高效燃料电池发电系统前级DC/DC变换器  

Research on High Efficiency DC/DC Converter in Grid-connected Fuel Cell Distributed Power System

作　　者：吴屏[1] 朱选才[1] 徐德鸿[1] 

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《电力电子技术》2007年第9期10-11,38,共3页Power Electronics

摘　　要：燃料电池产生的直流电能随负载变化很大,为了在用户端得到稳定可靠的电能,必须加入功率调节环节。采用移相全桥ZVS DC/DC变换器作为一个5kW燃料电池分布式并网发电系统的前级变换器。介绍了主要的设计思路,然后以提高DC/DC变换器的效率为目的,进行了损耗分析。最后,在实验样机上验证了理论分析和设计的正确性。The DC voltage generated by fuel cell changes dramatically with the variable loads.To obtain the steady and reliable DC voltage, Power Control Unit （PCU） should be used.The voltage-fed full bridge Phased-shifted ZVS DC/DC converter was chose as the front-end DC/DC converter in fuel cell power system.The main design consideration is proposed, and loss dissipation is calculated.Finally, the experimental results on 5kW prototype validate the analysis mentioned above.

关 键 词：燃料电池 变换器/损耗分析 

分 类 号：TM911.4[电气工程—电力电子与电力传动]