무손실 가변 영전압 구간을 갖는 새로운 저손실 준 병렬공진 직류-링크 인버터

A New Low Loss Quasi Parallel Resonant DC-Link Inverter with Variable Lossless Zero Voltage Duration

  • 권경안 (LG전자 리빙시스템연구소 전력전자팀) ;
  • 김권호 (한국과학기술연구원 지능제어연구센터) ;
  • 최익 (한국과학기술연구원 지능제어연구센터) ;
  • 정용채 (LG전자 리빙시스템 연구소 전력전자팀) ;
  • 박민용 (연세대하교 전자공학과)
  • 발행 : 1997.06.01

초록

본 논문에서는 개선된 PWM 적용성, 저손실 특성 및 낮은 전압 스트레스를 가지는 새로운 저손실 준 병렬공진 직류-링크 인버터를 제안한다. 직류-링크 동작손실을 대폭 감소시킴은 물론 넓은 동작범위에 걸쳐 안정한 소프트 스위칭을 보장하기 위하여 프리휠링 구간을 최소화시키는 방법을 또한 제안한다. 게다가 직류-링크의 영전압 구간의 무손실 제어에 의하여 낮은 변조지수 동작에 있어서도 제안된 인버터는 개선된 PWM 적용성을 보인다. 제안된 인버더 토폴로지의 유용성을 확인하기 위하여 실험 및 시뮬레이션을 행하였다.

In this paper, a New Low Loss Quasi-Parallel Resonant DC-Link(NLQPRDCL) Inverter which shows highly improved PWM capability, low loss characteristic and low voltage stress is presented. A method to minimize freewheeling interval, which is able to largely decrease DC-link operation losses and to steadily guarantee soft switching in the wide operation region is also proposed. In addition, lossless control of zero voltage duration of DC-link makes the proposed inverter maintain the advanced PWM capability even under a very low modulation index. Experiment and simulation were performed to verify validity of the proposed inverter topology.

키워드

참고문헌

  1. IEEE-IAS Annual Conference Records The Resonant DC Link Converter-A New Concept In Power Conversion D.M. Divan
  2. IEEE-IAS Annual Conference Records Zero Switching Loss Inverters for High Power Application D.M Divan;G.L. Skinbinski
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  4. IEEE-IAS Annual Conference Records Zero Voltage Switching PWM Inverter for High Frequency DC-AC Power Conversion Jin He(et. al.)
  5. IEEE PESC Records Novel Soft Switching PWM Converter Using A New Parallel Resonant DC-Link Jung G. Cho(et. al.)
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