摘要
针对增程式电动客车节油问题,设计并对比了三相不可控桥式整流和整流后直流升压两种发动机-发电机组(APU)结构,提出了电池组恒荷电状态(Stage of Charge,SOC)模糊控制、发动机目标转速分级控制的能量管理测试,在Matlab/Simulink环境中搭建了两种结构下的増程式动力系统仿真模型,并结合城市公交工况进行能量管理策略仿真分析。仿真结果表明,发动机-发电机组采用整流后直流升压结构和所提出的能量管理策略,能使发动机节油率提高8%,验证了结构方案的合理性和能量管理策略的有效性。
To improve fuel economy, two kinds of APU configurations were designed and compared by simulation. The first configuration contained a three-phase uncontrollable rectifier bridge while the second one added a DC/DC boost in the rear of the rectifier. Fuzzy logic based charge-sustaining strategy and multi-graded engine speed control were applied in the energy management. Two powertrain simulation models with different APU configurations were established in Matlab/Simulink and city bus driving cycle was used in the simulation. Confirmed by the simulation results, the APU structured with a DC/DC boost in the rear of the rectifier reduces 8% of fuel consumption compared with the one without a boost, which shows it is a more effective and reasonable configuration.
出处
《汽车工程学报》
2013年第6期440-446,共7页
Chinese Journal of Automotive Engineering
