摘要
双向DC-DC变换器在混合动力汽车和直流不间断供电系统等场合应用广泛。半桥式是双向DC-DC变换器最常用的拓扑结构,其一般采用PWM的控制方式,但使用此控制方式下电路存在较大反向电流。针对减小电路反向电流这一目标,在半桥双向DC-DC电路拓扑中使用峰谷值双门限控制方式。然后通过PSIM仿真与搭建实验样机,对两种控制方式下半桥双向DC-DC电路反向电流进行对比,验证了该控制策略在半桥双向DC-DC电路拓扑中应用的可行性,实现了减小电路反向电流的目标。
Bidirectional DC-DC converters are widely used in hybrid vehicles and DC uninterruptible power supply systems.Half-bridge is the most common topology for bidirectional DC-DC converters.It generally adopts PWM control method,but there is a large reverse current in the circuit using this control mode.In order to reduce the reverse current of the circuit,a peak-to-valley double threshold control method is used in the half-bridge bidirectional DC-DC circuit topology.Then simulate and build the experimental prototype through PSIM,comparing the reverse currents of the two-half bridge DC-DC circuits under two control modes,the feasibility of the control strategy is verified,and the goal of reducing the reverse current of the circuit is achieved.
作者
宋华江
SONG Hua⁃jiang(College of Electrical Engineering,Qingdao University,Qingdao 266071,China)
出处
《电子设计工程》
2019年第24期57-60,65,共5页
Electronic Design Engineering