TY - GEN
T1 - Design Method of Variable-Flux Machines for Improving Torque Density
AU - Liu, Faliang
AU - Wang, Mingqiao
AU - Liu, Yong
AU - Zheng, Zaiping
AU - Zheng, Ping
AU - Fu, Jie
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - In order to improving the torque density of the variable-flux machine, design methods for both series and parallel configurations are proposed based on the theoretical analysis. After the traditional rare-earth permanent-magnet (PM) synchronous machines (PMSM) is converted into the VFM, two typical configurations of the VFMs are given. To determine what kinds of low-coercive-force (LCF) magnets possessing torque improving capability, the simplified equivalent magnetic circuits for both configurations are established. The torque improving method for the series-configuration VFM is deduced based on the magnetic circuit. The output capability of series-configuration VFM with different LCF magnets are analyzed, which validate the accuracy of the deduced method. Then, by assuming the magnetic reluctance of the teeth and yoke is much smaller than other reluctances, the contour maps of air-gap flux density for the parallel-configuration VFMs are investigated. Based on the proposed methods, the torque density of the VFMs with series-, parallel- and hybrid-configuration can be improved.
AB - In order to improving the torque density of the variable-flux machine, design methods for both series and parallel configurations are proposed based on the theoretical analysis. After the traditional rare-earth permanent-magnet (PM) synchronous machines (PMSM) is converted into the VFM, two typical configurations of the VFMs are given. To determine what kinds of low-coercive-force (LCF) magnets possessing torque improving capability, the simplified equivalent magnetic circuits for both configurations are established. The torque improving method for the series-configuration VFM is deduced based on the magnetic circuit. The output capability of series-configuration VFM with different LCF magnets are analyzed, which validate the accuracy of the deduced method. Then, by assuming the magnetic reluctance of the teeth and yoke is much smaller than other reluctances, the contour maps of air-gap flux density for the parallel-configuration VFMs are investigated. Based on the proposed methods, the torque density of the VFMs with series-, parallel- and hybrid-configuration can be improved.
KW - magnetic circuit
KW - permanent-magnet (PM)
KW - variable-flux machine
UR - https://www.scopus.com/pages/publications/85146345062
U2 - 10.1109/ICEMS56177.2022.9982829
DO - 10.1109/ICEMS56177.2022.9982829
M3 - 会议稿件
AN - SCOPUS:85146345062
T3 - 2022 International Conference on Electrical Machines and Systems, ICEMS 2022
BT - 2022 International Conference on Electrical Machines and Systems, ICEMS 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 25th International Conference on Electrical Machines and Systems, ICEMS 2022
Y2 - 29 November 2022 through 2 December 2022
ER -