• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 30 Issue 2
Apr.  2017
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Article Contents
LIU Lingshun, YAN Hongguang, HAN Haopeng, ZHAO Guorong. Effects of Space Harmonics on Series-Connected Symmetrical Six- and Three-Phase Permanent Magnet Synchronous Motors Driver System[J]. Journal of Southwest Jiaotong University, 2017, 30(2): 348-354. doi: 10.3969/j.issn.0258-2724.2017.02.019
Citation: LIU Lingshun, YAN Hongguang, HAN Haopeng, ZHAO Guorong. Effects of Space Harmonics on Series-Connected Symmetrical Six- and Three-Phase Permanent Magnet Synchronous Motors Driver System[J]. Journal of Southwest Jiaotong University, 2017, 30(2): 348-354. doi: 10.3969/j.issn.0258-2724.2017.02.019

Effects of Space Harmonics on Series-Connected Symmetrical Six- and Three-Phase Permanent Magnet Synchronous Motors Driver System

doi: 10.3969/j.issn.0258-2724.2017.02.019
  • Received Date: 24 May 2014
  • Publish Date: 25 Apr 2017
  • The decouple operation of the series-connected symmetrical six- and three-phase permanent magnet synchronous motors (PMSMs) driven by single inverter is theoretically based on the sinusoid electromotive force. To study influences of space harmonics on the decouple control of the series-connected system, mathematic models for the series-connected system with the 2nd and 4th harmonics of a symmetrical six-phase PMSM are established in three different coordinates. The torque ripple expression of the six-phase PMSM induced by space harmonic is setup, which reveals mathematically the essence of harmonic effects on the decouple control of series-connected system. In addition, simulations are conducted for two PMSMs with variable speed and variable loads. The results show that the torque ripple changes are caused by the 2th and 4th space harmonics of the symmetrical six-phase PMSM; consequently, operations of the series-connected two PMSMs cannot be controlled independently and need a corresponding compensating control.

     

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