Influence of Bus Voltage on Motor Torque and Efficiency in Fuel Cell Hybrid Performance

In order to evaluate the influence of bus voltage on motor torque and efficiency, bench experiments were designed on a dynamic dynamometer. The torque and efficiency of 3-phase asynchronous induction motor were measured with the bus voltage charging between 400 V and 455 V. Results show that: 1) the motor efficiency is mainly affected by the bus voltage in low-efficiency area, actual motor torque has an average delay time of 0.5 sec compared to the target torque command; and 2) actual torque is lower than target torque in high-bus voltage and high-motor speed range due to self-protection of the motor controller. Results of a typical Chinese city bus cycle testing show that the working points are mainly distributed in the high efficiency area which is affected by bus voltage slightly. As a result, the influence of bus voltage on motor efficiency could be ignored in city bus cycle analysis.

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  • Authors:
    • Xu, Liangfei
    • Cao, Guijun
    • Yang, Fuyuan
    • Li, Jianqiu
    • Ouyang, Minggao
  • Publication Date: 2009-6


  • English

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  • Accession Number: 01149311
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 28 2010 6:46PM