A Novel Asymmetric-Magnetic-Pole Interior PM Machine With Magnet-Axis-Shifting Effect

被引:13
作者
Yang, Hui [1 ]
Qian, Cheng [1 ]
Wang, Weijia [1 ]
Lin, Heyun [1 ]
Zhu, Zi-qiang [2 ]
Niu, Shuangxia
Liu, Wei [1 ]
Lyu, Shukang [1 ]
机构
[1] Southeast Univ, Sch Elect Engn, Nanjing 210096, Peoples R China
[2] Univ Sheffield, Dept Elect & Elect Engn, Sheffield S1 3JD, S Yorkshire, England
关键词
Torque; Rotors; Magnetic multilayers; Magnetic flux leakage; Magnetic circuits; Topology; Magnetic cores; Asymmetric-magnetic-pole; interior permanent magnet (IPM); magnet-axis-shifting (MAS); magnet torque; reluctance torque; DESIGN; HYBRID; OPTIMIZATION; DRIVES;
D O I
10.1109/TIA.2021.3111153
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This article proposes a novel asymmetric-magnetic-pole interior permanent magnet (AMP-IPM) machine, which is geometrically characterized by a combination of dual-layer reluctance and flat-type PM rotor structures. The design concept of "asymmetric-magnetic-pole" is introduced to achieve a magnet-axis-shifting effect, namely, the magnet d-axis is shifted to make PM and reluctance torque components approximately maximize at similar current angles. Consequently, the resultant torque can be further improved without increasing magnet usage. The machine topology is first introduced. The electromagnetic characteristics of the proposed AMP-IPM machine are then investigated and compared with those of the benchmark conventional IPM machine with symmetrical magnetic poles, with similar sizing and PM usage. Finally, an AMP-IPM machine prototype is manufactured and tested, which confirms the feasibility of the proposed AMP design for the torque performance improvement.
引用
收藏
页码:5927 / 5938
页数:12
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