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

Zichong Zhu, Jun Deng, Xun Dou, Lei Mei, Yunkai Huang, Jianning Dong

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
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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.

Original languageEnglish
Pages (from-to)2525-2534
Number of pages10
JournalIEEE Transactions on Energy Conversion
Issue number4
Publication statusPublished - 2022

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


  • Fractional slot concentrated winding
  • Harmonic analysis
  • Inductance
  • inductance measurement
  • Inductance measurement
  • Layout
  • permanent magnet machine
  • Power capacitors
  • Torque
  • winding function
  • Windings
  • zerosequence inductance


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