The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Rotor Resistance Estimation Using Slip Angular Velocity In Vector-Controlled Induction Motor

벡터제어 유도전동기의 슬립 각속도를 이용한 회전자 저항 추정

  • Park, Hyunsu (HYUNDAI Welding Co.) ;
  • Jo, Gwon-Jae (Dept. of Electrical Engineering, Kyungpook National University) ;
  • Choi, Jong-Woo (Dept. of Electrical Engineering, College of IT Engineering, Kyungpook National University)
  • Received : 2017.10.11
  • Accepted : 2018.09.17
  • Published : 2018.10.01
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Abstract

Accurate tuning of parameter is very important in vector-controlled induction motor. Among the parameters of induction motor, detuning of rotor resistance used in controller design deteriorates drive performance. This paper presents a novel rotor resistance estimation strategy using slip angular velocity in vector-controlled induction motor drives. The slip angular velocity can be calculated by two methods. Firstly, it can be induced from the rotor voltage equation. Secondly, it can be induced from the difference between synchronous angular velocity and rotor angular velocity. The first method includes the rotor resistance, while the second method dose not include this parameter. From this fact, the rotor resistance can be identified by comparing the slip angular velocities in the two methods. In the tuned states of the rotor resistance, performances of flux estimator and speed drive are discussed. The simulation and experimental results are given to verify the validity of the proposed method in various situations.

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References

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