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Permanent Magnet Assisted Synchronous reluctance Motor with Asymmetric Rotor for High torque Performance

CES Transactions on Electrical Machines and Systems 2023年第2期7卷 179-186页

作者： Chengwu Diao Wenliang Zhao Yan Liu Xiuhe Wang the School of Electrical Engineering Shandong UniversityJinan250061China IEEE the China Aviation Control System Research Institute Wuxi214000China

Permanent magnet assisted synchronous reluctance motor(PMA-SynRM)is a kind of high torque density energy conversion device widely used in modern *** this paper,based on the basic topology of PMA-SynRM,a novel PMA-SynRM of asymmetric rotor with position-biased magnet is *** asymmetric rotor design with position-biased magnet realizes the concentration of magnetic field lines in the motor air gap to obtain higher electromagnetic torque,and makes both of magnetic and reluctance torque obtain the peak value at the same current phase *** asymmetric rotor configuration is theoretically illustrated by space vector diagram,and the feasibility of high torque performance of the motor is *** the finite element simulation,the effect of the side barrier on output torque and the Mises stress under the rotor asymmetrical design are *** the motor characteristics including airgap flux density,back EMF,magnetic torque,reluctance torque,torque ripple,losses,and efficiency are calculated for both the basic and proposed *** results show that the proposed PMA-SynRM has higher torque and efficiency than the basic ***,the torque ripple of the proposed PMA-SynRM is reduced by the method with harmonic current injection,and the torque characteristics in the whole current cycle are ***,the endurance to avoid PM demagnetization is confirmed based on the PM remanence calculation.

关键词： Permanent magnet assisted synchronous reluctance motor Asymmetric rotor Magnetic torque reluctance torque torque ripple

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Improvement torque Performances of Interior Permanent-Magnet Machines

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CES Transactions on Electrical Machines and Systems 2019年第1期3卷 12-18页

作者： Junqiang Zheng Wenxiang Zhao Christopher H.T.Lee Jinghua Ji Gaohong Xu School of Electrical and Information Engineering Jiangsu UniversityZhenjiang 212013China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore

Due to their excellent efficiency,power density and constant power speed region,interior permanent-magnet(IPM)machines are very suitable for electric vehicles(EVs).This paper proposed a new IPM rotor topology,which can offer high reluctance torque,wide constant power speed range and excellent overload ***,five rotor topologies with integral-slot distributed-windings IPM machines,including four existing IPM topologies and the proposed IPM topology,are designed *** characteristics,which include d-q axis inductances,saliency ratios,electromagnetic torques,corresponding torque ripples,back-electromotive forces(EMFs),overload capabilities and flux weakening performances are evaluated ***,a three phase 48s8p hybrid rotor PM machine is built to verify the performances of the proposed IPM *** work provides some general concepts for machine developers who are willing to build IPM machines for high-performance EV applications.

关键词： Flux weakening finite-element analysis(FEA) interior permanent-magnet brushless machine reluctance torque inductance.

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维普期刊数据库

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Inductances Estimation in the d-q Axis for an Interior Permanent-Magnet Synchronous Machines with Distributed Windings

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Journal of Energy and Power Engineering 2013年第6期7卷 1178-1185页

作者： Abdessamed Soualmi Frederic Dubas Daniel Depemet Andry Randrai Christophe Espanet Energy Department University de Franche-Comte Belfort 90000 France Research and Development Department Alstom Transport Ornans 25290 France Energy Department University of Technology Belfort-Montb~liard Belfort 90000 France

The inductances in d-q axis have an important influence on the behavior of PMSM （PM （permanent-magnet） synchronous machines）. Their calculation is fundamental not only to evaluate the performance such as torque and field weakening capability but also to design the control system to maximize performance and power factor. This paper presents a study of inductance in the d-q axis for buried （i.e., IPMSM （interior） PM Synchronous Machines）. This study is achieved using 2-D （two-dimensional） FEM （finite-element method） and Park＇s transformation.

关键词： Interior PM synchronous machine distributed winding d-q inductances Park's transformation reluctance torque cross-saturation.

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