Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Study on an Adaptive Maximum Torque Per Amp Control Strategy for Induction Motor Drives

  • Kwon, Chun-Ki (Dept. of Medical Information Technology Engineering, Soonchunhyang University)
  • Received : 2012.01.28
  • Accepted : 2012.07.03
  • Published : 2013.01.02
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Abstract

Maximum Torque Per Amp (MTPA) control for induction motor drives seeks to achieve a desired torque with the minimum possible stator current. This is favorable in terms of inverter operation and nearly optimal in terms of motor efficiency. However, rotor resistance variation can cause significant performance degradation. This work demonstrates that existing MTPA controls perform sub-optimally as temperature varies. An adaptive MTPA control strategy is proposed that always achieves optimal performance without exhibiting hunting phenomenon regardless of rotor temperature. The proposed control is experimentally shown to accurately achieve the desired torque.

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References

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