一种应用于直流配电网的隔离直流变换器软启动方法  

A soft starting method for the isolated DC/DC converter in DC distribution systems

作　　者：潘羿威 袁帅[1] 陈阿莲[1] 张承慧[1] 

机构地区：[1]山东大学控制科学与工程学院,山东济南250061

出　　处：《山东大学学报（工学版）》2017年第4期37-42,共6页Journal of Shandong University（Engineering Science）

基　　金：国家自然科学基金资助项目(51377101);教育部新世纪人才支持计划资助项目(NCET-13-0339)

摘　　要：针对广泛应用于直流配电网的双有源桥的启动电流冲击问题,提出一种简单的直流变换器软启动方法。在设定的启动时间内,输入侧H桥输出方波电压占空比从0逐渐增加到0.5,同时通过移相控制调节输出侧电压在相同的时间内从0逐渐增加到给定值。通过这两种方法的协同控制,可以有效抑制启动时电流冲击和直流电压振荡,系统具备很好的抗扰能力且不需要采用传统软启动的复杂模式切换。分析和仿真验证了软启动方法的有效性。To solve over current problem of the isolated DC/DC converter that commonly applied in DC distribution systems,a novel simple soft starting method was proposed. During the starting time,the dutycycle of the input side square wave voltage gradually changed from 0 to 0. 5,while the DC voltage ramped from 0 to the final set value at the same time by phase shift control. By applying these two methods,current overshooting and capacitor voltage oscillation could be effectively suppressed. The system had a strong anti-disturbance capacity and do not require complex mode switching procedure as conventional soft starting method. Simulation results were provided to validate the effectiveness of the proposed soft starting method.

关 键 词：直流配网 直流变换器 移相控制 软启动 

分 类 号：TM46[电气工程—电器]