Dynamic coordinated control of P2.5 plug-in hybrid configuration from pure electric to engine mode switching process considering driver's intention
A study was conducted on the dynamic coordinated control strategy of dual power sources was built with a Double Clutch Transmission(DCT)during the mode switching process,and with a system model for simulating and analyzing the control effect to ensure the smoothness of the transition from pure electric drive mode to engine drive mode in the P2.5 Plug in Hybrid Power System(PHPS).Divided the P2.5-PHPS pure electric to engine drive mode switching process into different stages and established a dynamic model for the multi-stage mode switching process of the system.Taking advantage of the fast torque response of the P2.5 drive motor,compensating for the fluctuations caused by the lagging torque response of the engine and clutch,and combining with the driver's operating intention,developing dynamic coordinated control strategies for the engine,motor,and clutch in each stage of the mode switching process.Built a system model for simulation analysis.The results show that during the transition from pure electric to engine mode,the maximum longitudinal impact of the vehicle does not exceed 5 m/s3,and the clutch slip and wear power is controlled within 3 kJ,which meet the smoothness requirements.
plug in hybrid electric system(PHPS)P2.5 configuration hybrid systemdual clutch transmissiondynamic coordination control(DCT)mode switching control
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