【摘要】 为解决DC/DC电路中耦合电感增益单元引入的电压尖峰及增大电压应力问题，提出一种新型有源箝位双向大变比DC/DC电路。所提电路不仅可实现电压的大比例变换，还能利用有源箝位电路有效吸收耦合电感的漏感能量，从而降低功率开关管的电压应力。为验证电路的有效性，设计1台低压侧电压为48 V、高压侧电压为400 V、功率为200 W的实验样机。实验结果表明，所提电路能够成功实现电压的大比例变换，并降低功率开关器件的电压应力，验证了电路设计的可行性和有效性，为DC/DC电路的设计提供了新的思路和方法。更多还原

【Abstract】 In order to solve the problem of voltage spikes and increased voltage stress caused by the coupling inductance gain unit in the DC/DC circuit, a novel active clamp bidirectional large ratio DC/DC circuit is proposed.The proposed circuit not only realizes a large proportion voltage transformation, but also effectively absorbs the leakage energy of the coupling inductance by using the active clamp circuit, thereby the voltage stress of the power switching transistor is reduced. To verify the effectiveness of the circuit, an experimental prototype with a low-voltage side of 48 V, a high-voltage side of 400 V and a power of 200 W is designed. The experimental results show that the proposed circuit can successfully achieve a large proportion voltage transformation and reduce the voltage stress of the power switching device. The feasibility and effectiveness of the circuit design is verified. New ideas and methods for the design of DC/DC circuits are provided.更多还原