轻度混合控制策略下混合动力电动汽车能量优化与仿真  

Energy Optimization and Simulation of HEV Using Mild Hybrid Control Strategy

作　　者：邓元望[1] 龚金科[1] 王耀南[2] 

机构地区：[1]湖南大学先进动力总成技术研究中心,湖南长沙410082 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《中国公路学报》2008年第6期114-120,共7页China Journal of Highway and Transport

基　　金：湖南省"十五"科技计划重大专项项目(02GKY1003);湖南省自然科学基金重点项目(06JJ20018)

摘　　要：为了优化轻度混合控制策略下的CFA6470混合动力电动汽车能量总成控制系统,设计了能量总成控制器,并将其分成5个模块;分析了节气门开启角与车辆行驶挡位的优化方法,轻度混合时的能量分配策略;提出了基于能量守恒原理的电池组荷电状态估计方法,并根据ECE-EUDC工况,在2种不同的期望车速下对设计的控制系统进行了仿真。仿真结果表明:在发动机的期望工况下,所设计的能量总成控制系统能够实现能量在发动机、驱动电机以及电池组之间的合理分配,电池组的荷电状态变化规律与车辆行驶状态相符合。In order to optimize the energy assembly control system of CFA6470 hybrid electric vehicle （HEV） using the mild hybrid control strategy was studied. The energy controller was designed and was divided into five modules, and optimal methods of the throttle angle and vehicle shift as well as the energy assignment strategy were studied too. The method deciding the state of charge of the battery pack was presented with the energy conservation principle. According to ECE-EUDC cycles, simulations were done for the system with two different anticipant vehicle speeds. The results indicate that in the CFA6470 HEV, when the engine operates with the demanded cycles, the energy can be assigned as the scheduled goal among engine, motor and battery pack according to the mild hybrid control strategy and the state of charge of battery pack is same changed with the vehicle running state.

关 键 词：汽车工程 混合动力电动汽车 仿真 能量总成控制系统 轻度混合控制策略 

分 类 号：U469.72[机械工程—车辆工程]