KIEE International Transaction on Electrical Machinery and Energy Conversion Systems

The Korean Institute of Electrical Engineers (대한전기학회)
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A Commutation Torque Ripple Reduction for Brushless DC Motor Drives

  • Won, Chang-hee (Mechatronics Center, Samsung Electrinics Co.) ;
  • Song, Joong-Ho (Department of Electrical Engineering, Seoul National University of Technology) ;
  • Ick Choy (Korea Institute of Science and Technology)
  • Published : 2002.04.01
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Abstract

This paper presents a comprehensive study on reducing commutation torque ripples generated in brushless DC motor drives with only a single do-link current sensor provided. In such drives, commutation torque ripple suppression techniques that are practically effective in low speed as well as high speed regions are scarcely found. The commutation compensation technique proposed here is based on a strategy that the current slopes of the incoming and the outgoing phases during the commutation interval can be equalized by a proper duty-ratio control. Being directly linked with deadbeat current control scheme, the proposed control method accomplishes suppression of the spikes and dips superimposed on the current and torque responses during the commutation intervals of the inverter. Effectiveness of the proposed control method is verified through simulations and experiments.

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References

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