【摘要】 把移相控制全桥变换技术用于三相AC/DC变换器的功率因数调整 ,将中线接至变换器 ,得到一种新型主电路拓扑结构 ,各功率管实现了软开关。利用Pspice对该结构进行了仿真 ,系统的功率因数约 0 98,实验表明这一结构是可行的更多还原

【Abstract】 The neutral wire is introduced and connected to a full bridge three phase AC/DC converter to get a novel topology for PFC In this topology,isolation of the DC output from AC input is achieved because of the full bridge Softswitching is obtained with phase shift technique The PFC principle is analyzed and the power factor is about 0 98 Pspice is used to simulate the topology It is shown that the higher the rectified voltage is,the higher the power factor is Some experimental results are given更多还原