一种开关电源并联系统自动均流技术的研究

Research of automatic current sharing technology of parallel system for switching power supply

针对多个开关电源并联时易出现负载电流在各模块间分配不均的现象,提出了一种数字均流方法,以及按平均电流值实现自动均流的算法。其中开关电源模块具有输出电压以及输出电流双反馈控制模式,使得各模块输出电流得到有效控制,从而达到负载均流控制的目的。提高了整个电源系统的可靠性,具有较大的实用性。

To solve the problems of the unequal distribution of load current in different of modules with switching power supply in parallel,a kind of digital current sharing technology was proposed,and an algorithm based on average current value to realize the automatic current sharing was given.The switching power supply module had a duplex feedback control mode of voltage output and current output,to effectively control the current output of each module and achieve the load sharing control.The reliability of the entire power system was improved with great practicability.