전력전자학회논문지 (The Transactions of the Korean Institute of Power Electronics)

  • 제14권2호
  • /
  • Pages.142-149
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  • 2009
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  • 1229-2214(pISSN)
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  • 2288-6281(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
권호 표지

단위 역률을 갖는 직접 시비율 변조방식 3상 매트릭스 컨버터의 제어 및 동작 특성

Control and Operating Characteristics of Three-Phase Matrix Converter with Unity Power Factor by Direct Duty-Ratio Modulation Method

  • 이옥룡 (현대중공업 전기전자시스템사업본부) ;
  • 최남섭 (전남대 전기전자통신컴퓨터공학부) ;
  • 한병문 (명지대 전기공학과)
  • 발행 : 2009.04.20
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초록

본 논문은 단위 역률을 갖도록 직접 시비율 펄스폭 변조 방식으로 제어되는 3상 매트릭스 컨버터의 평형 및 불평형 부하시의 동작 특성을 고찰한다. 시스템의 해석으로부터 얻어진 중요하고 유용한 사실을 정리하면 다음과 같다. (1) 단위 역률 제어 알고리즘은 부하측의 변수에 의해서가 아니라 입력전압에 의하여 정해진다. (2) 평형 3상 부하가 리액티브 부하인 경우만 아니라면 입력측 역률을 1로 만들 수 있다. (3) 불평형 선형부하의 경우, 매트릭스 컨버터의 등가입력 특성은 비선형저항과 같다. (4) 입력 주파수와 출력 주파수가 특정한 관계를 가질 때, 입력측의 각상은 동일한 평균전력 분담률을 갖는다. 해석의 타당성과 유효성은 시뮬레이션과 실험결과를 통하여 검증하였다.

This paper investigates operating characteristics of three-phase matrix converter with unity input power factor by direct duty-ratio pulse-width modulation in the case of balanced and unbalanced load. It can be found from the system analysis that (1) The control algorithm for unity power factor is not related to the variables of load sides but the input voltages, (2) With the balanced three-phase load except for the pure reactive load, the unity input power factor can be achieved, (3) In the case of the unbalanced linear load, the equivalent input characteristics of the matrix converter can be seen like the nonlinear resister, (4) When the input frequency and the output frequency have the specific relationship, each input phases have the same sharing of the average power. The feasibility and validity of the analysis were verified by simulation and experimental results.

키워드

참고문헌

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