纯电动汽车的再生制动力分配策略研究

于德亮; 任玉龙; 刘冬; 孙浩

doi:10.13433/j.cnki.1003-8728.20180150

纯电动汽车的再生制动力分配策略研究

doi: 10.13433/j.cnki.1003-8728.20180150

哈尔滨理工大学电气与电子工程学院, 哈尔滨 150001

基金项目:

中国博士后基金项目 2014M561365

龙江省普通本科高等学校青年创新人才培养计划项目 UNPYSCT-2017097

详细信息

作者简介:
于德亮(1982-), 讲师, 博士, 研究方向为新能源汽车驱动控制系统研究, yudeliang1032@163.com

中图分类号: U469.72
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- 文章访问数: 399
- HTML全文浏览量: 136
- PDF下载量: 30
- 被引次数: 0
出版历程
- 收稿日期: 2018-03-08
- 刊出日期: 2019-02-05

Study on Regenerative Braking Force Distribution Strategy for Pure Electric Vehicle

School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150001, China

摘要

摘要: 针对电动汽车在低附着路面的驾驶稳定性的问题进行研究。因为汽车在冰雪路面制动时，大多数制动力分配方案以再生制动为主要制动力，此时很有可能发生抱死，从而发生汽车驾驶稳定性下降。本文中提出了一种在制动力分配上加入滑移率的控制方法，该方法以纯电动汽车为模型，设计出以汽车滑移率为控制对象的滑膜控制器。该控制方法在改进再生制动力分配策略上，特别在小制动强度时，电动汽车驱动轴有趋于抱死的情况立即减少再生制动力，使电动汽车恢复原有的稳定性。仿真结果表明：在强度恒定的制动工况下，电动汽车模型具有良好的驾驶稳定性，电动汽车模型在需要频繁制动的城市路况下，能量回收率提升了4.1%。
- 再生制动 /
- 滑移率 /
- 滑膜 /
- 稳定性
Abstract: The electric vehicle's stability where adhesion coefficient is low was studied. Wheels were likely to looked during the vehicle were braking on icy and snowy pavement, because the major of braking force was regenerative braking force this moment. The resulting was the deterioration of its stability. Based on the pure electric vehicle mode, the braking force strategy of inputting wheel slip ratio is proposed in this paper. A controller with sliding mode control was designed for controlling slip ratio. This control method was used to improve the regenerative braking force distribution strategy. Especially with being small braking strength, it will immediately reduce the regeneration power when slip rate of vehicle exceeded the prescribed slip rate, restored the electric vehicles to its original stability. Then the final simulation results show that the electric vehicle model that used sliding mode controller has good driving stability with braking condition of constant strength, and the braking energy recovery rate is increased by 4.1% in frequent braking conditions.
- regenerative braking /
- wheel slip ratio /
- sliding mode control /
- stability

HTML全文

图 1 模糊控制策略

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图 2 改进型Ⅰ制动力分配策略

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图 3 前、后轮制动力分配曲线

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图 4 改进型Ⅱ制动力分配结构图

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图 5 CYC_UDDS行驶工况

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图 6 CYC_UDDS循环行驶工况SOC曲线

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图 7 CYC_BUSKTE行驶工况

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图 8 低附着路面下再生制动力曲线

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图 9 低附着路面下滑移率曲线

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表 1 CYC_UDDS工况仿真结果

策略	整车消耗能量/kJ	制动总能/kJ	回收能量/kJ	制动能量回收率/%	有效能量回收率/%
ADVISOR策略	6 866	1 697	429	25.2	6.2
模糊控制策略	6 860	1 697	552	32.5	8.0
滑移率控制策略	6 831	1 697	499	29.4	7.3

下载: 导出CSV

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