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Femm permanent magnet



Elliptical integral based expression was developed for single turn circular coil [6]. Hello, I am looking to design an electromagnet with the greatest flux possible. Radial sintered ring magnet, a neodymium magnet manufactured, and its magnetic fields could be aligned in different directions then “normal” neodymium ring magnets. K. I am using this coil to repel a permanent magnet when pulsed. The force acting on the voice coil will be a Permanent magnet synchronous machines (PMSM) contain permanent magnets on the rotor, they are either placed on the surface or buried [1]. The distance between permanent magnet was optimum resulting in minimum magnetic flux leakage [16]. Remember, the permanent field from the pole piece magnetizes the string (only significantly when the pickup is present) over the pole piece. As you can see the topology of the permanent magnet is quite complicated so I would like to ask if there is a generic algorithm/way to design a motor lik29/05/2009 · It means we can’t draw the magnets and the coils and set a current frequency and get the corresponding torque – FEMM will ignore the permanent magnet’s fields and give us the torque from only the AC-induced field. Accurate digital simulation tools are necessary to evaluate their field performance particularly when they are driven with solid You can find study of this motor in program FEMM in this thesis. Gole, Senior Member, IEEE, T. I want to design a permanent motor in FEMM. As you can see the topology of the permanent magnet is quite complicated so I would like to ask if there is a generic algorithm/way to design a motor like this. The chosen geometry of the permanent magnet influences the magnetic flux distribution in the machine [12]. Assignment of boundary condition and current sources. Generator designs are conducted for rotor diameters between 2. Adds "incremental permeability" AC solver. In the proposed simulation, the torque permanent magnet of the rotor and the stator teeth. In some cases and when operating at high speeds the permannt magnets can be Attraction Magnetic Force Calculation of Axial Passive Magnetic Bearing Magnetization loop charges of lower permanent magnet bases are . Permanent Magnetic Motor, free permanent magnetic motor software downloads, Page 2. A second problem: In simulation process one really wants to move the PMs and back iron of the linear motor synchronously with the currents to get fmeaningful results, however, in FEMM software all AC solutions have a constant physical Equivalent Circuit Analysis of Interior Permanent Magnet Synchronous Motor Considering Magnetic saturation to magnetic saturation and lots of analysis methods are required. For this reason, it is presented in Figure 4. ,Limited supply Permanent Magnet Femm, Strong Magnet, Disc Magnets, Rare Earth Magnets, Neodymium Magnets, Permanent Magnet, Small Magnets, N52 Magnets. The opposing flux introduced by a permanent magnet will extend the saturation flux limit of a given magnetic material. I want to design a permanent motor in FEMM. A method of simulation and modeling outer rotor permanent magnet brushless DC (ORPMBLDC) motor under dynamic conditions using finite element method by FEMM 4. Debashis Chatterjee, 3 Prof. That is, the magnet is modeled as a chunk of low-permeability material. Magnet Material Definition. Kerapatann fluks yanng meliintasi kumpaaran yang m mengelilingi laminasi dianalisis addalah pada gigi g stator daan …Permanent Magnet Synchronous Machine Model for Real- Time Simulation A. The magnetic flux density of a magnet is also called "B field" or "magnetic induction". femm permanent magnetApr 10, 2012 The purpose of this example is to demonstrate how the material and direction of permanent magnets are defined in FEMM. For initial analysis the length of permanent magnet and electromagnet is taken as 20mm, the gap between But surely there's a force coming off a permanent magnet attracting it to iron. capabilities of used software - FEMM [4]. According to the continuity law of the eddy current density, 椛ゲ雑= 0, J may be . An open source software tool for modeling and designing AFPM generators in wind electric systems. Gieras, R. Each model is presented in figure 6 permanent magnet (RFIPM) generator by using a geometric modification on magnet poles and stator teeth. (a) Characteristic B H curve of hard magnetic material, (b) example of Neodymium-Iron-Boron PM including the variation of characteristic with the temperature. two permanent magnet motors will allow implementation of an electronic differential gear, which will improve the con-trollability of the kart. So, to minimize acoustic noise, we need to optimize this interaction. J. I have a small assy. 5(b). This a FEMM [4] model was prepared based on the Remanence Flux, Br, and Coercivity Hc In Figure 2-1 the hysteresis loop clearly shows the remanence flux density, Br. double-sided axial-flux permanent-magnet motor with non-slotted stator. Each current is de ned by its amplitude and sign. However, you can export the results from FEMM easily with a simple LUA script. Permanent magnet self demagnetisation Below are four magnets modelled in FEMM with a length of 1, 2, 4 and 8 mm Despite each magnet being made of the same material there is a clear difference in the flux density present at the surface poles. MANATEE can also call FEMM for the calculation of Permanent Magnet Synchronous Machine Model for Real- Time Simulation A. Brno University of Technology, Faculty of Electrical Engineering and Communication, 2013, 94 pp. 2. MODELING AND SIMULATION OF A PERMANENT MAGNET SYNCHRONOUS MOTOR FOR BRAKE-BY-WIRE TECHNOLOGY IN AUTOMOTIVE APPLICATIONS …25/08/2006 · find different arrangement to optimize the permanent magnet array or if you can give me any suggestion on the topics. A circle does not have a first and last magnet. FEMM 4. We consider nb bars for each permanent magnet. Adrian Jansen Guest. This paper deals with of inset permanent magnet synchronous motor with distributed winding on the stator. The flux paths vary according to several factors such as the armature reaction due to the load, the temperature [2], [3] etc. of the most widely used permanent magnet materials in the world. 4 The finite element method magnetics tool, FEMM 4. systems and typically utilize coreless axial flux permanent magnet (AFPM) generators. 2 software package is presented. coercive field strength. FEMM is a set programs on solve static and low frequency magnetic fields. One Bar Permanent Magnet Model The proposed model of the magnets consists of a magnetic polarization vector which varies according to its radius: M = μ 0M 0 rm r (1) With rm = ro−ri 2. From using FEMM software, I know that if the airgap is not meshed fine enough, the torque numbers will be inaccurate. You can find study of this motor in program FEMM in this thesis. II. However, ECA can not estimate The "source" of the PM's flux is a current sheet of density Hc*(m ×n) on the edges of the permanent magnet, where Hc is the magnet's coercivity, m is a unit vector in the direction of magnetization, and n is an outward unit normal to the edge of the PM. I would like to know if you know any books or FE Magnetic Field Analysis Simulation Models based Design, Development, Control and Testing of An Axial Flux Permanent Magnet Linear Oscillating Motor 1Govindaraj T, 2 Dr. Simple Algorithm for the Magnetic Field Computation in Bobbin Coil Arrangement V. 8 Conclusions. Maguire, Senior Member, IEEE Abstract--This paper presents the implementation of a model for a permanent magnet motor on a real time digital simulator. When using superconducting magnets, the levitation of a permanent magnet can even be stabilized by the small diamagnetism of water in human fingers. EVS24 International Battery Hybrid and Fuel Cell Electric Vehicle Symposium 1 EVS24 Stavanger, Norway, May 13-16, 2009 Equivalent Circuit Analysis of Interior Permanent MagnetFEMM is a powerful (and free) 2D magnetic, electrostatic, and heat transfer solver. For this particular  a Gapped EI-Core Inductor · Force of an Eight Pole Radial Magnetic Bearing in FEMM · Rotating Losses in a Outrunner Doubly Salient Permanent Magnet Apr 5, 2007 The calculation of the energy stored in a permanent magnet is, perhaps surprisingly, To establish how a permanent magnet normally operates, the . The "source" of the PM's flux is a current sheet of density Hc *( m × n) on the edges of the permanent magnet, Any one who worked with Finite Element Method Magnetic (FEMM) for the designing of the electrical machines ?? Currently I had measure the Magnetic field for Permanent magnet in terms of You use finite element analysis. In the proposed simulation, the torque developed at various positions of the rotor, under a complete cycle ofRadial Sintered Magnets Radially sintered magnets are the face of the future, powered by Magma. Figure 4: Permanent magnet geometry Two geometrical dimensions were imposed, with the Finite Element Method Magnetics (FEMM) is an open source finite element analysis software package for solving electromagnetic problems. An electromagnet is useful because it can be turned on and off easily (using an electric current), whereas a permanent magnet cannot be turned off and will continue to affect its immediate environment. Fu The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong A novel algorithm which minimizes the cogging torque of surface-mounted permanent magnet (SPM) brushless motors by Other way as iron core and coreless. 250" in length with a . 0 software was used. magnetic ant thermal situation for a permanent magnet synchronous machine. g. An example application for this functionality is the analysis of the frequency-dependent impedance of speaker drivers about the DC operating point established by the speaker's permanent magnet. A. Note that the magnitude of the B field …Gieras, R. Petar Milkov The model of permanent magnet in Femm can not be applied in eddy current calculation. When full biasing of the core is achieved, hysteresis losses in synchronous permanent magnet (PM) motors. Thanks in advance. As you can see the topology of the permanent magnet is quite complicated so I would like to ask if there is a generic algorithm/way to design a motor likCurrently I had measure the Magnetic field for Permanent magnet in terms of Magnetic Fled Vs Distance (197 mT at 5 mm) and for electromagnet in terms on Magnetic …Magnetic fields are solved using the program Finite Element Method Magnetics (FEMM) in of inset ferrite permanent magnets synchronous motor with distributed winding on the stator. In the proposed method, vector M&R Industry Co. Permanent magnet synchronous motor, Finite Element Method Magnetics (FEMM) shows the magnetic fields of inset permanent magnet synchronous motor with distributed winding on the stator in no-load condition, in loaded condition and in the condition armature reaction. Abudhahir3, R by cylindrical coil and the correlation between the cylindrical coil and axially magnetized permanent magnet of ring shape is achieved [4-5]. Magnetic Simulation and Analysis of Radial Flux Permanent Magnet Generator using Finite Element Method This paper discusses magnetic simulation and analysis of radial flux permanent magnet generator (PMG) using finite element method (FEM) by utilizing open source software FEMM 4. Energy is now computed in …KEYWORDS Permanent magnets, PM machine, Joule losses, eddy current losses, FEMM, ANSYS, ANSOFT, heat, CFD, fluid flow, radial fan, cooling. The program FEMM currently addresses linear corresponding force (or torque) – FEMM will ignore the permanent magnet’s fields and give us the torque that resulted only from the AC-induced field [4]. The OpenAFPM modeling tools can be used for designing Axial Flux Permanent Magnet (AFPM) generators for wind electric systems with the use of the open source finite element analysis software ‘Finite Element Method Magnetics’ (FEMM). This magnetic field is then directed and concentrated in the area where the voice coil is. Each model is presented in figure 6 The second topology showed better results for this purpose, with a magnetic flux in the stator coils 30% higher than thatDEEB, R. 2 01Nov2015. Energy in PMs was computed incorrectly in previous versions. (15), the attraction magnetic force between two ring permanent magnets can be obtained. A more complete thermal analysis of the motor would also help to determine the actual operating temperature of the machine, I am using FEMM to design a dc permanent magnet rotor. I would like to get the inductance for the coils connected in series and in parallel. URFACE-MOUNTED permanent magnet (SPM) motors with surface-mounted magnets are widely used in industry. STATOR MAGNET ROTOR CORE Fig. A more complete analysis could …It is necessary to calculate the magnetic field of the permanent magnet in the whole space. M 0 is the given magnetization value of permanent magnet. Apr 22, 2012 A method of simulation and modeling outer rotor permanent magnet brushless conditions using finite element method by FEMM 4. 100x. Join GitHub today. So I constructed a FEMM model according to Hohl's magnet dimensions and spacing, but I used fewer numbers of magnets in the array, simply to save space and solve time. With radial sintered rings, The magnetic flux density of a magnet is also called "B field" or "magnetic induction". There are many methods to reduce detrimental effect of cogging torque: stator or rotor skewing; additional notches in stator teeth and additional stator teeth [1]. The 2D (two dimensional) magnetic analysis of the motor is computed using FEMM (finite element method magnetics) program. Evolutionary Optimization of an Inexpensive Permanent Magnet Synchronous Wheel Motor FEMM [3] is a sufficiently complete FE design and simulation tool. Kamper, Axial Flux Permanent Magnet Brushless Machines (Kluwer Academic Publisher, 2008). FEMM is free. induction machines, surface, interior or inset permanent magnet synchronous machines, inner and outer rotor) Electrical machines automatically defined in FEMM by MANATEE. The commercial software used for analysis is FEMM. 0 Electromagnetic and Thermal Analysis of Permanent Magnet Synchronous Machines Nicola Bianchi, Massimo Barcaro and Silverio Bolognani Department of …Permanent magnet material applied to the PM servo motor M 718 belongs to the third type rare earth permanent magnet material NdFeB. Equivalent circuit analysis (ECA) is one of the design methods of IPMSM and it is generally used for characteristics analysis. The cogging torque is an inherent shortcoming in PM motors and it affects the machine starting performance, produces noise and results in mechanical vibration, thus it is necessary and important to reduce the cogging torque in PM motors [1]. B. This to revise what have already been done and This to revise what have already been done and to acquire a physical understanding of the problems associated with sensorless control. The vector control, also known as the field-oriented control (FOC), of a permanent magnet synchronous motor (PMSM) is the algorithm often used in today’s advanced motor control drives. Gopperundevi2, Dr. ANSYS is fine - the company ABSTRACT: The modern Permanent Magnet Linear Synchronous Motors (PMLSM) has a wide range of applications due to high efficiency, high thrust force density and high acceleration. The Spiral Magnetic Motor (SMM) is novel and unique since it has been proven to accelerate a permanent magnet rotor through 90% of its cycle with only permanent magnets, thus potentially providing a clean, inexhaustible source of constant torque for use as a motor or generator. The design was simulated via Finite Element Method Magnetics (F EMM) Software, for obtainment of design parameters. Even there is an easy way to find the coordinates when I want to change the dimensions of the machine or the number of poles the coordinates will change as well. DETERMINING STATIC TORQUE CHARACTERISTICS OF PERMANENT MAGNET STEP MOTOR FEMM value when total torque is calculated as the sum of individual torques. Using the ECA, we can calculate the characteristics quickly. 2m, applying a Particle Swarm Optimization (PSO) in the generator Optimization of Cylindrical Halbach Permanent Magnet Array Dimensions for Magnetic Refrigeration Mehmet H. FE Magnetic Field Analysis Simulation Models based Design, Development, Control and Testing of An Axial Flux Permanent Magnet Linear Oscillating Motor 1Govindaraj T, 2 Dr. In (b) rin is the inner radius of the machine stator, rout is the outer radius- and ls is the length of stator stack, respectively. Dehkordi, Student Member, IEEE, A Permanent Magnet Synchronous Motors (PMSMs) are increasing applied in several areas such as traction, automobiles, robotics and aerospace technology [1]. For low-frequency problems THE PROPAGATION OF ANNULAR IREBS IN PERIOD PERMANENT MAGNETIC (PPM Permanent magnet synchronous machines Brushless DC machines: FEMM: David Meeker, Ph. An example application for this functionality is the analysis of the frequency-dependent impedance of speaker drivers about the DC operating point established by the speaker's permanent magnet. (FEMM) 2-D simulation program. If things are done properly, this “current sheet” in the rotor will generate the same field as the PMs By default, FEMM takes the view that permanent magnets are essentially the same as solenoids. brushless dc motor for direct traction drive in an electric vehicle. A permanent magnet produces a B field in its core and in its external surroundings. The thesis evaluates the possibilities to use sensorless control for a Permanent Magnet Synchronous Machine (PMSM) used in a hybrid powertrain for heavy vehicles. This is the FEMM schematics ROTOR PERMANENT MAGNET BRUSHLESS DC Along these equations FEMM also uses a series of equations related to electric field Issue 1, Volume 1 (JANUARY 2012) www In this paper, the methodology for finite element (FE) design of RPMFS (Rotor Permanent Magnet Flux Switching) machines is presented. While it is limited to 2. ” Though there with FEMM also indicated that a transverse field was of higher density with the axial magnet Index Terms—Cogging torque, stator slot, permanent magnet generator, finite element analysis, FEMM I. The magnets are mounted on the surface of the motor core. This continuation brings you closer to detailed analysis and different electromagnet quantities such as flux density variation in different parts of the machine and the use of this information in machine analysis, Permanent magnets are widely used in MRI machines, portable electronic devices, hysteresis clutches, accelerometers, and also a critical element to permanent-magnet rotary and linear motors. e. A magnetic circuit created from a material with much greater magnetic permeability than air (usually low carbon steel) is used to achieve this. It is measured in tesla (SI unit) or gauss (10 000 gauss = 1 tesla). (because you have to go out past the ends of the stator, 5-10 times further than the stator array is long) The Effect of Adding a Steep Plate on a Permanent Magnet … B-Field Info for the Beakman’s Motor Project We have used two types of inexpensive ceramic magnets in this project, rings and disks. Using the Finite Element Method Magnetics (FEMM) shows the magnetic fields of inset permanent magnet synchronous motor with distributed winding on the stator in no-load condition, in loaded condition and in the condition armature reaction. Index Terms— back EMF, FEM, Line start permanent magnet motor, Multi-slice, Skew I. Abstract Different types of permanent magnet generators for wind power applica-tion have been subject of research during last two decades. If you want to model a class that is not in the library, you can build you own magnet model in the materials library. These scripts are meant to be used with …MODELING AND SIMULATION OF A PERMANENT MAGNET SYNCHRONOUS MOTOR FOR BRAKE-BY-WIRE TECHNOLOGY IN AUTOMOTIVE APPLICATIONS …For every magnetic simulation you will want to do there is a detailed working example online. We welcome you to join us in this path of creating a prosperous and efficient business together. find different arrangement to optimize the permanent magnet array or if One word, FEMM. URFACE-MOUNTED permanent magnet (SPM) motors with surface-mounted magnets are widely used in industry. However, FEMM can model a small disk magnet over a pole piece, and this is good enough to get an idea of the effect of the magnetized portion of the string. Radially sintered magnets are the face of the future, powered by Magma. This results that 2-pole machine has 6 slots, 4-pole 12 slots and so on. thank you very much luca Aug 23, 2006 #2. Hoping that some one who has access to the software can post a picture of the mesh around the two airgaps at each side of the center magnet ring. Wang, M. Finally, (2) is integrated on the yoke to obtain the hysteresis ANALYSIS OF MAGNETIC FIELD IN PM SERVOMOTOR ABSTRACT The paper presents design of the PM servomotor M 718, which is designed of a solid rotor with permanent magnets mounted at its surface. )A radial flux, surface mounted permanent magnet BLDC motor was designed with 33 slots and 10 poles and the analysis was carried out using finite element method in COMSOL Multiphysics. The preliminary design had 16 rotor poles, for high torque density and stable rotation at low speed. In this the-of permanent magnet synchronous machines. As you can see the topology of the permanent magnet is quite complicated so I would like to ask if there is a generic algorithm/way to design a motor lik They are 5 mm apart in the device. 2D model of servomotor is created using This contribution is effective to evaluate more realistic magnetic parameters, where measurements of a high-speed permanent-magnet generator prototype indicate saturation in the retaining sleeve due to pole-to-pole leakage flux. M. Magnetic fields are solved using the program Finite Element Method Magnetics (FEMM) in of inset ferrite permanent magnets synchronous motor with distributed winding on the stator. There's software packages out there that will do it for you. and coenergy expressions implemented in the FEMM magnetics solver. efficiency, along with the FEMM Finite Element Analysis Design of Axial Flux Permanent Magnet Generators Using Various Magnetic Materials in Locally Manufactured Small Wind Turbines Kostas Latoufis, Member, IEEE, Katerina Troullaki, Thomas Pazios and Nikos Hatziargyriou, Fellow, IEEE L Optimization of Permanent Magnet Surface Shapes of Electric Motors for Minimization of Cogging Torque Using FEM Ningning Chen, S. PMSG permanent-magnet synchronous generator rpm revolutions per minute The 5-MW SCIG in FEMM showing the finite-element mesh (a), magnetic flux density computed for ring shaped permanent magnet. 2 software capabilities of used software - FEMM [4]. This simulation applies , for example, to a synchronous generator that is rotating with the stator windings open (in that case, no magnetic field is generated by the stator since no current is flowing through those windings). The motor design is broadly explained in section III. Abstract— This paper is proposed a free energy magnet motor to study the feasibility of the magnet motor that replaced electric coils by permanent magnets which do not depend on the source of energy to generate movement. PM attraction/repulsion type linear motor is shown in Figure 1, from which it follows that the motor is a controlled magnet system and has a variable axial airgap. Finite element method magnetic (FEMM) are used for computation of the torque ripple. 6 Why is H pointing the wrong way inside my permanent magnet? By default, FEMM takes the view that permanent magnets are essentially the same as solenoids. how to calculate the magnetic force between a permanent magnet and a magnetic field? femm. Ashoke K. Simulation is performed on FEMM 4. Structure of the permanent magnet synchronous machine [3] The stator carries a three-phase winding, which produces a near sinusoidal distribution of magneto motive force based on the value of the stator current. An example has been presented in which FEMM is used compute the core, magnet, winding losses of a permanent magnet motor under load. Magnetic fields are solved using the program Finite Element Method Magnetics (FEMM) in of inset ferrite permanent magnets synchronous motor with distributed winding on the stator. com/imagesSee more images of femm permanent magnetRotating Losses in a Surface Mount Permanent Magnet Motorwww. MANATEE can also call FEMM for the calculation of Innovative technology, tools and schematics for more reliable, precise, efficient and longer lasting motor drive and control systems. Each model is presented in figure 6 The second topology showed better results for this purpose, with a magnetic flux in the stator coils 30% higher than thatFinite Element Method Magnetics (FEMM) is an open source finite element analysis software package for solving electromagnetic problems. This paper describes the separation of synchronous motors and rotor configurations. In the proposed simulation, the torque developed at various positions of the rotor, under a complete cycle of excitation of the stator, is analysed. In some cases where the driving speed is inherently low, such as energy EMS can compute transient and steady state torque profiles for various electrical machine topologies such as Permanent magnet AC machine, BLDC, Switched Reluctance, Induction etc. Modelling of Permanent Magnets Track in the Finite. D. Model of equivalent magnetic circuit and magnetic flux density are part of this work. Optimization of Permanent Magnet Surface Shapes of Electric Motors for Minimization of Cogging Torque Using FEM Ningning Chen, S. Ferrite Ferrite Magnets/Ceramic Magnets Datasheet A world leader in magnetic technology. 5. Recently, the Finite Element Method Magnetics (FEMM) is an open source finite element analysis software package for solving electromagnetic problems. MRI body scanners have large permanent magnets with a yoke of soft magnetic material to prevent self demagnetising fields that would reduce the field in the gap of the scanner. 0 scripting language were used to investi- Most permanent magnet devices will use soft magnetic materials to channel flux lines or provide a return path for magnetic fields, e. These produce a constant rotor magnetic flux. 05 is taken. The package includes four linked components: Geometer (build 3D structures in an interactive environment), MetaMesh (automatically create conformal hexahedron meshes), MagWinder (build complex 3D drive coil assemblies), Simulation Software for a Permanent Magnet Alternator Design Feb 24, But I saw some youtube video of motor simulation in femm with rotor movement and all. FEMM has a selection of built-in NdFeB materials, but the materials library is not comprehensive. For more than one rotor disc topology, each rotor disc was arranged face to face with the position of attracting each other. 1 Schematics of current model Here Neodymium magnet (NdFeB) with and coercivity of 155319 sqrt (42) and permeability of 1. The program addresses 2D planar and 3D axisymmetric linear and nonlinear harmonic low frequency magnetic and magnetostatic …PME’09 – 2009 ISEL\DEEA\SME papers on Electrical Machines Design Evolutionary Optimization of an Inexpensive Permanent Magnet Synchronous Wheel Motor0 Electromagnetic and Thermal Analysis of Permanent Magnet Synchronous Machines Nicola Bianchi, Massimo Barcaro and Silverio Bolognani Department of …magnetic ant thermal situation for a permanent magnet synchronous machine. The "source" of the PM's flux is a current sheet of density H c *( m × n ) on the edges of the permanent magnet, where H c is the magnet's coercivity, m is a unit vector in the direction of magnetization, and n is an outward unit normal to the …I am using FEMM to design a dc permanent magnet rotor. Finite Element Method Magnetics (FEMM) is an open source finite element analysis software package for solving electromagnetic problems. The problem for The Permanent Magnet Synchronous Motor block models a permanent magnet synchronous motor with a three-phase wye-wound stator. ― This three-phase machine has according to a design choice 1 slot per pole and phase. KURAL1, Serdar CELIK2, dimensional ratios of a HCPMA on the cooling performance of the magnetic refrigerator, FEMM (Finite Element Method Magnetics) 4. Thus, what I am trying to do is to create an algorithm in LUA scripting that designs a permanent motor for a different number of poles/dimensions. These programs usually solve problems in two dimensional and axial symmetrical environment. induction machines, surface, interior or inset permanent magnet synchronous machines, inner and outer rotor) Electrical machines automatically defined in FEMM by MANATEEabstract asko parviainen design of axial-flux permanent-magnet low-speed machines and performance comparison between radial-flux and axial-fluxA method of simulation and modeling outer rotor permanent magnet brushless DC (ORPMBLDC) motor under dynamic conditions using finite element method by FEMM 4. 56 A is applied to the servo motor armature winding. FEMM : Permanent magnet motor design. The field structure for such a magnet can be easily found using FEMM and a few simple Index Terms—Brushless machine, permanent magnet (PM), permanent magnet (PM) AND -AXIS INDUCTANCES OF PM BRUSHLESS ac MACHINES ACCOUNTING FOR SKEW 3941 I have an axisymetric magnetics problem in FEMM 4. I am currently using a Si-Fe laminated core of about . I am trying to calculate the EMF that is induced to the rotor. Usually, the induction field is generated using a constant current (or permanent magnets). You use finite element analysis. In English 中文内容 日本語表示 auf Deutsch 한국어 TI Home > Applications > Industrial > Motor drives Usually, on other TRACK perpetual motion machines, the field to get the unidirectional force is set up without the MOVING MAGNET inside, so when they put the MOVING MAGNET inside, it changes the flux lines, and no unidirectional force is extracted. You can consider one side as S and another as N. The analytical method was using in the design process. Due to reports of neodymium magnet corrosion, the performance of coreless AFPM generators is investigated with the use of both neodymium and ferrite magnetic materials. SPECIAL FUNCTIONS The special functions used in the paper are given below (1) A permanent magnet can be stably suspended by various configurations of strong permanent magnets and strong diamagnets. Different machine configurations are investigated to see if changes can be made facilitating the position detection. Incidently, this is the way a lot of permanent magnet solvers work, and in particular, is how FEMM works (see Item 6 in their faq . There is also information about core losses. For this particular  a Gapped EI-Core Inductor · Force of an Eight Pole Radial Magnetic Bearing in FEMM · Rotating Losses in a Outrunner Doubly Salient Permanent Magnet 28 Feb 2007 The purpose of this note is to present a low-order dynamic model of the magnetic force on strong rare-earth permanent magnets including 10 Jan 201410 Jan 201413 Apr 2014In a recent conference presentation, the convergence of FEMM was Then, capacitive and mechanical analogies to a permanent magnet will be considered. i haven’t done a FEMM analysis Equivalent Circuit Analysis of Interior Permanent Magnet Synchronous Motor Considering Magnetic saturation Jae-Woo Jung 1 , Jeong-Jong Lee 1 , Soon-O Kwon 1 , Jung-Pyo Hong 1 , Senior Member, IEEE FEMM 4. You can simulate multiphysic problems quite generally, magnetics are only a …If you are new to the topic of building Permanent Magnet Alternators, then this is for you! My purpose is to help people learn about the DIY wind turbines that are gaining in popularity. Welcome to an adventure of magnetic In order to cause a reversing motion of the plunger when the voltage is reversed, the solenoid will have 2 stator poles with the plunger between them and a strong permanent magnet whose field is aided at one air gap and opposed at the other by means of the coil field. element analysis (FEA) softwares to validate a radial flux permanent magnet synchronous motor (RF-PMSM) suitable for electric vehicle (EV) drive. INTRODUCTION Permanent magnet synchronous generators (PMSG) are widely used in alternative energy generation. Using injection of the third harmonic component in the Fig. Robert Baer Guest. Magnetization curves In dynamic loudspeakers the constant magnetic field is generated with either a permanent magnet or a field coil. 5/10/2007 · However, FEMM can model a small disk magnet over a pole piece, and this is good enough to get an idea of the effect of the magnetized portion of the string. HALL PROBE MEASUREMENTS OF 80 UNIT CELL MAGNETS FOR THE strong permanent magnet as the source for the field. info) •Model permanent magnet generators with NdFeB and ferrite magnets (with the same airgap flux density). Using the Finite Element Method Magnetics (FEMM) shows the magnetic fields of inset permanent magnet synchronous motor with distributed You might consider looking at FEMM. com/youtube?q=femm+permanent+magnet&v=tCEGpLLceIs Jan 10, 2014 The purpose of this example is to demonstrate how the material and direction of a permanent magnet are defined in FEMM. Its high torque-density was the parameter of concern. A rectangular magnet in a permanent magnet machine with eddy current field excited by 2D magnetic field 繕× 雑= 時傘 鯨掴 = 伐 項稽掴 項建, 鯨槻 = 伐 項稽槻 項建, 鯨佃 = 伐 項稽佃 項建 (1) where σ is the conductivity of magnets. Use only the sketch (Matlab figure 1) to observe that the geometry is fine before executing Femm from Matlab The magnetic lines of force passes from one flat side of circular magnet to another. Simplified analytical Calculation and evaluation of the magnetic field air gap in permanent magnet synchronous machine In this paper we will determine and evaluate the air gap field in a permanent magnet synchronous machine (PMSM) using finite element method (FEM). Methods of Magnetizing Permanent Magnets 1. Element Analysis of Linear Synchronous Motor. The bound current only has support on the surface, so we treat the permanent magnet like a soft iron core surrounded by a surface current of value $-H_c \hat {n}\times \hat{m}$. The maximum value of the magnetic flux density is about 1. Thermal calculations of permanent magnet motors in high current technology. Suresh1, V. If you find it useful, you can upgrade to full 3d tools. You should model the permanent magnets with ampèrian currents if By default, FEMM takes the view that permanent magnets are essentially the same as solenoids. I'm analyzing a loudspeaker motor (permanent magnet included) with many coils. Flux linkage is the flux multiplied by the number of winding turns. Hall sensors were used for getting the position of the rotor for proper energisation of the stator winding. net/p/femm/wiki/ReadMeThis makes it possible to do other things while FEMM is running a long drivers about the DC operating point established by the speaker's permanent magnet. Permanent magnet flux linkage, PM(id,iq) Matrix of the permanent magnet flux linkages with respect to current, defined as a function of d-axis and q-axis current vectors. femm. handling of many electric machines topologies (e. GitHub is home to over 31 million developers working together to host and review code, manage projects, and build software together. If you are new to the topic of building Permanent Magnet Alternators, then this is for you! My purpose is to help people learn about the DIY wind turbines that are gaining in popularity. I'm analyzing a loudspeaker motor (permanent magnet included) with many coils. )So I constructed a FEMM model according to Hohl's magnet dimensions and spacing, but I used fewer numbers of magnets in the array, simply to save space and solve time. Can anyone provide me with the equation of magnetic force between the permanent magnet and a magnetic field? Also kindly attach the reference journal link. Key Advantages of NdFeB Neodymium magnets are the most powerful commercially produced magnets. KLÍČOVÁ SLOVAJoin GitHub today. FEMM 4. 2. Design and simulation of an axial flux permanent magnet generator (AFPMG) have been described in this paper. Author: Shalyrajsinh JadejaViews: 59KImages of femm permanent magnet bing. At first a numerical calculation of the magnetic field distribution is applied. For explanation Google Sketchup is used & for recording video,  Finite Element Method Magnetics / Wiki / ReadMe - SourceForge sourceforge. flux air-cored permanent magnet generator designs, the type of generators which are typically found FEMM [4] model to verify the calculated results. ask. The two softwares presented are FEMM and OPERA. For this particular  FEMM Permanent Magnet Example - YouTube www. Overcoming FEMM limitations. The design considerations presented in this paper are rotor eccentricity, short circuit current estimation, voltage reflection at generator terminals due to high frequency switching and forces during magnet assembly. com/youtube?q=femm+permanent+magnet&v=SCqy4iH5YOU Apr 13, 2014 Magnetic field distribution using FEMM 4. Magnetic field from a permanent magnet Post by Minerva » Wed Mar 01, 2017 5:00 am UTC Consider a small cylindrical neodymium permanent magnet, suppose it is say 5mm diameter and 5mm high for the sake of example. luca said: Hi all, I am looking to arrange different permanent magnets with the purpose of increasingthe the mangetic flux and if possible localize it in specific area. FEMM contains a nice GUI for defining and analyzing the problem. Ganguli Abstract- Development, finite element(FE) analysis of magnetic field distribution, performance, control and testing of a new axial flux permanent magnet linear oscillating karaakteristik maagnetnya haanya apabilaa dikenai Dalam makalah m inii analisis medan m magnet gayaa magnet misalnya m m medan magn net yang akan dilakuukan secaraa numerik menggunaka m an dihaasilkan oleh magnet m permmanen atau arus a yang software FEMM F 4. One such software package – MagNet 2D/3D – is a powerful simulation software which engineers and scientists worldwide use for the design of motors, sensors, transformers, actuators, solenoids, or any component with permanent magnets or coils. Ho and W. The remanence flux is the polarized flux remaining in the core after the excitation has been removed. Tough, the reluctance in the permanent magnet-given space is not constant, because of the insertion of a portion of air during the rotation of the system. (because you have to go out past the ends of the stator, 5-10 times further than the stator array is long)The study of axial flux permanent magnet machine (AFPMM) has been increasingly interesting to develop, since its construction is simple, easy to make, cheap, and portable. Jan 10, 2014 The purpose of this example is to demonstrate how the material and direction of permanent magnets are defined in FEMM. 1. 8/09/2017 · I have an axisymetric magnetics problem in FEMM 4. . Changed the way that stored energy is computed for permanent magnet materials. The obtained expressions involve elliptic integrals and heumann lambda function. 4 and 4. 2T and Hc = 868000 A/m. To obtain a noiseless operation of the converter and motors, the pulse-width modulation switch-ing frequency is supposed to be higher than 20kHz. We found The Spiral Magnetic Motor (SMM) is novel and unique since it has been proven to accelerate a permanent magnet rotor through 90% of its cycle with only permanent magnets, thus potentially providing a clean, inexhaustible source of constant torque for use as a motor or generator. For this particular  Femm Magnetostatics - YouTube www. Free: Scriptable software for magnetics, electrostatics, heat flow, and current properties as that of permanent magnet. Cogging-torque can be reduced by changing …Abstract— This paper is proposed a free energy magnet motor to study the feasibility of the magnet motor that replaced electric coils by permanent magnets which do not depend on the source of energy to generate movement. In order to ensure normal operation and maximum thrust force density, the thermal performance must be done in the design stage. reduction of permanent magnet synchronous motor Magnetics-FEMM [3]. The most common used magnetic material for motors are sintered NdFeB magnets and SmCo magnets. . Dr. Principle of Oscillating Motion. (FEMM). EXPERIMENTAL INVESTIGATION AND OPTIMIZA-TION OF PERMANENT MAGNET MOTOR BASED ON (FEMM) and the other obtained by our of the permanent magnet are deflned by a The magnet system in the mover is equipped with permanent DEVELOPMENT OF A BENDABLE PERMANENT-MAGNET TUBULAR LINEAR MOTOR We used the program FEMM 4. The design, simulation, and testing of an AFPM wheel motor have been presented. Currently I had measure the Magnetic field for Permanent magnet in terms of Magnetic Fled Vs Distance (197 mT at 5 mm) and for electromagnet in terms on Magnetic Field Vs Voltage (134 mT for 12V at contact). Hence, Ɍ is not a constant, but it depends by time. specified surface mounted permanent magnet synchronous machine (SPMSM). Fig. 5d geometries (the magnets and fields need to have either axial symmetry or be planar), it offers an easy to use interface to explore such problems. Since each coil has a different position, the induced emf will be different. Join GitHub today. Design of a Permanent-Magnet Synchronous Machine with Non-Overlapping Finite Element Method Magnetics (FEMM Permanent Magnets (PM) are studied The magnetic flux density of a magnet is also called "B field" or "magnetic induction". It was designed using the single rotor – single stator construction. Torque results for different rotor RPMs and winding currents determine the optimal operating conditions. M&R Industry Co. A magnet having a preferred direction of magnetic orientation, so that the magnetic characteristics are optimum in one preferred direction. 2 (an open source software). The program addresses 2D planar and 3D axisymmetric linear and nonlinear harmonic low frequency magnetic and magnetostatic problems and linear electrostatic problems. Further accurate strengths can be calculated using FEMM analysis. Permanent Magnet Linear Oscillating Motor (PMLOM) 2. There are lines going from the top magnet to the bottom magnet on each side. 2 for sim- Software is FEMM (www. Such advanced motor control algorithms require the setting of motor electrical parameters for its proper functionality. The figure shows the equivalent electrical circuit for the stator windings. Abstract: This article describes an adjustment of a permanent magnet direct-current motor. induction machines, surface, interior or inset permanent magnet synchronous machines, inner and outer rotor) Electrical machines automatically defined in FEMM by MANATEEmagnet strength may be done based on the performance of the entire device, rather than that of the magnet alone, thus removing an entire range of variables. What is the equation for that? FEMM is free, but 2D. 2 01Nov2015. 3 presents the distribution of the magnetic flux density along a cross-section of the servo motor. “Brushless and Permanent Magnet Free Wound Field Synchronous Motors for EV Traction” Prof. The effect of the air gap variation on the characteristic and performances of single rotor - single stator AFPMG has been described in this paper. surface magnet [1, 399p]. permanent magnets (M718 I servo motor produced by VUES company). Developing a 3D-FEM Model for Electromagnetic Analysis of an Axial Flux Permanent Magnet Machine 259 This accurate model can be used for design process and sensitivity analysis. These calculations are achieved using dedicated software based on numerical methods of finite elements (FEM) and finite volumes (FVM). The factors affecting the design and its considerations can be seen in section II. These motors can be with iron core or with self-supporting iron core less type rotor. Fu The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong A novel algorithm which minimizes the cogging torque of surface-mounted permanent magnet (SPM) brushless motors by Definitions for the magnet width wPM, for the pole pitch τp, for the permanent thickness lPM, for the stator yoke thickness ly and for the physical length of air-gap g. We are interested in employing 4 poles permanent magnet in brushed DC type of motors. Diamagnetic levitation 2. 2 2 m 2 2 , i 1,2 ,, N N d c Q i M r. Presence of permanent magnets gives magnetic field for free but there are many design considerations which must be taken into account for a good design. Free: Scriptable software for magnetics, electrostatics, heat flow, and current A magnet having a preferred direction of magnetic orientation, so that the magnetic characteristics are optimum in one preferred direction. The electromagnetic FEMM . Different alloys act differently. Iron stops being an electromagnet very quickly, but steel takes time to wear off. The idea was to read flux lines that flowed directly from one surface magnet to another and from the magnet surface to the rotor surface. Kerapatann fluks yanng meliintasi kumpaaran yang m mengelilingi laminasi dianalisis addalah pada gigi g stator daan …Magnetic forces in an air-gap of conventional electrical machine cause magnetic attraction and tensile forces between the bodies i. INTRODUCTION HE line-start permanent magnet motor (LSPM) has an attractive advantage over an induction motor in that an LSPM guarantees very high efficiency and has self-starting ability without any power electronic devices. This adjustment has been done in order to reduce manufacturing costs due to …Simple Algorithm for the Magnetic Field Computation in Bobbin Coil Arrangement V. (19) Using results for interaction magnetic force between two circular loops, Eqs. RESEARCH OF PERMANENT MAGNET GENERATOR WITH COMPENSATED REACTANCE WINDINGS ABSTRACT In this article, a patented “bifilar” coil (BC) type permanent magnet generator (PMG) is constructed for scientific research and comparison with other technologies. Leakage calculation is very complicated with a manual method and therefore the finite element method in the FEMM model was used. Index Terms-Axial flux machine, finite element analysis, microcontroller based IGBT inverter, permanent magnet linear oscillating motor, rare earth permanent magnet. The cogging torque obtained is less than 1% of the actual torque due to the fractional slot pitch software, FEMM . Any suggestions will be highly appreciated. This magnetic field will depend on the shape of the magnet, its size . Introduction two hundred years, we have found out that electricity and mag netism are related, and most of the time Neodymium (NdFeB) MAGNETS Neodymium permanent magnets (Nd-Fe-B) are composed of neodymium, iron, boron and a few transition metals. It does not contain an option for exporting the results. In order to determinate the characteristics requirements, a simple vehicle dynamics M Electromagnetic and Thermal Analysis of Permanent Magnet Synchronous Machines 3 (a) (b) Fig. We basically replace the original design of the permanent magnets in the rotor with an “equivalent alternating field source” that emulates the moving field of the magnets at the desired speed. the permanent magnet “magnetic gradient force. info/wiki/SPMLossAn example has been presented in which FEMM is used compute the core, magnet, winding losses of a permanent magnet motor under load. Closed Circuit: This exists when the flux path external to a permanent magnet is confined within high permeability materials that compose the magnet circuit. Radial Sintered Magnets Radially sintered magnets are the face of the future, powered by Magma. 2 software package is presented. Halbach array permanent magnet arrays are special magnet designs which can produce strong magnetic field in one. Abstract: A method of simulation and modeling outer exterior permanent magnet brushless DC motor under dynamic conditions using finite element method by FEMM 4. side of the array while a weaker magnetic field in the other region. For a single, isolated magnet 25mm in diameter and 4mm thick, the field structure looks like the figure below from FEMM. Dan Ludois – Principle Investigator University of Wisconsin - Madison June 9th, 2015 This presentation does not contain any proprietary, confidential, or otherwise restricted information . and to assign such a generator to the corresponding slot, as shown in Fig. VERTICAL AXIS WIND TURBINE DRIVETRAINS Modelled the generator in a Finite Element Analysis program FEMM by constructing different “Permanent Magnet Machines The permanent magnet material used for this application is a NdFeB with Br = 1. Let's say that I have 2 coils, coil A (n=N1) and B (n=N2) with circuits A (I=1A) and B (I=1A). Terry said: look harder. Finite Element Method Magnetics (FEMM) shows the magnetic fields of inset permanent magnet synchronous motor with distributed winding on the stator in no-load condition, in loaded condition and in the condition Permanent magnet on rotor disc was arranged in such a way to make position of N-S-N-S and so on. Project ID: EDT065 The axial flux permanent magnet generator (AFPMG) has been widely used especially for electricity generation. By default, FEMM takes the view that permanent magnets are essentially the same as solenoids. By default, FEMM takes the view that permanent magnets are essentially the same as solenoids. In the proposed method, vector magnetic ant thermal situation for a permanent magnet synchronous machine. The applied permanent magnet material belongs to the rare earth class NdFeB. The prototype motor is a double-sided axial-flux permanent-magnet motor with non-slotted stator. • NdFeB magnets have a higher maximum energy product, (B ·H) max. MagNet 2D/3D is a powerful simulation software which engineers and scientists worldwide use for the design of motors, sensors, transformers, actuators, solenoids …M&R Industry Co. N. g. The classic design of magnetic rotors, for example, is being made by placing arc segments magnets on a ring, while each segment is magnetically aligned (north or south) in the opposite direction to the next magnet. Hereby, it ishandling of many electric machines topologies (e. between permanent magnets and iron parts. Permanent magnet synchronous machines Brushless DC machines: FEMM: David Meeker, Ph. 2mm (x 116 degrees) x 40mm L - Neodymium Magnet 2 magnets 1 magnet with North Pole on outer diameter and 1 magnet with South Pole on outer diameter To calculate the force of a one-sided magnet, you can use COMSOL Multiphysics and the AC/DC Module. info/wiki/HomePage. Introductionloudspeaker magnetic circuit design by simulating various geometries and parameter sets and choosing the best result. The features, working principle and elements of the BCPMG are analyzed. Accurate digital simulation tools are necessary to evaluate their field performance particularly when they are driven with solid The simplest procedure for attraction magnetic force determination is to discretize each bases of permanent magnets into system of circular loops, where N 1 is the number of discretized segments of each bases of upper permanent magnet and N 2 is the number of discretized segments of each bases of lower permanent magnet. Based on the proposed methodology, a program is developed using the Octave FEMM (Finite Element Method Magnetics) toolbox. 2 version [10]. As shown in fig 1, Brushed PMM cross section with conventional field wound motors. The calculated values are compared with the simulated result. The interaction between the magnetic field produced by the stator winding and the magnetic field produced by the permanent magnets can be shown clearly. The program handles saturation effects in ferromagnetic materials and modern permanent-magnet materials (NdFeB and SmCo). Finite Element Method using COMSOL Multiphysics is used as the analysis tool. DETERMINING STATIC TORQUE CHARACTERISTICS OF PERMANENT MAGNET STEP MOTOR (magnetic circuit solved by means of FEMM method with all exciting currents) and the Permanent Magnetic Motor, free permanent magnetic motor software downloads, Page 2. that is basically a housing for the magnet with a hole to guide what is being magnetized. That is, the magnet is modeled as a chunk of low-permeability Permanent Magnet Example Introduction The purpose of this example is to demonstrate how the material and direction of permanent magnets are defined in FEMM. 3. A more complete analysis could also consider windage and bearing losses. 54 Responses to Perendev style Magnetic Motor “Free Energy I have been experimenting on permanent magnet motors for years. Based on FEMM software, in this paper Permanent magnet biasing, is a known technique for increasing the energy storage capability of inductors operating in DC applications. It can be achieved by Permanent Magnet Synchronous Machine Model for Real- Time Simulation A. Calculation and evaluation of the magnetic field air gap in permanent magnet synchronous machine case of permanent magnet machines the problem FEMM software 1 Introduction. femm. The magnetic analysis is performed for the case of nominal current I n = 11. The program FEMM currently addresses linear handling of many electric machines topologies (e. 1: Distribution of both magnetic flux density and lines inside the M 718 I servo motor. 5d geometries (the magnets Electromagnetic and Thermal Analysis of Permanent Magnet Synchronous Machines 5 (a) Boundary condition (b) Current assignment Fig. 100 cross sectional area. It is called MagnetFabrik. Most recently, we have almost exclusively used disks. Then a harmonic analysis of the air gap flux density waveform is The bound current only has support on the surface, so we treat the permanent magnet like a soft iron core surrounded by a surface current of value $-H_c \hat {n}\times \hat{m}$. This is done, for example, with some magnet ic …. femm permanent magnet MANATEE can also call FEMM for the calculation of Magnetic fields are solved using the program Finite Element Method Magnetics (FEMM) in of inset ferrite permanent magnets synchronous motor with distributed winding on the stator. Let's say that I have 2 coils, coil A (n=N1) and B (n=N2) with circuits A (I=1AFEM Based Simulation of a Permanent Magnet Synchronous Motor Performance Characteristics Abstract: The paper deals with simulation and analysis of both steady state and dynamic performance characteristics of a synchronous motor with surface mounted permanent magnets. The purpose of this example is to demonstrate how the material and direction of a permanent magnet are defined in FEMM. 2D magnetic analysis is computed using FEMM software. A really simple and easy to use tool is called FEMM: femm. I am working with very limited power as well as overall volume the coil can occupy. The finite element magnet method (FEMM) was used to study the PPM. This will not happen when we arrange the magnets in a circle. One-Sided Permanent Magnets Chances are, you have some magnets on your refrigerator at home or on the whiteboard in your office. software, FEMM . was to build a permanent magnet linear synchronous generator prototype for wave energy conversion. For different external radii, average magnetic fields inside the cylinder were calculated. phase, radial-flux, surface mounted permanent magnet BLDC motor was selected for the analysis due to its wide scope applications. 9 T. i = − = π . Petar Milkov 10 Apr 2012 The purpose of this example is to demonstrate how the material and direction of permanent magnets are defined in FEMM. Dehkordi, Student Member, IEEE, A. It is Calculation and evaluation of the magnetic field air gap in permanent magnet synchronous machine case of permanent magnet machines the problem FEMM software So, it is important to have specific permanent magnet designs which can produce higher magnetic field. Tim Aug 25, 2006 #6. This software performs a quasi-two dimensional calculation of the magnetic field in the motor. Vladimir Aubrecht. If we look closely at the middle magnet, we can see what will happen inside the circle. These magnets are extremely strong for their small size, metallic in appearance and found in simple shapes such as rings, blocks and discs. Not every possible magnet material model is pre-defined in FEMM. L. The simplest procedure for attraction magnetic force determination is to discretize each bases of permanent magnets into system of circular loops, where N 1 is the number of discretized segments of each bases of upper permanent magnet and N 2 is the number of discretized segments of each bases of lower permanent magnet. permanent magnet. In permanent magnet (PM) motors, the cogging torque is caused by the interaction between the PM field and the stator slotting. info/wiki/HomePage. Don't Neodymium Arc Magnets 25mm x 20. aluminium mover embedded with rare earth permanent magnet experimentally and analytically through FEMM software and develop a microcontroller based IGBT Inverter for its control. 11/01/2014 · The purpose of this example is to demonstrate how the material and direction of a permanent magnet are defined in FEMM. Supervisor: Prof. We proposed four model of RFIPM generator with stator teeth notch and edge-rounded magnet (ERM) poles. 2, and LUA 4. Equivalent Circuit Analysis of Interior Permanent Magnet Synchronous Motor Considering Magnetic saturation Jae-Woo Jung 1 , Jeong-Jong Lee 1 , Soon-O Kwon 1 , Jung-Pyo Hong 1 , Senior Member, IEEE The prototype motor is a double-sided axial-flux permanent-magnet motor with non-slotted stator