Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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SENSORLESS SPEED CONTROL OF INDUCTION MOTOR WITH SPEED ESTIMATOR

자속추정기에 의한 유도전동기 센서리스 속도제어

  • 김성환 (한국해양대학교 기관시스템공학부)
  • Published : 1999.07.01
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Abstract

Several methods of induction motor drives which used speed estimators instead of shaft encoders have been reported. However those speed sensorless systems with estimators employing stator voltates and currents usually deteriorates as the speed gets lower because it is difficult to calculate the accurate rotor flux under the influence of DC-offset and saturation of integrators. In this paper to calculate rotor flux at low speed the new rotor flux estimator which replaces integra-tors with two lag circuits is proposed. Simulation and experiment results confirm the validity of this control scheme.

Keywords

References

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