2016年第2期
文章编号：10094687(2016)02000205
车辆与动力技术 Vehicle & Power Technology
总第142期
基于小波变换的混合动力车辆功率分流策略分析
廖自力，刘春光，项宇
陈路明，
（装甲兵工程学院控制工程系，北京100072）
摘要：混合动力车辆通常具有两个或多个动力源，结构相对复杂，分流到各动力源的功率存在多种组合方式常规功率分流策略如峰值电源最大荷电状态策略、恒温器策略等仅作用于时域空间，依据功率幅值进行分流，当功率波动剧烈时，产生的高频功率分量会对动力电池的性能造成负面影响，为消除这种影响，提出了基于小波变换的功率分流策略，在时频域空间将需求功率分解为若干高频分量和低频分量，确定各动力源功率分流情况，最后利用RT-LAB建立的整车模型进行仿真试验，将仿真结果与基于恒温器策略得到的仿真结果进行比较，
验证基于小波变换的功率分流策略能更好地跟随功率变化，提高供电质量，延长电池寿命。关键调：混合动力车辆；功率分流策略；小波变换；恒温器策略
中图分类号：TM761
文献标识码：A
Analysis of Power Dividing Strategy for a Hybrid Electric Vehicle
BasedonWaveletTransform
CHEN Lu-ming，
LIAO Zi-li,
LIU Chun-guang,
XIANGYu
( Department of Control Engineering, Academy of Armored Force Engineering, Beijing 100072, China) Abstract: Hybrid vehicles usually have two or more power sources so there are a variety of the power dividing strategies. Conventional strategies usually distribute the power in the time domain according to its amplitude, such as the strategy of the peak power with biggest SOC and the themostat strategy. When the frenquency of the power fluctuation is high, its high frequency component of the power will have a negative effect on the batteries or other power sources. In order to cope with this problem, a power dividing strategy is proposed based on the wavelet transform. In the time frequency domain, the needed power is decomposed into a number of high frequency and low frequency components, and distributed to each power source with a confirmed proportion. The vehicle model is tested in RT-LAB. The simulation results are compared with the outcomes from the thermostat strategy. The conclusion is that the studied strategy has advantages in following the power change well, improving the quality of power supply and extending the battery life.
Key words: hybrid electric vehicle; power dividing strategy; wavelet transform; thermostat strategy
随着科学技术的发展和世界新军事变革的推进，武器装备成为战斗力生成的关键因素，传统战斗车辆受限于动力结构和传动方式等，难以满足火力、机动和防护性能提升带来的日益增长的载荷需求(1]，新型储能技术的逐步成熟，为混合动力车
收稿日期：2015-117
基金项目：军队预先研究项目（40401010101）
辆的发展提供了重要支撑．为提升车辆动力系统对载荷的跟随能力，多动力源的综合电力系统成为新型混合动力车辆的发展方向(2)
车辆综合电力系统的供电品质不仅取决于各动力源的拓扑结构，还与功率分流策略有密切关系，
作者简介：陈路明（1991-），男，硕士，研究方向为车辆综合电力系统能量管理、万方数据