Journal of Advanced Marine Engineering and Technology

  • 제28권4호
  • /
  • Pages.641-647
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  • 2004
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  • 2234-7925(pISSN)
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  • 2234-8352(eISSN)
한국마린엔지니어링학회 (The Korean Society of Marine Engineering)
권호 표지

전영역에서 안정된 유도전동기의 센서리스 속도제어

A Stable Sensorless Speed Control for Induction Motor in the Overall Range

  • 김종수 (한국해양대학교 해사산업연구소) ;
  • 김성환 (한국해양대학교 선박전자기계공학) ;
  • 오세진 (한국해양대학교 대학원 기관시스템공학과)
  • 발행 : 2004.05.01
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초록

By most sensorless speed control schemes for induction motor. the control performances in high speed range are good, but it is difficult to obtain satisfactory results in low speed region. This paper proposes a new method controlling the low and the high speed regions separately to attain the stable operation in the overall range. The current error compensation method, in which the controlled stator voltage is applied to the induction motor so that the error between stator currents of the numerical model and the actual motor can be forced to decay to zero as time proceeds. is used in the low speed region In the high speed region. the method with adaptive observer is utilized. This control strategy contains an adaptive state observer for flux estimation. The rotor speed can be calculated from the rotor flux and the motor currents. The experimental results indicate good speed and load responses from the very low speed range to the high, and also show accurate speed changing performance between the low and the high speed range.

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참고문헌

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