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Sensorless Stator Field-Oriented Controlled IM Drive at Low Speed with Estimator

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  • Wen-Cheng Pu
  • Yung-Chang Luo
  • Po-Yan Chu

Abstract

This paper pertains to a technique of a sensorless indirect stator field-oriented induction motor control, which prevents the accumulative errors incurred by the integrator and the problem relating to the stability of the control system caused by the stator resistance susceptible to temperature variations while conducting the flux estimation directly and computing the synchronous rotary speed. The research adds an adaptive flux observer to estimate the speed of the rotor and uses the fixed trace algorithm (FTA) to execute an online estimation of the slip difference, thereby improving the system of stability under the low rotary speed at regenerating mode and the influence of the rotor resistance on the slip angle. Finally, the paper conducts simulations by Simulink of MATLAB and practices to verify the correctness of the result the paper presents.

Suggested Citation

  • Wen-Cheng Pu & Yung-Chang Luo & Po-Yan Chu, 2014. "Sensorless Stator Field-Oriented Controlled IM Drive at Low Speed with Estimator," Mathematical Problems in Engineering, Hindawi, vol. 2014, pages 1-13, June.
    • Handle: RePEc:hin:jnlmpe:676202
    DOI: 10.1155/2014/676202
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