基于双向DC/DC变换器锂离子电池充放电控制研究

在对已有双向DC/DC变换器进行优化设计的基础上,提出一种适于光伏系统中不完全放电的锂离子电池的两阶段充电控制策略。在Matlab仿真环境下,搭建了基于双向DC/DC变换器的充放电仿真电路和独立光伏系统整体供电电路,并在负载变化的不同条件下进行了仿真,检验了电路拓扑结构的正确性以及充放电控制策略的合理性。

Research on control of lithium-ion battery charge and discharge based on bi-directional DC/DC converter

In the situation,a two-stages charge control strategy for the lithium-ion battery in the independent PV power system based on optimization on the circuit topology of bi-directional DC/DC already underway was presented.Moreover,the charge and discharge circuit based on bi-directional DC/DC converter and an integral independent PV power system were built with Matlab,and simulated under the different conditions when the loads change.The simulation results show the correctness of the charge and discharge circuit topology and control strategy.