新型无源软开关变换器  

A novel passive soft switch converter

作　　者：胡浩[1] 闫英敏[1] 陈永利[1] 

机构地区：[1]军械工程学院,河北石家庄050003

出　　处：《电子设计工程》2013年第5期140-142,145,共4页Electronic Design Engineering

摘　　要：普通的PWM变换器具有结构简洁、控制简单、频率恒定、输出特性好等优点,故广泛应用于社会生活的各个领域中。本文以boost基本电路为基础,采用简单的无源谐振网络,设计实现了开关管的软开关。这种新型的无源软开关解决了输出二极管反向恢复问题,具有结构简单、高频率、高效率、易于控制等优点。该设计可用于以IGBT为开关器件的高压场合。分析了该变换器的工作原理、实现条件、设计谐振网络的参数、并进行了仿真。Ordinary PWM converters have advantages of concise structure, simple control, constant frequency, perfect output characteristics, so it is widely used in the fields of social life. The converter based on the basic boost circuit, simple passive resonant network, designed and realized the soft switch of the switch tube. The improved passive soft switch solved the problem of output diode reverse recovery and has simple structure, high frequency and high efficiency. This design can be used for switching device with IGBT in high-pressure occasion. The operational principle of the converter and realizing condition is analyzed, design parameters of resonant network, and simulate itself.

关 键 词：软开关技术 无源辅助谐振网络 无源变换器 仿真 

分 类 号：TK121[动力工程及工程热物理—工程热物理]