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

The Korean Institute of Power Electronics (전력전자학회)
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Speed Sensorless Vector Control of Induction Machine Using an Improves Speed Estimation Algorithm

개선된 속도 추정 알고리즘을 이용한 유도전동기의 속도 센서리스 벡터 제어

  • Published : 1997.12.01
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Abstract

For high performance ac drives, the speed sensorless vector control and the stator flux orientation concept have received increasing attention. This paper describes a speed and flux sensorless vector-controlled induction machine(IM) drive based on the stator flux-oriented control. To improve the accuracy and operating range, the control system employs the previously presented speed and flux estimation methods, and then we present a developed method of estimating the speed of IM. In the proposed method all differential and integral terms have been eliminated by giving a very fast, low-cost, effective and practical alternative to the methods currently available. The effectiveness of the proposed method is verified by simulations and experimental results.

본 논문에서는 유도전동기의 속도 센서리스 벡터 제어에서의 운전특성 개선을 위하여 최근에 제시된 상태 방정식을 이용한 속도 추정 알고리즘을 살펴보고 이 방식이 갖고 있는 문제점들을 해결할 수 있는 새로운 추정 방법을 제안한다. 또한 폐루프 적분 방식의 고정자 자속 추정 알고리즘을 도입하여 고정자 자속 추정의 정확도를 높였다. 특히, 모든 미분항과 적분항들을 등가의 표현식을 통해 나타내어 실제 구현에 있어서 빠른 응답 특성과 잡음에 대한 안정성을 높였다. 시뮬레이션과 실험을 통하여 본 논문에서 제안한 속도 추정기의 타당성을 입증하였다.

Keywords

References

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