首页|Composite Braking Control Strategy for Electromechanical-hydraulic Vehicles
Composite Braking Control Strategy for Electromechanical-hydraulic Vehicles
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Short driving ranges and low braking energy re-covery efficiencies are two recognized technical bottlenecks to be overcome in electric vehicles.In this paper,a novel electromechanical-hydraulic coupling system is proposed and in-tegrated as a powertrain for electric vehicles,which can assist the electric vehicle to fully utilize its braking energy.The hydraulic regenerative braking force and electric regenerative braking force can provide all the braking needs using the medium and small braking intensities.Furthermore,an improved compound brake control strategy based on the braking force distribution is proposed and simulated.The results show that under the premise of ensuring braking stability,the electromechanical-hydraulic coupling driving electric vehicle can adapt to various working conditions with excellent energy-saving results.The hydraulic accumulator recovery efficiency is above 99％,and the state of charge consumption rate of the battery pack can be reduced by more than 9％.More importantly,the proposed hybrid power system can significantly improve the driving range and energy efficiency,as well as reduce the consumers'mileage anxiety in electric vehicles.
Braking control strategyelectric vehicleelectromechanical-hydraulic couplingenergy recoverystate of charge
Zewen Meng、Jichao Hong、Hongxin Zhang、Tiezhu Zhang、Xiaoming Xu、Qinghai Zhao、Jian Yang
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College of Mechanical and Electrical Engineering,Qingdao University,Qingdao 260071,China
Power Integration and Energy Storage Systems Engineering Technology Center(Qingdao),Qingdao 260071,China
School of Mechanical Engineering,University of Science and Technology Beijing,Beijing 100083,China
Shunde Graduate School of University of Science and Technology Beijing,Foshan 528000,China
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National Natural Science Foundation of ChinaMunicipal Livelihood Science and Technology Project of Qingdao
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