中文说明：在本文中，我们研究了高效率的软开关技术一个新的降压 - 升压型DC / DC转换器。该 切换中所提出的转换器装置通过软开关操作用一个新的部分谐振电路。部分谐振电路被设计成替换的储能电感器和一个传统的降压 - 升压转换器中使用的缓冲电路，然后该变换器的结构得以简化。该转换器的切换控制技术也简化了开关在一个恒定的开关频率驱动。其结果是，该开关的功率损耗非常低，系统效率是高的。此外，该转换器的输出电压由PWM控制技术规范，并流入到转换器的谐振电感器的电流断续，使简化的控制方法和控制元件。与常规降压 - 升压DC / DC变换器的比较，对计算机和实验结果的一些模拟结果证实了所提出的转换器的分析结果的有效性。
English Description：
In this paper, we study on a new buck-boost dc/dc converter of high efficiency by soft switching technique. Theswitching devices in the proposed converter are operated by soft switching with a new partial resonant circuit. The partial resonant circuit is designed to replacement of an energy storage inductor and a snubber circuit used in a conventional buck-boost converter, and then the configuration of the proposed converter is simplified. The switching control technique of the converter is also simplified for the switches to drive in a constant switching frequency. The results are that the switching power loss is very low and system efficiency is high. In addition, the output voltage of the converter is regulated by PWM control technique, and the discontinuous current flowing into the resonant inductor of the converter makes to simplify control method and control components. In comparison with the conventional buck