基于Cuk拓扑结构的双向DC/DC变换器的研究

Research on Bidirectional DC/DC Converter based on Cuk Topology

针对双向DC/DC变换器在能量双向传输时存在电压电流波动的情况,采用基于Cuk拓扑结构的双向DC/DC变换器。通过PI控制器加入电流反馈环来抑制在能量传输时所产生的电压电流波动。在LTspice软件和Matlab/Simulink仿真软件中对系统的输出电压及电流进行了稳定性分析。从而实现基于Cuk拓扑结构的双向DC/DC变换器的电路设计,PI控制器设计、以及系统的开闭环仿真。

In view of the voltage and current fluctuations in the bidirectional DC/DC converter during the bidirectional energy transmission,a bidirectional DC/DC converter based on Cuk topology is adopted.A current feedback loop is added to the PI controller to suppress voltage and current fluctuations during energy transmission.The stability of the output voltage and current of the system was analyzed in LTspice software and Matlab/Simulink simulation software.In this way,the circuit design of bidirectional DC/DC converter based on Cuk topology,the design of PI controller,and the open-loop simulation of the system can be realized.