文档介绍：摘要
超级电容器是一种新型绿色储能器件，具有充放电速度快、功率密度大、循环寿命长、高低温性能好等储能优势，此外，还具有免维护、无污染等优点，在储能领域将具有广阔的前景。
本文设计了一种应用于发电网的超级电容器储能系统。首先分析了超级电容器的储能原理，研究了超级电容器的充放电特性，介绍了应用于超级电容器储能系统中的双向DC/DC变换器。对搭建的超级电容器储能系统的超级电容器组、主电路和控制电路进行了设计。由于超级电容器储能系统主要应用于解决电能的供需不平衡，所以超级电容器储能系统中的双向DC/DC变换器有两种工作模式:超级电容器组从光伏电池吸收能量储能时，双向DC/DC变换器工作于Buck电路模式;超级电容器组向负载释放能量时，双向DC/DC变换器工作于Boost电路模式。
最后对超级电容器储能系统的两种工作模式进行了仿真。仿真结果表明，通过对超级电容器储能系统中超级电容器组的设计和双向DC/DC变换器的闭环控制设计，超级电容器储能系统能够实现解决电能供需不平衡。
关键词：超级电容器；双向DC/DC变换器；储能；充放电；
Abstract
Super capacitor is a green energy storage devices, with fast charge and discharge, power density, long cycle life, high and low temperature performance and good storage advantages, in addition, also has a maintenance-free, pollution, etc., in the field of energy storage will have broad prospects.
This paper presents a grid applied to hair super capacitor energy storage system. First analyzes the super capacitor energy storage principle of a super capacitor charge and discharge characteristics, describes the super capacitor energy storage system used in bidirectional DC / DC converter. On the structures of the super capacitor energy storage system of the super capacitor bank, the main circuit and control circuit design. As the super capacitor energy storage system is mainly used to solve energy supply and demand imbalance, so the super-capacitor energy storage system in a bi-directional DC / DC converter has two operating modes: super capacitor energy storage absorb energy from the photovoltaic cell, the bi-directional DC / DC converter operates in Buck circuit model; super-capacitor pack release energy to the load, the bidirectional DC / DC converter operates in Boost circuit mode.
Finally, the super capacitor energy storage system two operating modes are simulated. Simulation results show that the super capacitor energy storage system by the super capacitor bank design and bi-directional DC / DC converter closed-loop control design, super capacitor energy storage syste