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针对并联式混合动力电动汽车的能量控制问题进行了研究,提出了一种多模式能量管理策略。建立了整车模型,以负载力矩、电池荷电状态(SOC)和车速作为控制依据设计了多个工作模式间的切换逻辑,将模式切换状态作为控制变量引入到力矩分配算法中,实现了多工况下对发动机与电机的优化控制。结合US06、UDDS和EUDC等工况进行了Simulink系统仿真,结果表明所提出的能量管理策略较传统功率跟随策略相比可以提高燃油经济性约1.91%,且对于不同的工况具有良好的普遍适用性;基于D2P系统构建了硬件在环仿真平台,采用真实的驾驶员输入设备和控制器进行实时仿真,进一步表明所提出的能量管理策略合理有效且算法具有良好的实时性。
Aiming at the energy control problem of parallel hybrid electric vehicle, a multi-mode energy management strategy is proposed. The vehicle model was established. Based on the load torque, battery state of charge (SOC) and vehicle speed, the switching logic between multiple operating modes was designed. The mode switching status was introduced into the torque distribution algorithm as the control variable, Optimal control of engine and motor under operating conditions. The Simulink system simulation based on the conditions of US06, UDDS and EUDC shows that the proposed energy management strategy can improve the fuel economy by about 1.91% compared with the traditional power following strategy and has good universal applicability for different working conditions Based on the D2P system, a hardware-in-the-loop simulation platform is built. Real-time simulation using real driver input device and controller further proves that the proposed energy management strategy is reasonable and effective and the algorithm has good real-time performance.