Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Rotor Time Constant Compensation of Vector Controlled Induction Motor Using Stator Current and Flux Error

고정자 전류와 자속의 오차를 이용한 벡터제어 유도전동기의 회전자 시정수 보상

  • 김우현 (경북대학교 전자전기공학부) ;
  • 박철우 (경북대학교 전자전기공학부) ;
  • 임성운 (경일대학교 제어계측공학과) ;
  • 권우현 (경북대학교 전자전기공학부)
  • Published : 2000.05.01
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Abstract

It is proposed that the rotor time constant and inductance are compensated at the same time in the indirect vector control method of an induction motor. The proposed scheme compensates the rotor time constant using the difference between the Q-axis real stator current and estimated current that is calculated from the terminal voltage and current, and compensates inductance by using the difference between the D-axis real stator flux and estimated stator flux in the synchronous rotating reference frame. Although the rotor time constant and inductance vary at once, the proposed method compensates the rotor time constant and inductance with accuracy. In addition to, two variables can be compensated not only at the steady state condition, but also at the transient state, where the torque varies in a rectangular pulse waveform. Therefore, the performance of vector control is greatly improved as verified by experiment.

Keywords

References

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