Study on Shaft Voltage in Fractional Slot Permanent Magnet Machine With Different Pole and Slot Number Combinations

被引：13

作者：

Peng, Bo ^{[1
]}

Wang, Xiuhe ^{[1
]}

Zhao, Wenliang ^{[1
]}

Ren, Jie ^{[1
]}

机构：

[1] Shandong Univ, Sch Elect Engn, Jinan 250061, Shandong, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2019年 / 55卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Analytical method; finite-element method (FEM); fractional slot permanent magnet machines (FSPMMs); pole and slot number combinations; shaft voltage;

D O I：

10.1109/TMAG.2019.2898566

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：

A novel shaft voltage, which can also be consider the effect of slot, will be induced by the intrinsic electromagnetic structure in some fractional slot permanent magnet machines (FSPMMs) with certain pole and slot number combinations. By the aid of analytical method and finite-element method (FEM), the relationship of the shaft voltage and pole and slot number combinations is investigated and verified. A qualitative expression of the shaft voltage and the characteristic frequencies of the shaft voltage are predicted by the analytical method. The law of pole and slot number combinations which can yield or avoid the shaft voltage is deduced by the analytical method at the same time. By the FEM, the induced shaft voltages in eight FSPMMs with different slot and pole number combinations are calculated, and the results are well agree with the analytical deductions. As a result, the proposed work provides a theoretical foundation for the novel shaft voltage in FSPMMs and a general method to avoid and reduce the shaft voltage by suitable selection of pole and slot number, which can be a reference for FSPMMs design and fault diagnosis.

引用

页数：5