CAJ | 학술논문

提出一种基于嵌入升压单元的双移相控制隔离升降压变换器及其控制方法。通过在倍压输出整流电路中嵌入升压开关，使变换器可工作在升降压模式、实现宽范围输出；通过采用双移相控制使得原副边所有开关管和二极管在宽范围实现软开关；变压器漏感可以作为能量传输电感的一部分，且变换器原副边开关器件分别由输入电压和输出电压钳位，器件应力低。详细分析变换器的工作原理、控制策略和特性，实验验证了所提出拓扑及其控制方法的正确性和有效性。
제출일충기우감입승압단원적쌍이상공제격리승강압변환기급기공제방법。통과재배압수출정류전로중감입승압개관，사변환기가공작재승강압모식、실현관범위수출；통과채용쌍이상공제사득원부변소유개관관화이겁관재관범위실현연개관；변압기루감가이작위능량전수전감적일부분，차변환기원부변개관기건분별유수입전압화수출전압겸위，기건응력저。상세분석변환기적공작원리、공제책략화특성，실험험증료소제출탁복급기공제방법적정학성화유효성。
A dual-phase-shifted controlled isolated Buck- Boost converter with wide voltage-gain along with its control strategy was proposed in this paper. By adding boost switches to the conventional voltage- doubler diode-rectifier, the converter can operate in Buck/ Boost modes; with dual-phase-shift modulation, soft- switching of active switches and naturally turn-off without reverse recovery of diodes can be realized in a wide range; leakage inductance of transformer is utilized for power transfer. The voltage stress of primary-side and secondary-side switches are clamped to input and output voltages which are much lower. The operation principle and steady-state characteristics were analyzed in detail and verified with experimental results.