Based on input-series and output-parallel(ISOP) converter and multiple output flyback converter,a kind of auxiliary power supply applicated to high power system is proposed.In the proposed scheme,a new control method with primary side current feedback is presented,so it ensures input voltage sharing and output current sharing of the modules among the ISOP converter,improves the degree of isolation between primary side and secondary side,and e-liminates the opto-coupler from the circuit.Some problems of the new method of control and the design of transformer are analysed.Finally the experimental results verify the effectiveness of the proposed control method and the design.%基于输入串联输出并联(ISOP)变换器和多路输出反激变换器,提出了一种应用于中大功率系统的辅助电源.该电源采用一种初级电流反馈的输入均压输出均流的控制方法,保证了输入电压均压与输出电流均流,提高了初、次级电路之间的绝缘等级,省掉了光耦.分析了电源系统的控制方法和变压器的设计等问题,实验结果验证了控制和设计的正确性.
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