中文摘要：

为减弱脉动负载对蓄电池循环寿命的影响，设计了一种应用于脉动负载的半主动式蓄电池-超级电容器复合电源．将蓄电池组经过一个双向DC—DC功率变换器与超级电容器组并联，从而向脉动负载供电．复合电源系统的控制目标是：在负载脉动的情况下，使得蓄电池的输出电流几乎恒定，其幅值等于负载的平均电流，而超级电容器主要承担负载电流中的动态分量，从而延长蓄电池循环寿命．分别对半主动式和被动式蓄电池一超级容器复合电源在MATLAB7环境下进行建模和仿真．仿真结果表明，采用半主动式结构的复合电源相比于被动式结构，其蓄电池组的放电电流更平滑、放电过程得到了优化．

英文摘要：

To weaken the effect of pulse load on the cycle life of battery, a semi-active battery - ultracapacitor hybrid energy source was designed. The battery pack was connected with an ultracapacitor pack by a bothway DC-DC power converter and supplied power at pulse load. The control strategy of hybrid energy storage was that the battery supplied nearly constant current of average load current, while the ultracapacitor supplied the dynamic component to prolong battery cycle. The semi-active and passive battery-ultracapacitor hybrid system were modeled and simulated under MATLAB 7. The results show that the discharging current of battery pack of semi-active hybrid energy source is smoother than that of passive energy source, and the discharging process of the battery pack is optimized.