应用于储能系统的双向DC-DC变换器研究  

Study of Bidirectional DC-DC Converters Applied to Energy Storage System

作　　者：王冕[1] 田野[1] 李铁民[1,2] 陈国柱[1] 

机构地区：[1]浙江大学电气工程学院,杭州310027 [2]金日成综合大学自动化系,平壤999093

出　　处：《电工技术学报》2013年第8期66-71,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51177147);浙江省重点科技创新团队(2010R50021)资助项目

摘　　要：分布式能源的开发和应用日益广泛。本文采用了直流侧含有储能单元的交直流分布式电源(DG)统一模型,针对分布式电源大多具有间歇性、易波动的特点,利用直流侧储能单元平抑能量波动,以提高供电的稳定性和供电质量。储能单元通过两相交错并联Buck-Boost型双向DC/DC变换器接入直流母线,针对传统两相并联DC/DC电路易出现的电感电流纹波较大、两相间电流不均衡问题,提出了一种新的移相均流控制策略。最后搭建了5kW实验样机,通过实验验证了理论的正确性。Distributed energy has been widely developed and applied. Distributed generations（DGs） are mostly unstable electric sources, so a unified model in which energy storage systems are connected to the DC bus is proposed in this paper. Energy storage unit can stabilize energy fluctuation of DGs and improve power qualities. It is connected to DC bus through interleaved bidirectional DC/DC converter. In traditional occasions the inductor ripple of bidirectional DC/DC converters tend to be high and the inductor current of different phase are usually unbalanced. This paper proposes a novel phase-shifted current sharing control strategy to solve these problems. Experimental results are conducted to validate the effectiveness of the proposed strategy.

关 键 词：分布式电源 储能单元 双向DC—DC变换器 两相交错并联 移相均流控制 

分 类 号：TM46[电气工程—电器] TM61