摘要
为了探讨ZCS-Boost倍压变换器应用于行波管电源的可行性,文章分析了全桥ZCS-Boost倍压变换器的零电流实现条件和增益特性。这一变换器结构简单,具有高增益的特点,适合应用于高压高功率的场合。四个开关管都能实现零电流开关。为了推导的顺利进行,本文简要叙述了这一变换器的工作原理,推导出了实现零电流开关的约束条件;由于工作过程复杂,且工作模式较多,所以这一变换器的增益特性还没有被系统地研究过。本文通过引入变量,初步推导了这一变换器的电压增益公式;最后,对这两个结果,运用PSPICE仿真来验证这一变换器在某新型行波管电源28V直流输入的条件下的可行性,结论显示仿真结果和推导公式相互吻合。
The soft-switching condition and gain characteristics of the full-bridge zero-current-switched （FB-ZCS） boost double-voltage converter have been systematically studied to explore its feasible applications in the power supply for the traveling wave tubes （TWT）. The necessary condition required, on which the converter is capable of giving full play of its strengths, such as high voltage gains, simple structure, and feasibility in high voltage and high power applications, was proposed with discussions centered on its operation principle and its limitations when used in complex operation and in various operation modes. The equation of the converter＇s voltage gain with variables of interest was derived. In addition, the converter, used in the new type of 28V direct current TWT, was simulated with the production version of the simulation program with integrated circuit emphasis （PSPICE）. The simulated results agree fairly well with the calculation by means of the newly derived quation.
出处
《真空科学与技术学报》
EI
CAS
CSCD
北大核心
2008年第6期553-556,共4页
Chinese Journal of Vacuum Science and Technology
