Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Modeling of Hybrid Generation System with Wind Turbine, Diesel Generator and Flywheel Energy Storage System

풍력-디젤-플라이휘일 하이브리드 발전시스템 모델링에 관한 연구

  • Kim, Jae-Eon (Department of Electrical Engineering, Chungbuk National University)
  • 김재언 (충북대학교 전자정보대학 전기공학부)
  • Received : 2013.04.26
  • Accepted : 2013.06.07
  • Published : 2013.06.30
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Abstract

This paper proposes a modeling and controller design method of Flywheel Energy Storage System(FESS) for solving the unstable operation problem in hybrid generation system with wind turbine and diesel generator applied in island area. FESS is considered as a permanent magnetic synchronous machine connected to flywheel because of its efficiency. The controller of FESS is composed of AC/DC/AC back-to-back converter. The AC/DC converter is designed to charge/discharge according to the frequency variation and the DC/AC converter to operate to keep the DC bus voltage constant. The proposed modeling and controller design method of FESS was applied to hybrid generation system with wind turbine and diesel generator. The unstable operation problem owing to wind variations was solved through simulation results.

본 논문은 도서지역에서 운용되고 있는 풍력-디젤 하이브리드 발전시스템의 풍속변화 등으로 인한 주파수변동 문제를 해결할 수 있는 플라이휘일 저장장치의 모델링 및 제어기 설계 방법을 제안하였다. 플라이휘일 저장장치는 효율측면에서 유리한 영구자석 동기기형 플라이휘일로 선정하여 모델링하였고, 주파수보상 제어기는 AC/DC/AC 양방향컨버터로 구성하되 동기기측 컨버터는 연계계통의 주파수변동에 대하여 충방전운전을 하도록 하고, 계통측 컨버터는 직류버스전압 일정제어를 통하여 출력을 하도록 설계하였다. 제안된 모델링 및 제어기 설계방법을 풍력-디젤 하이브리드 독립운전계통에 적용한 결과 풍속변화에 따른 주파수변동을 적정범위내로 유지할 수 있었다.

Keywords

References

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