插电式混合动力汽车电驱动系统过压抑制最优控制

在复杂的行驶工况下，插电式混合动力汽车经常处于启停状态，大电流脉冲对汽车电驱动系统高压总线带来巨大冲击，造成高压总线峰值电压不断上升，从而极易造成车辆安全事故。针对插电式混合动力汽车电驱动系统高压总线过压问题，提出一种基于Bang-Bang控制策略来抑制高压总线上的峰值电压，在汽车电驱动系统过压保护装置的实验环境中验证采用的Bang Bang控制策略的准确性，实验结果表明，采用Bang-Bang控制策略能够有效地抑制高压总线过压，保证混合动力汽车的行驶安全。

Overvoltage suppression optimal control for electric drive system of plug-in hybrid electric vehicle

Plug-in hybrid electric vehicles are often in start-up and stop state under complex driving conditions. High current pulse has a great impact on the high-voltage bus of automotive electric drive system, resulting in the rising peak voltage of high-voltage bus, which is very easy to cause vehicle safety accidents. Aiming at the problem of high voltage bus overvoltage in plug-in hybrid electric vehicle electric drive system, a Bang-Bang control strategy is proposed to suppress the peak voltage on the high voltage bus. The accuracy of the control strategy is verified in the experimental environment of the overvoltage protection device of the electric drive system. The experimental results show that the Bang-Bang control strategy is adopted. It can effectively suppress high voltage bus overvoltage and ensure the safety of hybrid electric vehicles.