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Regenerative Braking Cooperative Control of Hybrid Electric Vehicle Based on System Efficiency Optimization
Technical Paper
2019-01-5089
ISSN: 0148-7191, e-ISSN: 2688-3627
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Automotive Technical Papers
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English
Abstract
In order to improve the performance of electro-hydraulic composite braking system of hybrid electric vehicle (HEV), a new type of plug-in HEV with dual motor was taken as the research object. The model of motor loss was built to achieve maximum motor efficiency, and the hydraulic braking system model, which can dynamically control pressure, was built. Based on the optimization of a motor’s continuously variable transmission (CVT) joint efficiency, the real-time optimal allocation strategy based on threshold method and cooperative control strategy of the electro-hydraulic composite braking system were brought out to recover most of the regenerative energy under the premise of ensuring safety. The model was built to verify the performance by AMESim-Simulink. The results show that the control strategy can take the advantages of dual-motor braking recovery system, increase braking energy recovery rate, effectively improve the braking safety and ride comfort of the vehicle, and reduce braking force fluctuation.
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Yang, Y., Chen, J., Luo, C., and Tang, Q., "Regenerative Braking Cooperative Control of Hybrid Electric Vehicle Based on System Efficiency Optimization," SAE Technical Paper 2019-01-5089, 2019, https://doi.org/10.4271/2019-01-5089.Data Sets - Support Documents
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