The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Research on the Direct-drive Wind Power Grid-connected System Based on the Back-to-back Double Closed-loop Full Control Strategy

연속 이중 폐쇄 루프 완전 제어 전략 기반 직접 구동 풍력 전력망 연결 시스템 연구

  • Received : 2024.06.02
  • Accepted : 2024.08.12
  • Published : 2024.08.31
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Abstract

Based on the topology of the direct-drive permanent magnet synchronous wind power grid-connected system based on the power electronics full-power converter, the wind turbine model and the grid-side inverter model were studied, and the machine-side rectifier control based on current and speed double closed loops was designed. strategy, as well as a grid-side inverter control strategy based on current and voltage double closed loops, implementing a two-level back-to-back double closed-loop full control strategy. A system simulation model was built using Matlab/Simulink, and the operation of the unit was simulated when the wind speed changed step by step. The grid-connected current with the same phase and good sinusoidal nature of the grid voltage was output. The grid-connected system ran stably and efficiently. The simulation results The validity and rationality of the model, as well as the correctness and feasibility of the control strategy were verified.

전력전자 풀파워 컨버터 기반의 직접 구동 영구자석 동기 풍력발전 그리드 연계 시스템의 토폴로지를 기반으로 풍력터빈 모델과 그리드 측 인버터 모델을 연구하고, 기계측 정류기 제어 기반의 전류 및 속도 이중 폐쇄 루프 전략과 전류 및 전압 이중 폐쇄 루프를 기반으로 한 그리드 측 인버터 제어 전략을 설계하여 2레벨 연속 이중 폐쇄 루프 완전 제어 전략을 구현했다. MATLAB/Simulink를 이용하여 시스템 시뮬레이션 모델을 구축하였고, 풍속이 단계별로 변할 때의 장치의 동작을 시뮬레이션하였으며, 그리드 전압의 동일한 위상과 양호한 정현파 특성을 갖는 그리드 연결 전류를 출력하였다. 연결된 시스템이 안정적이고 효율적으로 실행되었다. 시뮬레이션 결과 모델의 타당성과 합리성, 제어 전략의 정확성과 타당성을 검증하였다.

Keywords

Acknowledgement

This research was supported by the MSIT(Ministry of Science and ICT), Korea, under the Innovative Human Resource Development for Local Intellectualization support program(IITP-2024-RS-2022-00156334) supervised by the IITP(Institute for Information & communications Technology Planning & Evaluation). This research was supported by "Regional Innovation Strategy(RIS)" through the National Research Foundation of Korea(NRF) funded by the Ministry of Education(MOE)(2021RIS-004)

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