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Speed sensorless adaptive rotor flux orientation control of induction motor drive
  • Ji juan,
  • Yanliang Cui,
  • Kaiyun Wang
Ji juan
Lanzhou Jiaotong University

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Yanliang Cui
Lanzhou Jiaotong University
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Kaiyun Wang
Southwest Jiaotong University
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This article investigates a sensorless indirect rotor flux orientation control (IRFOC) for induction motors based on stator resistance and slip angular speed deviation. An estimation method of rotor flux and speed based only on stator three-phase current and voltage measurements is proposed. An adaptive approximation method of voltage model and current model with stator voltage compensation method is considered to estimate the rotor flux and to accurately locate the flux angle in the case of stator resistance deviation. In addition, the stator current deviation due to the slip angle speed deviation is taken into account in the speed estimation, and the rotor speed indirect estimator (RSIE) is designed, which can adjust the slip angle speed in real time according to the changes of current and flux to reduce the dependence on the accurate model and parameters. Alternatively, Simulink simulation is utilized to verify the practicality and reliability of the proposed induction motor rotor flux and speed estimator method.