Journal of international Conference on Electrical Machines and Systems

Journal of International Conference on Electrical Machines and Systems (대한전기학회 분과)
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Simple Equivalent Circuit for Efficiency Calculation of Brushless DC Motors

  • Ishikawa, Takeo (Division of Electronics and Informatics, Faculty of Science and Technology, Gunma University) ;
  • Tsuji, Takuma (Division of Electronics and Informatics, Faculty of Science and Technology) ;
  • Hashimoto, Seiji (Division of Electronics and Informatics, Faculty of Science and Technology) ;
  • Kurita, Nobuyuki (Division of Electronics and Informatics, Faculty of Science and Technology)
  • Received : 2013.10.30
  • Accepted : 2013.12.01
  • Published : 2014.03.01
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Abstract

This paper shows a calculation method of several types of loss and the efficiency of brushless DC motors coupled with a load system by using a simple equivalent circuit, in which copper loss, eddy current loss, hysteresis loss, friction loss, viscous loss, and inverter loss are taken into account. We clarify each loss and motor efficiency at different motor speeds and different output torques by using the Microsoft-Excel. Moreover, the calculated results are in good agreement with the measured ones.

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References

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