Variation Regularity and Measurement of Zero-Sequence Inductance of Fractional Slot Concentrated Winding PMSMs

Journal article (2022)

Authors

Zichong Zhu Nanjing Tech University
Jun Deng Nanjing Tech University
Xun Dou Nanjing Tech University
Lei Mei Nanjing Tech University
Yunkai Huang Southeast University
J. Dong DC systems, Energy conversion & Storage - EEMCS
Research Group
DC systems, Energy conversion & Storage (EEMCS) (TU Delft)
Copyright: © 2022 Zichong Zhu, Jun Deng, Xun Dou, Lei Mei, Yunkai Huang, J. Dong
DOI: https://doi.org/10.1109/TEC.2022.3172856
Permanent magnet machine Layout Windings Torque Inductance Harmonic analysis Fractional slot concentrated winding Inductance measurement Inductance measurement Power capacitors Winding function Zerosequence inductance
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Published Date

2022

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

DC systems, Energy conversion & Storage

Abstract

The zero-sequence inductance is a vital parameter for the performance analysis of permanent magnet machines, especially under faulty conditions or in open-winding machines. This paper focuses on the zero-sequence inductance calculation of fractional slot concentrated winding permanent magnet synchronous machines (FSCW-PMSMs), and reveals the variation regularity of this kind of inductance and its various components against pole/slot combinations, using the winding function and finite element methods. Moreover, based on the analysis of 36-slot FSCW-PMSMs with different pole numbers, the dependency of each inductance component on the pole/slot combination is discussed in detail. To validate the regularities, experimental measurements of zero-sequence inductance are implemented in the prototype of the 36-slot stator. It is found that the regularities are independent of specific slot or pole numbers, which provide guidelines for optimum pole/slot combination selection, to mitigate the problems caused by zero-sequence current.