Abstract:As transitional form between hybrid electric vehicles (HEV) and electric vehicles(EV), the plug-in hybrid electric vehicles (PHEV) can deal with complicated operating conditions of automobile for its characteristics of deep hybrid, therefore it has been popular in the new energy vehicles fields. In addition, energy management strategy as the main control logical of PHEV, its capbility determines the performance of PHEV. And on this point, a lot of related research literatures are produced. Based on the above situation, it makes comprehensive analyses of latest research progress and development trend of energy management strategies for PHEV, and comparing optimization performance and application potential in real world. Finally, the prospect for the developing trend of energy management strategies for PHEV is presented.Key words:plug-in hybrid electric vehicles;energy management strategy;control;optimization 0 前言 *
Abstract:Plug-in hybrid electric bus (PHEB) has become a hot spot for bus research due to its lower energy consumption and lower emissions, etc. For the complicated and transient driving conditions of city bus, how to minimize the energy consumption of the whole driving cycle by designing the real-time energy management strategy for PHEB is still a problem in the recent years. To solve this problem, an equivalent consumption minimization strategy (ECMS) based on particle swarm optimization (PSO) is proposed.The energy management strategy based on the optimization equivalent factor is proposed. Considering the engine frequently start-up problems at lower vehicle speed, the speed limits for engine start is introduced, and the equivalent factor and the speed of engine start of certain condition is offline optimized by PSO to obtain the PHEB application online real-time strategy. The simulation model of the vehicle is built by Matlab/Simulink. The presented method is verified by simulation and hardware in the loop (HIL) experiments.The results show that, the research strategy could achieve global optimization PHEB approximate energy management strategies under different initial SOC s , the vehicle fuel economy increases by 8.5% comparing with the rule-based strategy.Key words:plug-in hybrid electric bus;particle swarm optimization;global optimization;equivalent consumption minimization strategy;energy management 0 前言 *
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