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Comparison of efficiency for different switching tables in six-phase induction motor DTC drive

Taheri, A ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.6113/JPE.2012.12.1.128
  3. Publisher: 2012
  4. Abstract:
  5. In this paper, different switching tables proposed for the Direct Torque Controlled (DTC) of a six-phase induction machine are simulated and implemented. A six-phase induction motor has 64 space voltage vectors which result in increased complexity in the selecting of inverters switching. The unsuitable selection of a switching table leads to large harmonics especially at low speed and it also reduces drive efficiency. A six-phase induction machine has large zero sequence harmonic currents of the order 6k ±1. These harmonic currents are varied in various techniques. Decreasing this loss is essential in a six-phase induction machine. The main purpose of this paper is to improve the ST-DTC of six-phase induction machines to reduce the voltage and current harmonics and the torque pulsation. Selecting a suitable method for minimizing these harmonics is very important
  6. Keywords:
  7. Direct torque ; Direct torque control ; Efficiency improvement ; Harmonic currents ; Low speed ; Six-phase ; Six-phase induction machines ; Space voltage vectors ; Switching tables ; Torque pulsation ; Voltage and current harmonics ; Zero sequences ; Electric drives ; Harmonic analysis ; Induction motors ; Switching
  8. Source: Journal of Power Electronics ; Volume 12, Issue 1 , 2012 , Pages 128-135 ; 15982092 (ISSN)
  9. URL: http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=E1PWAX_2012_v12n1_128