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

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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A Study on Speed Control by means of voltage·current model complex flux estimator

유도전동기의 전압·전류 모델 합성 자속 추정기에 의한 속도제어에 관한 연구

  • 황락훈 (세명대학교 전기공학과) ;
  • 나승권 (한국폴리텍대학 의용공학과) ;
  • 최성식 (세명대학교 전기공학과)
  • Received : 2012.08.10
  • Accepted : 2012.11.08
  • Published : 2012.11.30
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Abstract

This study uses the algorithm which estimates the magnetic flux using different models in the low speed driving area and the high speed driving area by the voltage-current model synthesis magnetic flux Estimator and, from this result, estimates the magnetic flux angle to achieve the stable speed control through all the areas from the low speed to the high speed drive. In particular, the current change and the magnetic flux change under variable load were estimated in real time in the low speed area and this made the control characteristic improved in the low speed area. According to this, even under variable load, the more stable simulation and experiment could have been completed using PI current controller and PI flux controller in all the areas. As a result, the outstanding speed control characteristic has been achieved.

본 논문에서는 유도전동기의 저속운전영역에서 고속운전영역에 이르기까지 모든 영역에 걸친 안정된 속도제어를 목적으로 전압 전류 모델 합성 자속 추정기를 통해 저속영역에서와 고속영역에서 각각 다른 모델에 의한 자속을 추정하고 이로부터 자속각을 추정하는 알고리즘을 사용한다. 특히 저속영역에서 부하가변시의 전류의 변화와 자속의 변화를 실시간으로 추정하여 저속영역에서의 제어특성을 향상시켜 부하 가변 시에도 전 영역에서 보다 안정된 비례적분 전류 제어기, 비례적분자속 제어기에 의한 시뮬레이션 및 실험을 실시한 결과 우수한 속도제어특성을 얻을 수 있었다.

Keywords

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