CAJ | 학술논문

提出一种基于Boost拓扑与反激拓扑有机组合思想的Boost-Flyback变换器，Boost环节与反激环节共用输入支路，使电感一变压器的漏感能量得以利用，消除了漏感损耗，并实现了开关管电压钳位，减小了开关管电压应力；Boost与反激环节的输出支路串联，实现了高电压增益；Boost-Flybaek变换器输入并联输出串联，进一步提高了变换器的电压增益，同时减小了输入输出电压及电流纹波。提出新拓扑的DCM-ZVS工作模式控制方法，并在开环方式下实现了输出功率的控制。详细分析拓扑的工作原理、电压增益特性及控制方法。通过230W30V／380V的实验样机验证理论分析的有效性。
제출일충기우Boost탁복여반격탁복유궤조합사상적Boost-Flyback변환기，Boost배절여반격배절공용수입지로，사전감일변압기적루감능량득이이용，소제료루감손모，병실현료개관관전압겸위，감소료개관관전압응력；Boost여반격배절적수출지로천련，실현료고전압증익；Boost-Flybaek변환기수입병련수출천련，진일보제고료변환기적전압증익，동시감소료수입수출전압급전류문파。제출신탁복적DCM-ZVS공작모식공제방법，병재개배방식하실현료수출공솔적공제。상세분석탁복적공작원리、전압증익특성급공제방법。통과230W30V／380V적실험양궤험증이론분석적유효성。
A novel Boost-Flyback converter was proposed based on the combination of Boost and Flyback topologies. The energy stored in the leakage inductance of transformer is recycled and the active switch turn-off voltage is clamped by sharing the branch of the input side of the two topologies mentioned. High voltage gain is achieved with the output of Boost and Flyback topologies connected in series. The voltage gain of the converter is further improved with two of the Boost-Flybaek topologies proposed in input-in-parallel output-in-series connected. Devices stress, output and input voltage/current ripple are reduced. An output power control and discontinued current mode-zero voltage switching （DCM-ZVS） control were proposed also. The operational principle, voltage gain characteristics and principle of DCM-ZVS control method were analyzed in detail. The experimental results based on a 230 W 30 to 380 V DC/DC prototype verify the effectiveness of the theoretical analysis.