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Article Navigation> JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY> 2020> 29(3): 294-302
Wei Wang, Qiang Song, Yiting Li, Mukhtiar Ahmad. Improved Efficiency Test Method for the Motor Controller with SiC MOSFETs[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2020, 29(3): 294-302. doi: 10.15918/j.jbit1004-0579.19121
Citation: Wei Wang, Qiang Song, Yiting Li, Mukhtiar Ahmad. Improved Efficiency Test Method for the Motor Controller with SiC MOSFETs[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2020, 29(3): 294-302.doi:10.15918/j.jbit1004-0579.19121
shu

Improved Efficiency Test Method for the Motor Controller with SiC MOSFETs

doi:10.15918/j.jbit1004-0579.19121
  • 1.

    School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China

  • 2.

    Collaborative Innovation Center for Electric Vehicles, Beijing 100081, China

Funds:National Key Research and Development Program of China (2016YFB0100605)
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  • Corresponding author:associate professor E-mail:songqiang@bit.edu.cn
  • Received Date:2019-12-17
  • Publish Date:2020-09-30
    Abstract
  • The traditional measurement method was inaccurate to evaluate the motor controller efficiency, which the measurement efficiency value could be more than 100% in practical testing experiments. To deal with this issue, an improved electrical measurement method for the motor controller efficiency is proposed in this paper, which is established by analyzing the power loss distribution and phase currents of the motor controller. It is demonstrated that the SiC MOSFET chips are the main power loss devices in the motor controller, accounting for more than 93.1% of the total power loss. The accuracy of the proposed method is compared with the traditional method in simulation. It shows that the test error of the efficiency obtained by the traditional method fluctuates on a large scale, which varied from 0.094% to 1.911%. Compared with the traditional method, the test error of the proposed method appears to be less than 0.083%, which provides significant guidance for the motor controller efficiency test and design.
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    • References (16)
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