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author:

Zhou, Yangzhong (Zhou, Yangzhong.) [1] | Cheng, Ming (Cheng, Ming.) [2] | Xiong, Xianyun (Xiong, Xianyun.) [3]

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EI Scopus PKU CSCD

Abstract:

There may be serious distortion in stator currents of multi-phase permanent magnet synchronous motor with direct torque control (DTC) because of the nonlinear factors such as inverter dead-zone, power switch voltage drop and switching transition. A novel DTC was proposed for six-phase symmetric winding phase-shifted by a 60 degree permanent magnet synchronous motor. Firstly, the synthesized voltage vectors were determined to achieve the zero-sequence current, and the ideal DTC strategy was proposed based on the synthesized vectors. Secondly, the factual voltage vector operating time was compensated according to the principle of dead-zone compensation. At last, the voltage vector operating time was regulated continuously by a proportion-integral controller aiming at zero zero-sequence current. The experimental results show that the presented DTC has fast response of torque and the total harmonics is very small due to very lower zero-sequence current. ©2015 Chin. Soc. for Elec. Eng.

Keyword:

Electric machine control Permanent magnets Silicon compounds Synchronous motors Torque Torque control Vectors Winding

Community:

  • [ 1 ] [Zhou, Yangzhong]Electrical Engineering College, Southeast University, Nanjing; Jiangsu Province; 210096, China
  • [ 2 ] [Cheng, Ming]Electrical Engineering College, Southeast University, Nanjing; Jiangsu Province; 210096, China
  • [ 3 ] [Xiong, Xianyun]College of Electrical Engineering and Automation, Fuzhou University, Fuzhou; Fujian Province; 350108, China

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Source :

Proceedings of the Chinese Society of Electrical Engineering

ISSN: 0258-8013

CN: 11-2107/TM

Year: 2015

Issue: 10

Volume: 35

Page: 2504-2512

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 9

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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