Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
권호 표지

Method for Damping Resonant Voltages on the Output LC Filter of PWM Inveter

PWM인버터의 출력 LC필터에 의한 공진전압 억제 기법

  • Choi G. J. (Dept. of Electrical Eng., Univ. of Ulsan) ;
  • Chun T. W. (Dept. of Electrical Eng., Univ. of Ulsan) ;
  • Lee H. H. (Dept. of Electrical Eng., Univ. of Ulsan) ;
  • Nho E. C. (Dept. of Electrical Eng., Univ. of Pukyong) ;
  • Kim H. G. (Dept. of Electrical Eng., Univ of Kyungpook)
  • Published : 2004.07.01
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Abstract

The U filter has been generally used to filter the output voltage of PWM inverter to the sinusoidal waveform. The resonant voltage on the output voltage of PWM inverter may be generated due to LC filter. This paper proposed the algorithm to damp the resonant voltage using the virtual resistor without decreasing the efficiency by the power loss in the real resistor The method is appled to the vector controlled induction motor driven by the PWM inverter with the LC filter. The simulation results are carried out to verify the performances of the proposed algorithm.

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