풍력발전을 위한 이중여자 유도기의 센서리스 제어

  • 김용현 (제주대학교 전기공학과) ;
  • 김일환 (제주대학교 전기전자공학부)
  • Published : 2000.10.01

Abstract

In wind power generating system connected in power grid, the value of stator flux has almost constant because the stator side of doubly fed induction machine(DFIM) is connected to power grid. Using the stator and rotor current, it is possible to estimate the slip angle and rotor speed. A stator flux orientation scheme and rotor slip estimator are employed to achieve control of generating power in stator side. To verify the theoretical analysis, a 5-hp DFIM prototype system and PWM power converter are built. Results of computer simulation and experiment are presented to support the discussion.

이중여자 유도기를 계통선 연계형 풍력발전 시스템에 적용할 때, 고정자는 계통선에 그리고 회전자는 제어 시스템에 연결된다. 이때 고정자에는 일정전압과 주파수가 걸리기 때문에, 고정자측에 는 거의 일정한 고정자 자속값을 갖는다. 또한 고정자 자속을 기준으로 고정자 전류와 회전자 전류를 이용하여 슬립각을 추정하고, 이를 이용하여 고정자측에 출력되는 전력을 제어한다. 제안한 알고리즘의 타당성을 검증하기 위해 컴퓨터 시뮬레이션과 실험을 통하여 이를 입증한다.

Keywords

References

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