Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Development of the 300kVA Large Capacity IGBT UPS

IGBT를 적용한 300kVA급 대용량 무정전전원장치 개발

  • 변영복 (한국전기연구소 전력전자연구부) ;
  • 김태진 (한국전기연구소 전력전자연구부) ;
  • 조기연 (한국전기연구소 전력전자연구부) ;
  • 박성준 (거제대 전기과) ;
  • 김철우 (부산대학교 전기공학과)
  • Published : 1998.07.20
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Abstract

In order to maintain a high quality output voltage, conventional UPS systems use complex filters with large passive components. To overcome this drawback, real time feedback control schemes have been invested. However, these techniques require a high inverter switching frequency to dynamically adapt to changing load conditions reduce harmonics of the output voltage, thereby rendering the system inadequate for high power applications. This paper presents real time digital signal processor(DSP) control of a large capacity UPS system feeding nonlinear loads to provide a sinusoidal inverter output voltage, unity input power factor, low bus voltage ripple, and excellent transient response.

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