Effect of angle displacements on electromagnetic performance of dual three-phase consequent-pole permanent magnet machine

被引：11
作者：
Li, Feng [1 ]
Wang, Kai [1 ]
Zhang, Jianya [1 ]
Zeng, Fanquan [2 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Automat Engn, Nanjing, Peoples R China
[2] Shanghai Inst Spaceflight Control Technol, Shanghai, Peoples R China
来源：
IET ELECTRIC POWER APPLICATIONS | 2020年 / 14卷 / 07期
基金：
中国国家自然科学基金;
关键词：
rotors; permanent magnet machines; electric potential; torque measurement; demagnetisation; braking; short-circuit currents; air gaps; unbalanced magnetic force; electromagnetic performance; CP rotor; electromagnetic characteristics; torque performance; back-EMF waveforms; consequent pole rotor; utilisation ratio; N poles; S poles; salient rotor iron; asymmetric air-gap flux density; angle displacement effect; dual three-phase consequent-pole permanent magnet machine; even-order back electromotive force harmonics; PM machine; short circuit current; braking torque; PM demagnetisation; healthy conditions; fault conditions; 24-slot 22-pole prototype machine; static torque measurement; 6-PHASE INDUCTION-MOTOR; IMPROVEMENT; REDUCTION; DESIGN; DRIVES; PMSM;
D O I：
10.1049/iet-epa.2019.0611
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The machine with consequent pole (CP) rotor can improve the utilisation ratio of permanent magnet (PM). However, all the N poles or S poles are replaced by salient rotor iron, leading to the asymmetric air-gap flux density. It potentially results in even-order back electromotive force (back-EMF) harmonics and unbalanced magnetic force. This study aims to investigate the influence of various angle displacements (i.e. 0 degrees, 15 degrees, 30 degrees and 60 degrees) on the electromagnetic performance of the dual three-phase PM machine with CP rotor. The electromagnetic characteristics, including air-gap flux density, back-EMF, torque performance, short circuit current, braking torque and PM demagnetisation under both healthy and fault conditions are compared comprehensively. Finally, the 24-slot/22-pole prototype machine is manufactured. The back-EMF waveforms and static torque are measured and compared to the finite-element predicted results to validate the theoretical analysis.
引用
收藏
页码：1177 / 1185
页数：9
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