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汽车安全与节能学报

汽车安全与节能学报 ›› 2013, Vol. 4 ›› Issue (1): 87-92.DOI: 10.3969/j.issn.1674-8484.2013.01.013

• 汽车节能与环保 • 上一篇    

两种控制策略下电动汽车逆变器功率损耗的近似计算

朱 元1，李根生2 ，吴志红1，田光宇3   

  1. 1. 同济大学 中德学院，上海 200092 ； 2. 河南科技大学 车辆与动力工程学院，洛阳 471003 ；
    3. 清华大学 汽车安全与节能国家重点实验室，北京 100084
  • 收稿日期:2013-01-30 出版日期:2013-03-25 发布日期:2013-03-27
  • 通讯作者: 朱元（1976—），男（汉），江苏，副教授。E-mail: yuan.zhu@tongji.edu.cn E-mail:E-mail: yuan.zhu@tongji.edu.cn
  • 作者简介:朱元（1976—），男（汉），江苏，副教授。E-mail: yuan.zhu@tongji.edu.cn
  • 基金资助:

    国家“八六三”高技术研究发展计划项目（2011AA11A290）

Approximate calculation of electric-vehicle inverter power-loss in
two control strategies

ZHU Yuan1, LI Gensheng2, WU Zhihong1, TIAN Guangyu3   

  1. 1. Sino-German School for Postgraduate Studies, Tongji University, Shanghai 200092, China;
    2. Vehicle and Power Engineering Institute, Henan University of Science and Technology, Luoyang 471003, China
    3. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
  • Received:2013-01-30 Online:2013-03-25 Published:2013-03-27

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摘要： 为了选择电动汽车永磁同步电机功率模块，设计散热装置，并提高其驱动系统的效率，提出
了一种计算逆变器功率损耗的近似方法。针对驱动系统中常用的对空间矢量脉冲调制(SVPWM)，根据
绝缘栅双极型晶体管(IGBT) 的特性及参数，积分计算了SVPWM 中不同扇区的功率损耗。比较了在d
轴电枢电流为零时和最大转矩电流比的两种控制策略下的逆变器功率损耗。结果表明：两者相比之下，
在最大转矩电流比控制策略下，逆变器的功率损耗较小，从而逆变器散热器温升也较低。

关键词: 电动汽车, 永磁同步电机, 逆变器, 近似计算, 空间矢量脉冲调制（SVPWM）, 功率损耗, 驱动
系统效率

Abstract: An approximation method for calculating inverter power loss was proposed to guide selecting power
module and design heat sink with higher efficiency of permanent magnet synchronous motors for space vector
pulse width modulations (SVPWM) which are widely used in the electric vehicle drive system. Power losses in
different vector sectors were calculated using this method, and then compared according to the characteristics
and parameters of insulated gate bipolar transistors (IGBTs) for two drive-system control-strategies of
permanent magnet synchronous motors. For one control strategy, the d-axis armature current is zero (), and the
other is with the maximum torque per Ampere (MTPA). The results show that the total power loss of the inverter
under the MTPA control strategy is smaller than that for the other control strategy, thereby resulting in lower
temperature rise of inverter heat sink.

Key words: electric vehicles, permanent magnet synchronous motors, inverters, approximate calculation,
space vector pulse width modulation (SVPWM), power loss, efficiency of drive system

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