电动汽车电气驱动系统的新技术

New Technology of Propulsion Drive System of Electric Vehicle

电气驱动系统是电动汽车的关键部件。对于高性能的电动汽车 ,电气驱动系统必须效率高、结构紧凑、体积小、重量轻和可靠性高。本文介绍电动汽车电气驱动系统的最新发展 ,重点讨论效率最优控制。

Electric propulsion drive system is one of the key components of electric vehicles for high performance, the propulsion drive system should be such characteristics as high efficiency, compact, small, light, low cost and high reliability This paper introduces the some newest development of the propulsion drive systems of electric vehicles or hybrid electric vehicles, and emphatically discusses the applications of the new techniques such as on?line efficiency optimal control based on fuzzy logical theory, speed sensor?less direct torque control alternative current motor drive system fixed on the stator axis and high frequency alternative current pulse density modulation (PDM) technique with zero voltage switching in the electric vehicles or hybrid electric vehicles Some power electronics performance specifications and the test results are also described in the paper