基于双向DC／DC的混合能源系统设计研究

Design and Research of Bi-directional DC/DC Based Hybrid Energy System

由于单一电池系统无法满足实际系统的需求,电池超级电容混合能源系统成为目前研究方向之一。为了主动控制电池超级电容之间的能量分配,主控双向直流变换器的设计成为目前混合能源系统研究的重点。从理论上对锂离子电池、超级电容和双向DC/DC变换器进行了详细分析,在此基础上,设计了混合能源系统,并制作了系统样机,进行了实验验证。实验结果表明,所设计的双向DC/DC变换器能实时准确跟踪给定电流,样机在全工作范围内具有较高的效率。所设计基于双向DC/DC变换器的混合能源系统是全可控和高效的。

Because of the single battery system cannot meet the actual needs of the energy system, the super-capacitor- battery hybrid energy system has become one of the current research topics.In order to actively control the energy distribution between the battery and the super-capacitor, the design of the bi-directional DC/DC converter has become the focus of the current research in hybrid energy system.The detailed theoretical analysis of the lithium-ion battery, the super-capacitor and the hi-directional DC/DC converter are presented, based on the theoretical analysis, the design of the super-capacitor battery hybrid energy system is also presented.A prototype is built based on the designed system.Experimental results show that the designed bi-directional DC/DC converter can accurately track the given current in real-time, and the prototype has high efficiency over the entire operating range.The bi-directional DC/DC converter based hybrid energy system is fully controllable and highly eFFicient.