摘要
系统分析了混合动力汽车用蓄电池的不足以及应用超级电容器的优势,研究了超级电容器与蓄电池构成复合电源的3种不同组成方式,指出将高功率密度的超级电容器与高能量密度的蓄电池通过功率DC/DC变换器匹配,使之既可以输出/吸收高倍率电流的冲击,又可以满足多次高倍率电流所需的高能量密度。实验与仿真结果表明,双向DC/DC变换器的并联结构具有较好的效果和实用性。
The shortage of storage battery and advantages of ultracapacitor are analyzed.Three main structures of ultracapacitor/battery hybrid system including directly connection,connection via inductance and power convertor are put forward and analyzed in experiments.The matching with high power density of ultracapacitor and high energy density of battery via power DC/DC convertor can absorb the striking of high rate current and satisfy high energy density needs for time after time high rate current.The experiments and simulations show that the connection via bidirectional DC/DC convertor has better performance and practicability.
出处
《电力电子技术》
CSCD
北大核心
2010年第5期75-77,共3页
Power Electronics
