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

The Korean Institute of Power Electronics (전력전자학회)
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Carrier-based Modulation Method for Matrix Converter

캐리어를 이용한 매트릭스 컨버터의 전압 변조 방법

  • 윤영두 (서울대 전기컴퓨터공학부) ;
  • 설승기 (서울대 전기컴퓨터공학부)
  • Published : 2005.12.01
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Abstract

This paper presents a carrier-based modulation method for the control of a matrix converter. By using the offset voltage and changing the slope of the carrier, it is possible to synthesize sinusoidal input currents with unity power factor and the desired output voltages. The proposed method is equivalent to the so called SVPWM (Space Vector PWM) method, but its implementation is much easier. Moreover, the proposed method is very attractive because it is possible to apply the 2 phase t 3 phase modulation method, overmodulation method and other methods which are well-developed in the study of voltage source inverters (VSI) to the matrix coverter modulation. The feasibility of the proposed modulation method has been verified by computer simulation and experimental results.

본 논문에서는 캐리어(Carrier)를 이용한 매트릭스 컨버터(Matrix Converter)의 전압 변조 방법을 제안한다. 출력상전압에 적절한 옵셋(Offset) 전압을 더하고, 캐리어 파형의 기울기를 적절히 제어함으로써 입력 전류를 역율 1의 정현파로 제어하면서 동시에 출력 전압의 합성이 가능하다. 이 방법은 기존의 매트릭스 컨버터 전압 변조 방법인 SVPWM과 동일한 스위칭 패턴을 나타내지만, 그 구현은 훨씬 간단한다. 또한 기존의 전압형 인버터(Voltage Source Inverter, VSI)에서 발전된 2상/3상 변조, 과변조(Over Modulation) 등의 개념을 유사하게 적용할 수 있어 그 활용도가 매우 논다. Matlab/Simulink를 이용한 시뮬레이션 결과와 실험을 통해 제안된 방법의 타당성을 검증하였다.

Keywords

References

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