基于联合算法的军用车辆混合动力系统能量管理

摘要

针对一种串联式军用车辆混合动力系统中各动力源特性和负载特点，制定了多算法联合的能量管理策略。利用小波变换算法分离负载需求中的高频分量和低频分量，分别分配给超级电容和具有较低输出截止频率的动力源，实现负载频率特性与动力源输出特性匹配。采用模糊控制对负载需求低频分量在电池及发动机-发电机组之间进行二次优化分配。由部件级控制算法完成各动力源的输出和工作点控制，最终实现对混合动力系统这类多领域、非线性时变系统的多目标优化控制。构建一种具有高置信度的分布式硬件在环仿真平台对能量管理策略进行仿真验证，结果表明，所提的能量管理方法具有控制效果好、实时性好等优点，达到了预期的控制目标，可应用于军用电传动车辆能量管理控制。%A power manage strategy based on joint multi algorithm was established according to a kind of series hybrid system′s power source feature and load characteristic.The wavelet transform algorithm was used to divide the high frequency value and the low frequency value of the load requirement.The value is distributed to super capacity and the sources which have a low output cutoff frequency,and it realizes the matching of load feature and power source output.The fuzzy controller was used to realize optimal twice allocates the low frequency value between battery and engine-generator group.The output and the work section of each component were controlled by the component control algorithm.Finally,the designed ener-gy management strategy achieved the multi targets′optimal control of the multi areas and nonlinear time variety hybrid system.A high-fidelity distributional HIL platform was established to prove the control strat-egy.The result shows that the strategy is well-performed and has high instantaneity,so that it is suitable for actual vehicles.