一种升降压集成的有源箝位正激变换器

Active clamp forward converters with Boost-Buck integration

为提高有源箝位正激变换器输入电压范围、减小变压器原边线圈输入电流,提出了一种升降压集成的有源箝位正激变换器电路.首先分析了该变换器的工作过程,然后给出了电路参数设计,最后利用Saber软件进行了仿真.该电路实现了初级电压的升压和输出电压的升降压集成功能.仿真结果表明,该变换器可以有效地提高输入电压范围,减小原边线圈的输入电流,实现集成功能,从而验证了该电路的正确性与可行性.

In order to improve the input voltage range of the active clamp forward （ACF） converters and reduce the input current of the transformer primary coil, this paper proposes a ACF converter circuit with Boost-Buck integration. Firstly, the operating process of this converter is analyzed, the circuit parameter design is given out, next, and finally, the simulation is performed using Saber software. Simulation results show that this proposed circuit can realize the integration function of the primary voltage step-up and the output voltage Boost-Buck, and this converter can improve effectively the input voltage range, reduce the input current of the primary coil, and realize the integration function, thus verifying the validity and feasibility of the circuit.