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

The Korean Institute of Power Electronics (전력전자학회)
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Design of Speed Controller for Stall Blade Wind Turbine Complying with the Speed Limit During Speed Overshoot

속도 오버슈트 발생 시 제한 속도를 초과하지 않는 실속형 블레이드 풍력터빈의 속도제어기 설계

  • Received : 2022.04.07
  • Accepted : 2022.06.08
  • Published : 2022.10.20
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Abstract

Blade efficiency decreases when the rotor speed is kept constant even though the wind speed is higher than the rated value. Therefore, a speed controller is used to regulate the rotor speed in the high-wind-speed region. In stall-blade wind turbine, the role of the speed controller is important because precise aerodynamic regulation is unavailable. In this study, an effective parameter design method of a PI speed controller is proposed to limit the speed overshoot of a type 4 wind turbine with stall blades even though wind gust occurs. The proposed method considers the efficiency characteristics of the stall blade and the mechanical inertia of the wind turbine rotor. It determines the bandwidth of the speed controller to comply with the speed limit during generator speed overshoot for the worst case of wind gust. The proposed method is verified through intensive simulations with a MATLAB/SIMULINK model and experimental results obtained using a 3 kW MG set of wind turbine simulator.

Keywords

Acknowledgement

본 연구는 2021년도 광운대학교 우수연구자 지원 사업 및 산업통상자원부(MOTIE)와 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구 과제입니다. (No. 20213030020320)

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