中国电机工程学报2017，Vol.37Issue(21)：6168-6180,13.DOI:10.13334/j.0258-8013.pcsee.170289
不等内外定子极数配合对双定子偏置磁通永磁电机电磁性能的影响
Partitioned Stator Biased Flux Permanent Magnet Machines With Unequal Inner and Outer Stator Pole Number Combinations
史俊韬 1诸自强1
作者信息
- 1. 英国谢菲尔德大学,谢菲尔德S1 3JD,英国
- 折叠
摘要
Abstract
This paper comparative studies the influence of unequal inner and outer stator pole number combinations (Nis≠Nos) on the electromagnetic performance of partitioned stator biased flux permanent magnet (PM) machines (PS-BFPMMs). The polarity of coil flux-linkage is unipolar in PS-BFPMMs with Nis=Nos/2 (less PMs) while it is bipolar in PS-BFPMMs with Nis=2Nos (less slots). However, the symmetrical bipolar phase flux-linkages can be obtained in both PS-BFPMM with Nis=Nos/2 and Nis=2Nos when the ratio of Min(Nos, Nis) to the greatest common divisor of Min (Nos, Nis) and Nr (number of rotor pole) is even. Compared with PS-BFPMMs with Nis=Nos under the individual optimal rotorpole numbers and the same rated copper loss, PS-BFPMM with Nis=Nos/2 exhibits 41% lower phase back-EMF, 38.4% smaller average torque and 1.1% lower PM utilization efficiency while PS-BFPMM with Nis=2Nos has 20.4% higher phase back-EMF,30.3% larger average torque and 24.4% higher PM utilization efficiency. Moreover, the reluctance torques are negligible in both PS-BFPMMs with Nis=Nos/2 and Nis=2Nos due to the extremely low saliency ratios. The analyses have been experimentally validated by several prototype machines.关键词
偏置磁通/永磁电机/双定子/不等定子极数Key words
biased flux/permanent magnet motor/partitioned stator/unequal stator pole number分类
信息技术与安全科学引用本文复制引用
史俊韬,诸自强..不等内外定子极数配合对双定子偏置磁通永磁电机电磁性能的影响[J].中国电机工程学报,2017,37(21):6168-6180,13.
