摘要
引入了双向半桥DC-DC变换器对超级电容器进行充放电的换流方式:阐述了超级电容器在双向半桥DC-DC变换器工作原理;分析了单端稳压和稳压快速充电两种控制策略,并给出了双闭环控制的原理框图;最后搭建了以直流电机为负载的上述两种控制策略下的仿真系统,通过设定电机运行多种工况,完整地考察了超级电容与位能负载间的多种换流情况。仿真结果验证了该变换电路不仅能够实现馈能的完全吸收,还具有较快速的放电过程动态响应,且电路简单,易于工程实现,满足了位能型负载下超级电容器储能系统的变换要求。
Bi-directional half-bridge DC-DC converter was used to control the super capacitor charging and discharging in order to change the direction of current. Bi-directional half-bridge DC-DC converter were described to control the super capacitor; Single- ended voltage regulator and rapid charging regulator of the two control strategies were analyzed, and the dual closed-loop control block diagrams were given. Finally, a simulation system that a DC motor for the load and the two control strategies investigated was built. The converters between the super capacitor and potential energy load were studied by setting the motor to run in kinds of operating conditions. Simulation results verify that the conversion circuit can achieve not only completely absorbed fed energy but also had a faster dynamic response of the discharge process, also the circuit is simple and easy to apply in project implementation which can meet the transformation of the super capacitor energy storage system under the load of the potential type.
出处
《变频器世界》
2012年第12期58-62,共5页
The World of Inverters
