CAJ | 학술논문

高电压宽范围输入的辅助电源在中大功率电力电子装置中被广泛应用,提出了采用工作在DCM状态下单管反激电路的方案设计高压输入辅助电源,计算了变换器的电路参数;根据输入电压高的特点,优化设计了变压器的变比和二次侧的反射电压,考虑到变压器的绝缘和爬电效应,提出了一种高电压输入变压器的绕制方法;设计了RCD吸收电路,极大地减小了主开关管上关断时的电压尖峰。
고전압관범위수입적보조전원재중대공솔전력전자장치중피엄범응용,제출료채용공작재DCM상태하단관반격전로적방안설계고압수입보조전원,계산료변환기적전로삼수;근거수입전압고적특점,우화설계료변압기적변비화이차측적반사전압,고필도변압기적절연화파전효응,제출료일충고전압수입변압기적요제방법;설계료RCD흡수전로,겁대지감소료주개관관상관단시적전압첨봉。
High voltage input auxiliary power supply is widely used in medium and high power device. A scheme using flyback topology working in DCM was proposed to design an auxiliary power supply. The parameters of transformer were designed. According to the characteristics of high input voltage, the design of the ratio of the transformer and reflected voltage from secondary side were optimized. Considering the transformer insulation and creepage effect, a kind of method of designing the high input voltage transformer was put forward. The RCD snubber was designed to reduce the peak voltage when the MOSFET was turned off.