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Direct torque control of four-switch three phase inverter fed induction motor using a modified SVM to compensate DC-link voltage imbalance

Kazemlou, S. H ; Sharif University of Technology

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  1. Type of Document: Article
  2. Abstract:
  3. In this paper the direct torque control (DTC) of the induction motor fed by four switch three phase inverter (FSTPI) is investigated. A modified space vector modulation (SVM) approach with optimal voltage vector sequence is proposed to compensate the effect of dc-link voltage variations caused by circulating phase current through the capacitor bank. SVMDTC scheme of FSTPI fed induction motor is based on stator flux oriented control. According to simulation results, this approach significantly reduces the effect of dc-link voltage variation on the output torque, flux and current waveforms
  4. Keywords:
  5. Capacitor bank ; Current waveforms ; DC-link voltages ; Direct torque control ; Four-switch three-phase inverters ; Modified SVM ; Output torque ; Phase currents ; Simulation result ; Space-vector modulation ; Stator flux oriented ; Switch three-phase inverters ; Voltage vectors ; Capacitors ; Electric power measurement ; Energy conversion ; Support vector machines ; Torque control ; Vector spaces ; Induction motors
  6. Source: 2009 International Conference on Electric Power and Energy Conversion Systems, EPECS 2009, 10 November 2009 through 12 November 2009, Sharjah ; 2009 ; 9789948427155 (ISBN)
  7. URL: http://www.ieeeexplore.ws/document/5415701/?reload=true