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

  • 제16권5호
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  • Pages.466-476
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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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왜곡된 전원 전압하에서 Composite 관측기를 이용한단상 PWM 컨버터의 정현파 전류 제어

Sinusoidal Current Control of Single-Phase PWM Converters under Voltage Source Distortion Using Composite Observer

  • 투고 : 2011.08.05
  • 심사 : 2011.09.02
  • 발행 : 2011.10.20
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초록

본 논문에서는 composite 관측기를 이용하여 전원전압 왜곡시 단상 PWM 컨버터의 고성능 전류제어를 제안한다. composite 관측기를 적용함으로써 전원 전압 및 전류의 기본파와 고조파 성분을 시간지연 없이 추출할 수 있다. 추출된 기본파 성분은 전원단의 페이저 각을 찾는 PLL시스템에 이용된다. 멀티 비례-공진 제어기로 단상 입력전류를 정현파로 제어하고 고조파 성분을 제거한다. 시뮬레이션과 실험 결과로 제안된 방법의 타당성을 검증한다.

In this paper, a high-performance current control for the single-phase PWM converter under distorted source voltages is proposed using a composite observer. By applying the composite observer, the fundamental and high-order harmonic components of the source voltage and current are extracted without a delay. The extracted fundamental component is used for a phase-lock loop (PLL) system to detect the phase angle of the source voltage. A multi-PR (proportional-resonant) controller is employed to regulate the single-phase line current. The high-order harmonic components of the line current are easily eliminated, resulting in the sinusoidal line current. The simulation and experimental results have verified the validity of the proposed method.

키워드

참고문헌

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피인용 문헌

  1. Advanced SOGI-FLL Scheme Based on Fuzzy Logic for Single-Phase Grid-Connected Converters vol.14, pp.3, 2014, https://doi.org/10.6113/JPE.2014.14.3.598
  2. Control Strategy for Three-Phase Grid-Connected Converters under Unbalanced and Distorted Grid Voltages Using Composite Observers vol.13, pp.3, 2013, https://doi.org/10.6113/JPE.2013.13.3.469