中文摘要：

基于微电网中储能系统,设计了一种新的蓄电池充电电路,介绍了蓄电池充电电路的特点及控制策略.详细介绍了全钒液流电池（VRB）的工作原理,根据全钒液流电池的特性及全钒液流电池的一阶阻容模型,运用小信号模型分析法和状态空间平均法建立了蓄电池恒流充电时的数学模型,提出了一种基于蓄电池一阶阻容模型的DC-DC双向变换电路的建模方法,然后利用数字控制系统参数优化的方法,设计了DC-DC双向变换电路的数字控制器.最后,基于DC-DC双向变换器的电池充放电控制策略及全钒液流电池的仿真模型,利用MATLAB搭建了系统的仿真电路,并搭建了2kW蓄电池充电电路的实验样机,仿真和实验结果表明,设计的蓄电池充电电路及其控制策略是可行的.

英文摘要：

In order to sustainably use energy and to protect the environment, the renewable energy is developed and used around the globe. However, what problems will arise with the increasing portion of renewable energy connect- ed to grid？ How will the future energy landscape change？ Countries are still exploring in this field. This paper is based on the solutions of Fuji Electric, introduces new energy development and utilization, micro-grid, smart grid, smart communities, energy management, communication networks, power stability, the balance of supply and de- mand and other aspects of some of the vision of the company, and tries to explore the trend of the future of power e- lectronics.