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Design and Performance Analysis of Permanent Magnet Claw Pole Machine with hybrid cores

中国电工技术学会电机与系统学报(英文) 2023年第3期7卷 275-283页

作者： Chengcheng Liu Zheng Chao Shaopeng Wang Youhua Wang IEEE State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology and Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei ProvinceHebei University of TechnologyTianjin 300130China

Permanent magnet claw pole machine(PMCPM) is a special kind of transverse flux permanent magnet machine. Compared with other electrical machines, it has the advantages of high torque density and high efficiency for high speed operation. However, because of its complex irregular structure, the manufacturing process using silicon sheets is complicated. Soft magnetic composite material(SMC) is manufactured by powder metallurgy technology, which can produce various shapes of stator core structures, so it is easier to produce various irregular shapes of the stator core. However, the raw SMC material is relatively expensive, and the mechanical strength of SMC is weak. In this paper, a PMCPM with hybrid cores is proposed. With the adoption of hybrid silicon sheet-SMC cores and amorphous alloy-SMC cores, the torque ability of PMCPM can be improved greatly and it can have higher efficiency for more wide operation frequency. Meanwhile, its mechanical strength has been improved and it can be designed for high torque direct drive applications as it is a modular machine. Furthermore, three methods are proposed to reduce the additional eddy current loss which resulted from the employment of hybrid cores in PMCPM.

关键词： Permanent magnet claw pole machine(PMCPM) Soft magnetic materials(SMC) hybrid cores Eddy current loss

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Electromagnetic Performance Analysis of Flux-Switching Permanent Magnet Tubular Machine with hybrid cores

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CES Transactions on Electrical Machines and Systems 2020年第1期4卷 43-52页

作者： Shaopeng Wang Chengcheng Liu Youhua Wang Gang Lei Youguang Guo Jianguo Zhu State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology and Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei ProvinceHebei University of TechnologyTianjin300130China School of Electrical and Data Engineering University of Technology SydneyNSW 2007Australia school of electrical and information engineering University of SydenyNSW 2007Australia

The performance of traditional flux switching permanent magnet tubular machine(FSPMTM)are improved by using new material and structure in this paper.The existing silicon steel sheet making for all mover cores or part of stator cores are replaced by soft magnetic composite(SMC)cores,and the lamination direction of the silicon steel sheet in stator cores have be changed.The eddy current loss of the machine with hybrid cores will be reduced greatly as the magnetic flux will not pass through the silicon steel sheet vertically.In order to reduce the influence of end effect,the unequal stator width design method is proposed.With the new design,the symmetry of the permanent magnet flux linkage has been improved greatly and the cogging force caused by the end effect has been reduced.Both 2-D and 3-D finite element methods(FEM)are applied for the quantitative analysis.

关键词： Flux switching permanent magnet tubular machine soft magnetic composite(SMC) hybrid cores unequal width stator finite element method(FEM).

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