关键词: 增程式, 混合动力洗扫车, 模糊转速PID , 电池下垂控制, 能量管理

Abstract: Aiming at the problems of poor emissions, high noise and serious pollution of the traditional dual-engine washing vehicles, an energy management strategy of steady-state distribution and dynamic coordination was put forward by using the extended-program hybrid power-sweeping vehicle power systems. Through the division of the working modes, a dynamic coordinated energy management method was designed based on engine fuzzy speed PID+ battery droop control. Taking the optimal fuel consumption as the control target, the balances of charges and discharges of the battery were maintained by controlling the engine power outputs and suppressing the fluctuations of charge-discharge powers, and finally the best fuel economy of the sweeping vehicles was achieved. Through simulation analysis, the results show that compared with the traditional dual-engine sanitation vehicles, the engine speed control is stable, the fuel-saving rate of the transition mode reaches 17.7%, and the fuel-saving rate of the sweeping mode reaches 37.1%, which verify the correctness of the control strategy.

Key words: extended-program； hybrid cleaning vehicle, fuzzy speed PID, battery droop control, energy management