Research on Regenerative Braking and Friction Braking Power Distribution Strategy of Wheel Hub Motor
In order to improve the share of regenerative braking and braking energy recovery in hub-motor e-lectric vehicles,a new braking force distribution strategy for composite braking system is proposed.First,the front and rear axle braking power distribution strategies under different conditions are proposed for the character-istics of hub motor regenerative braking and line-controlled friction braking,combined with the vehicle parame-ters and the braking performance requirements of the ECE regulations.Secondly,the braking force distribution strategy between regenerative braking and friction braking within the integrated braking device is proposed ac-cording to different braking conditions.Finally,the braking process under different working conditions and dif-ferent strengths is simulated in Matlab/Simulink software.The results show that the proposed strategy can fully utilize the advantages of regenerative braking,share part of the braking demand for friction braking,and the re-generative braking accounts for a higher percentage of the braking force in small intensity braking.
Hub motorBrake-by-wireRegenerative brakingBraking force distributionECE-laws
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