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

  • 제16권6호
  • /
  • Pages.594-601
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  • 2011
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  • 1229-2214(pISSN)
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  • 2288-6281(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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전원전압의 불평형 및 왜곡 보상기능을 갖는 3상 PWM 정류기의 전류제어기

A Current Controller with the Compensation of the Input Voltage Unbalance and Distortion for Three Phase PWM Rectifier

  • 신근희 (충주대 제어계측공학과) ;
  • 김학원 (충주대 제어계측공학과) ;
  • 조관열 (충주대 제어계측공학과) ;
  • 임병국 (충주대 제어계측공학과)
  • 투고 : 2011.09.29
  • 심사 : 2011.11.09
  • 발행 : 2011.12.20
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초록

본 논문은 상용의 전원 전압이 불평형 및 왜곡을 갖는 경우, 전원전압 불평형 및 왜곡 보상기능을 갖는 전류제어기를 제안한다. 일반적으로 3상 전원 시스템은 공통 입력 단자 (Point of Common Coupling)에 단상 부하 및 비선형 부하가 3상 부하와 같이 연결될 수 있어, 종종 불평형과 왜곡이 발생한다. 이런 조건하에서 3상 PWM 정류기를 일반적인 전류 제어기로 제어 할 경우, 3상 PWM 정류기 입력 전류가 불평형 및 왜곡을 갖는 문제가 발생한다. 본 논문에서는 간단한 모델 기반 적응 제어 시스템(Model Reference Adaptive System)기법을 이용하여 3상 입력 전압의 불평형 및 왜곡을 관측하고 전향 보상하는 전류 제어기를 제안하며, 모의해석과 실험을 통하여 그 효용성을 입증한다.

In this paper, a new current controller with the compensation of an unbalance and distorted grid voltages has been proposed. Generally, in the three-phase power system, single phase or nonlinear loads can be connected with the 3 phase linear load simultaneously on the same point of common coupling. Therefore, The source voltage unbalance and distortion problem can be occurred. Under these unbalance and distorted grid voltage conditions, the input current of 3 phase PWM rectifiers also have unbalance and distortion. In this paper, a current controller with the simple Model Reference Adaptive System based unbalance and distorted voltages observer is proposed to get a sinusoidal input current. The performance of the proposed algorithm is verified through the simulation and the experiment.

키워드

참고문헌

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피인용 문헌

  1. Switch Open Fault Detection and Tolerant Operation Method for Three Phase PWM Rectifier vol.17, pp.3, 2012, https://doi.org/10.6113/TKPE.2012.17.3.266
  2. Active Damping of LCL Filter for Three-phase PWM Inverter without Additional Hardware Sensors vol.18, pp.1, 2013, https://doi.org/10.6113/TKPE.2013.18.1.10