伴随发动机起动的混合动力模式切换控制

doi:10.19562/j.chinasae.qcgc.2019.012.002

Abstract

Abstract: Plug-in hybrid electric buses have two kinds of power sources. Switching between different power sources will lead to longitudinal impact, which will affect the power and comfort of the vehicle. Taking the coaxial parallel hybrid bus as the research object, the dynamic switching process from pure electric mode to hybrid drive mode is analyzed. Based on state space theory, the mode conversion process is divided into four sub-states, and the dynamic coordinated control strategy is designed. Taking the longitudinal impact and mode switching time of vehicle running as evaluation indexes, the proposed dynamic coordinated control strategy is verified by bench test and is compared with the traditional motor torque compensation strategy. The results show that the designed control strategy can effectively suppress the speed fluctuation, shorten the mode switching time, reduce the longitudinal impact, and improve the driving performance.

Key words: coaxial parallel hybrid system, mode transition, dynamic coupling, torque coordinated control

Yang Ye, Zhang Youtong, Shan Xiaoming. Research on Hybrid Mode Transition Control with Engine Start[J].Automotive Engineering, 2019, 41(12): 1356-1364.

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Research on Hybrid Mode Transition Control with Engine Start

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