为满足新能源并网母线所需的高增益直流电压输出,设计一种新型耦合电感高增益DC-DC变换器。拓扑引入耦合电路倍压单元进行变换器的增益调节,通过钳位回路吸收耦合电感的漏感能量,削减开关器件工作时的电压尖峰,提升变换器效率。对工作原理及模态进行分析,通过数学公式对器件应力、增益进行推演。与其他3种典型变换器进行性能比较,结合理论及实验,验证新型耦合电感高增益DC-DC变换器的可行性及有效性。
Abstract
A novel high-gain DC-DC converter with coupled inductor is designed to satisfy the high-gain DC voltage output required by the new energy grid-connected bus. A coupled circuits doubling voltage unit is introduced to adjust the gain of the converter. The leakage energy of the coupled inductor is dosorbed through the clamping circuit to reduce the voltage spike when the switching device is working so that to improve the efficiency of the converter. The working principle and modes are analyzed, and the device stress and gain are deduced by mathematical formula. Compared with other three typical converters, the feasibility and effectiveness of the new high-gain DC-DC converter with coupled inductor are verified by theory and experiments.
关键词
DC-DC变换器 /
耦合电路 /
增益调节 /
倍压单元 /
钳位回路
Key words
DC-DC converter /
coupled circuit /
gain regulation /
doubling voltage unit /
clamping loop
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参考文献
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基金
山东省自然科技基金面上项目（ZR2020ME200）; 山东省研究生教育优质课程建设项目（SDYKC20113）
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