隔离三电平零电压直流变换器

An Isolated Three Level ZVS DC/DC Converter

介绍了一种隔离三电平零电压直流变换器。其主开关管的电压应力均为输入电压的一半。由于采用了交错ZVS PWM控制并利用输出滤波电感中的能量,因此能够在宽负载范围内实现开关管的ZVS。分析了该变换器的工作原理和工作特性,并通过一个480W(输出48V/10A)的原理样机进行了验证,最后给出了实验结果。

This paper introduces an isolated three level ZVS DC/DC converter. The voltage stress of each main switch is only half of the input voltage. Whereas the Zero-VoltageSwitching（ZVS）for each switch is achieved under wide load range by using the interleaved PWM control and the energy stored in the output inductances. The principle and characteristics of the proposed converter are analyzed and verified on a 480 W（48 V/10 A output）experimental prototype. The experimental results are given in the end.