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Sleeve Design of permanent-magnet machine for Low Rotor Losses

Chinese Journal of Electrical Engineering 2020年第4期6卷 86-96页

作者： Junqiang Zheng Wenxiang Zhao Jinghua Ji Jihong Zhu Christopher H.T.Lee School of Electrical and Information Engineering Jiangsu UniversityZhenjiang 212013China Department of Computer Science and Technology Tsinghua UniversityBeijing 100000China School of Electrical and Electronic Engineering Nanyang Technological University639798Singapore

In this study,a novel rotor sleeve for permanent-magnet(PM)machines equipped with fractional-slot concentrated-windings(FSCW)is *** the newly designed rotor sleeve,the rotor eddy-current(EC)losses are significantly reduced,and the torque density of the machine is ***,the rotor EC losses of a surface-mounted PM machine with the sleeve are ***,the sleeve EC barriers and PM segmentation technologies for the suppression of the rotor EC losses are ***,an FSCW PM machine with the newly designed sleeve is proposed and optimized for a given set of *** electromagnetic and mechanical performances are evaluated by the finite element method(FEM).Finally,three assembling methods are presented and assessed comprehensively in terms of their merits and drawbacks.

关键词： permanent-magnet machine rotor losses sleeve eddy-current concentrated-windings

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Overview of permanent-magnet Fault-Tolerant machines: Topology and Design

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CES Transactions on Electrical machines and Systems 2018年第1期2卷 51-64页

作者： Wenxiang Zhao Liang Xu Guohai Liu School of Electrical and Information Engineering Jiangsu UniversityZhenjiang 212013China

permanent-magnet(PM)machines have attracted a lot of interest in various applications since they have the merits of high torque density,high power density and high ***,issue of poor fault tolerance of the conventional PM machines restricts their practical applications in the field of safety-critical applications,***,electric vehicle,electrical propulsion and wind power generator *** enormous amount of work has been done to improve the fault-tolerant capability of PM *** paper will review research work on PM fault-tolerant machines up-to-date,including modular design,short-circuit current limitation design,redundant design,ease of thermal dissipation of PM design,and torque enhancement design *** work of this paper can provide some references for future studies and engineering applications of PM fault-tolerant machines for safety-critical applications.

关键词： Fault-tolerant machine modular overview permanent-magnet machine torque

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