电动汽车用高功率密度集成控制器研究

Research on High Power Density Integrated Controller for EV

不管是纯电动、混合动力还是燃料电池汽车,电机驱动系统需求都应该满足高功率密度、高效、高可靠性和低成本的要求,为了满足这些要求,电动汽车多采用永磁同步电机和高功率密度集成控制器。文章总结了中国自1996年以来电动汽车,特别是其电机驱动系统的发展,提出了高功率密度集成控制器的研发,重点阐述其控制器的性能设计、变工况母线支撑电容设计以及叠层母排设计。试验表明使用2个220μF膜电容并联的控制器能够驱动80 kW的电机,其功率体积比达到13.3 kW/L,系统最大效率达到92%。

For any electric vehicle（EV）,whether pure,hybrid or fuel cell,the requirements for its electric drive system can be summarized as high power density,high power efficiency,high reliability and low cost etc.In order to meet these requirements,permanent magnet motor and high power density inverter are used.In this article,electric vehicles＇ developments,especially EV drive＇s,in China since 1996 are summarized.The RD activity of a high power density inverter for EV drive is presented,which focuses on the performance design,capacitance design of bus support in the variable working conditions and laminated busbar design.The experiments show that the inverter with two 220uF film capacitors can drive 80 kW PM motor with power density of 13.3 kW/l and maximum system efficiency of 92%.