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研究不等内外定子极数配合(Nis≠Nos)对双定子偏置磁通永磁电机(partitioned stator biased flux permanent magnet machines,PS-BFPMMs)电磁性能的影响.对于Nis=Nos/2(少永磁)和 Nis=2Nos(少槽)的 PS-BFPMMs,其对应的线圈磁链的极性分别是单极性和双极性.然而,当 Min(Nos, Nis)和Min(Nos, Nis)与转子极数Nr之间的最大公约数的比例等于偶数时,在Nis=Nos/2和Nis=2Nos的PS-BFPMMs中都可以获得对称的双极性的相磁链.基于各自最佳的转子极数及相同的额定铜耗,相对于 Nis=Nos的 PS-BFPMMs,Nis=Nos/2的PS-BFPMMs展现出低41%的相反电动势,低38.4%的平均转矩及低1.1%的永磁利用率;然而,Nis=2Nos的PS-BFPMMs则展现出高20.4%的相反电动势,高30.3%的平均转矩及高24.4%的永磁利用率.此外,由于各自极低的凸极比, Nis=Nos/2和Nis=2Nos的PS-BFPMMs的磁阻转矩都是可忽略的.最后,两台样机实验结果验证了分析的有效性.“,”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.