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- 2017
一种应用于直流配电网的隔离直流变换器软启动方法
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Abstract:
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。
Abstract: 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
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