Abstract
The vehicle will generate an amount of current while the electric vehicle just starting to regeneratively brake. In order to avoid the impact of high current on the traction battery, a novel electrohydraulic hybrid electric vehicle has been proposed. The main power source is supplied by the electric drive system, and the hydraulic system performs the auxiliary drive system that fully exerts the advantages of the electric drive system and the hydraulic drive system. A proper regenerative braking control strategy is presented, and the control parameters are determined by the fuzzy optimization algorithm. The simulation analysis built the model through the united simulation of AMESim and MATLAB/Simulink. The results illustrated that the optimized control strategy can reduce battery consumption by 1.22% under NEDC-operating conditions.
Highlights
Under the trend of environmental protection and energy crisis, the research and development of new-type energy vehicles strike at the automotive industry
Regenerative braking technology is a crucial element for new energy vehicles that are employed the principle of motor fourquadrant operation to recover braking energy. e recovered energy will be recycled and reused to increase the driving displacement of the vehicle
Liu et al [1] established a mathematical model for the composite braking of hydraulic hybrid electric vehicles and proposed a regenerative braking control strategy. e results showed that it had a strong ability to recover braking energy
Summary
Under the trend of environmental protection and energy crisis, the research and development of new-type energy vehicles strike at the automotive industry. Liu et al [1] established a mathematical model for the composite braking of hydraulic hybrid electric vehicles and proposed a regenerative braking control strategy. Ko et al [7] developed a hybrid vehicle braking system based on automatic transmission and proposed a regenerative braking coordinated control algorithm. Yang et al [8] proposed a new type of electrohydraulic hybrid power transmission system with hydraulic pressure and applied it to pure electric vehicle. E simulation results demonstrated that the proposed algorithm can significantly improve the vehicle’s braking performance and hybrid braking control accuracy. Ko et al [15] proposed an effective regenerative braking coordinated control algorithm to improve the energy recovery rate when the wheels are unlocked. Is paper will focus on regenerative braking, propose a control strategy, optimize the fuzzy rules.
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