采用移相控制的具有软开关能力的交错图腾杆无桥Boost PFC变换器

The Staggered Totem Pole Bridgeless Boost PFC Converter with Soft Switching Capability by Applying Phase Shift Control

该文提出了一种具有软开关能力的图腾杆式无桥交错Boost功率因数校正器(power factor correction,PFC).与传统的交错图腾杆无桥升压PFC变换器相比,在2个PFC变换器单元之间增加了一个电感,利用增加电感的能量,使所有开关实现零电压开关.此外,通过在2个PFC变换器单元之间应用移相控制,使得变换器可以将所加电感上的电流大小控制为一个最优值.因此,该变换器可以实现零电压工作,同时最大限度地降低附加电感的导通损耗和铁心损耗.通过Matlab Simulink仿真的结果表明:该变换器可以达到较高的效率,验证了该变换器的可行性.

The totem pole bridgless staggered Boost Power Factor Correction(PFC)with soft switching capability is proposed in this paper.Compared with the traditional staggered totem pole bridgeless boost PFC converter,the converter adds an inductor between the two PFC converter units,and uses the energy of the added inductor to make all switches realize zero voltage switching.In addition,by applying phase shift control between two PFC converter units,the proposed converter can control the current on the inductance to an optimal value.Therefore,the proposed converter can realize zero-voltage operation and minimize the on-off loss and core loss of additional inductors.The simulation results of Matlab Simulink show that the proposed converter can achieve high efficiency and verify the feasibility of the converter.