半桥式双向DC-DC变换器的优化控制研究  

Research and optimal control for half-bridge bidirectional DC-DC converter

作　　者：宋华江 SONG Hua⁃jiang(College of Electrical Engineering,Qingdao University,Qingdao 266071,China)

机构地区：[1]青岛大学电气工程学院

出　　处：《电子设计工程》2019年第24期57-60,65,共5页Electronic Design Engineering

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.

关 键 词：半桥双向DC-DC变换器 升-降压一体 反向电流 

分 类 号：TN7[电子电信—电路与系统]