中文摘要：

针对现有的功率因数校正电源模块（PFC）直接并联后均流精度差的问题,提出一种基于自主均流技术的功率因数校正电路。该策略在电源模块的输出端引入负电压采样电路和自主均流电路,实现了功率因数校正电源模块的自动均流,提高了电源模块并联后的均流精度。基于Saber仿真软件搭建了基于自主均流技术的功率因数校正电路。仿真结果不仅验证了该电路的有效性,而且也表明了电源模块的均流精度在轻载并联时能控制在5%以内。

英文摘要：

In order to solve the problem of low accuracy for the PFC in parallel, putting forward a power factor regulating circuit basing on automatic current averaging. This idea is aim to achieve automatic current averaging of the power factor regulator, introducing a negative voltage sampling from the output and automatic current averaging circuit. Saber simulation is performed to test the power factor regulator with automatic current. The result of simulation not only proves the practicability of this circuit, but also shows this design can reliably control the accuracy of average current of this power module within 5 % when slight load in parallel.