The Parallel Operation of AC to DC PWM Converters for a High Speed Railway Train

고속전철용 입력 AC/DC PWM 컨버터의 병령운전

  • 류홍제 (한국전기연구소 산업전기연구단) ;
  • 우명호 (한국과학기술연구원 Post-Doc 과정) ;
  • 김종수 (한국전기연구소 산업전기연구단) ;
  • 임근희 (한국전기연구소 산업전기연구단) ;
  • 원충연 (성균관대 전기전자컴퓨터공학부)
  • Published : 2000.04.01

Abstract

This paper deals with the parallel operation of several numbers of PWM converters for a high speed railway train application. Several considerations are made to reduce the transformer interaction which can cause a current control problem in severe case. Also, in this paper, novel control strategy is proposed to achieve a harmonic free primary-side current control under a light load condition using one current sensor independent of the number of converters. In addition, the modified predictive current controller, which is suitable to a digital current controller with a relatively large sampling period, is used. Finally, to verify the system validity, digital control system with TMS320C44 micro-processor and small scale simulator are made and tested.

Keywords

References

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