The soft-switching buck inverter, which is mainly applied to solve the contradictions between the switching frequency and the shoot-through problem along with the dead-time effect, is proposed in this paper. A detailed analysis of the relationship between the range of the duty ratio to realize soft-switching as well as the additional voltage stress and the current stress is conducted. In addition, a 1 kW prototype is designed and established. Results of simulations and experiments verify the validity of the theoretical analysis. Furthermore, the proposed soft-switching buck inverter has a strong practical significance in situations where medium and high power outputs are required.

提出了一种软开关降压型逆变器，主要用于解决开关频率与直通问题之间的矛盾以及停滞时间效应。对实现软开关的占空比范围以及附加电压应力和电流应力之间的关系进行了详细分析。此外，还设计并建立了一个1 kW的原型。仿真和实验结果验证了理论分析的正确性。此外，所提出的软开关降压逆变器在需要中功率和高功率输出的情况下具有很强的实际意义。