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Three-dimensional Analytical Modeling of axial flux Permanent Magnets Maglev Motor

CES Transactions on Electrical Machines and Systems 2022年第4期6卷 438-444页

作者： Wei Qin Gang Lv Yuhua Ma IEEE the School of Electrical Engineering BeijingJiao Tong UniversityBeijing 100044China the Taiyuan Institute of China Coal Technology and Engineering Group Taiyuan 030006China

The three-dimensional(3D)analytical model of the magnetic field in an axial flux Permanent Magnets Maglev Motor(AFPMMM)is proposed and investigated the influence of the structural parameters on electromagnetic ***,the topology and working principle of the AFPMMM is introduced,and the model is transferred into a mathematical model in 3D cartesian ***,the volume integral method and equivalent current sheets model is applied to find the 3D magnetic field distribution function of Halbach rotor.A unified form expression can be obtained by two dimensional discrete fourier transform(2-D DFT)is applied on the 3D magnetic field distribution ***,the conductive and nonconductive regions of AFPMMM will be formulated by the second order vector potential(SOVP)to built the 3D analytic *** expression of the lift force,torque and power losses was ***,the relationship between electromagnetic characteristics and structural parameters of the AFPMMM were analyzed based on 3D analytic model and validated using the 3D finite element analysis(FEA).Finally,the experiments based on a small scale prototype are carried out to verify the analytical results.

关键词： axial flux Permanent magnet machines Maglev Analytical model Electromagnetic performance

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Design Optimization of axial flux Permanent Magnet (AFPM) Synchronous Machine Using 3D FEM Analysis

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Journal of Electromagnetic Analysis and Applications 2016年第11期8卷 247-260页

作者： Joya C. Kappatou Georgios D. Zalokostas Dimitrios A. Spyratos Electrical and Computer Engineering Department University of Patras Patras Greece

This paper deals with the investigation of the behavior of a low speed, dual rotor-single coreless stator, axial flux permanent magnet synchronous machine for small power applications. Firstly, with the use of nonlinear 3D FEM electromagnetic analysis, four models with different magnet topologies are designed, simulated and compared. With criteria such as output power, power factor and torque ripple, the best performing model is selected and a further investigation, regarding the effect of the disk rotor material on the behavior of the machine, is conducted. The simulation results show how the different types of commercially available steel types affect the magnetic field and the performance of the machine.

关键词： axial flux Permanent Magnet Magnet Topology Synchronous Generator

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Multi-layer Quasi Three-dimensional Equivalent Model of axial-flux Permanent Magnet Synchronous Machine

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CES Transactions on Electrical Machines and Systems 2021年第1期5卷 3-12页

作者： Mingjie He Weiye Li Jun Peng Jiangtao Yang CRRC Zhuzhou Institute CO. LTD.ZhuzhouChina College of Electrical and Information Engineering Hunan UniversityChangshaChina

axial-flux permanent magnet synchronous machine(AFPMSM)enjoys the merits of high torque density and high efficiency,which make it one good candidate in the direct-drive *** AFPMSM is usually analyzed based on the three-dimensional finite element method(3D FEM)due to its three-dimensional magnetic field ***,the 3D FEM suffers large amount of calculation,time-consuming and is not suitable for the optimization of *** this issue,a multi-layer quasi three-dimensional equivalent model of the AFPMSM is investigated in this paper,which could take the end leakage into ***,the multi-layer quasi three-dimensional equivalent model of the AFPMSM with single stator and single rotor is derived in details,including the equivalent processes and conversions of structure dimensions,motion conditions and electromagnetic ***,to consider the influence of end leakage on the performance,a correction factor is introduced in the multi-layer quasi three-dimensional equivalent ***,the proposed multi-layer quasi three-dimensional equivalent model is verified by the 3D FEM based on an AFPMSM under different structure *** demonstrates that the errors of flux linkage and average torque obtained by the multi-layer quasi three-dimensional equivalent model and 3D FEM are only around 2%although the structure parameters of the AFPMSM are ***,the computation time of one case based on the multi-layer quasi three-dimensional equivalent model is only 6 min,which is much less than that of the 3D FEM,1.8 h,under the same ***,the proposed multi-layer quasi three-dimensional equivalent model could be used to optimize the AFPMSM and much time could be saved by this method compared with the 3D FEM.

关键词： axial flux equivalent model end leakage permanent magnet machine

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Overview on Amorphous Alloy Electrical Machines and Their Key Technologies

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Chinese Journal of Electrical Engineering 2016年第1期2卷 1-12页

作者： Renyuan Tang Wenming Tong Xueyan Han Shenyang University of Technology Shenyang110870China

Amorphous alloy(AA)is attracting more and more attention in electrical machines due to its excellent low loss *** paper overviews advances on AA electrical machines over the last 30 years,with particular reference to new and novel topologies and processing techniques of AA electrical machines and their key *** include current states and trends for radial-flux AA electrical machines,axial-flux AA electrical machines,influences of processing techniques on electrical performance of AA iron cores,the characteristics of loss and vibration and noise of AA core and AA machines,optimum design of AA electrical machines,*** paper highlights the application prospects of the AA electrical machines.

关键词： Amorphous alloy electrical machine radial flux axial flux topologies and processing techniques loss noise and vibration.

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