一种电流馈电式半桥拓扑的研究

介绍了一种电流馈电式半桥电路拓扑结构。该拓扑不仅能实现灯负载的独立操作,还具有可靠性高、安全的隔离输出、成本相对低廉等优点,可以应用于荧光灯电子镇流器的研发领域。为了在电子整流器的研发中使用该拓扑,掌握拓扑的工作过程尤为重要。选取了经典的T8 32 W 的4 灯并联负载为例,对该主电路在稳态时的工作状态进行了仿真,并搭建了实验平台对仿真结果进行了验证。仿真及实验得到了关键元件的瞬时电压电流波形是一致的,并在此基础上结合示意图详细阐述了主电路的工作过程。

Current fed half bridge topology

A type of current fed half bridge topology was introduced. When applied in research and development of fluorescent lamp electronic ballasts, the topology can not only meet the requirement of independent lamp operation but also has such advantages, as high reliability, isolated and safe output and low cost etc. In order to us this topology in ballast design,it is of great importance to dig into this topologry. Four paralleled lamps of T8 32W were chosen as examples for simulation on function analysis at steady state. An experimental platform was set up to validate the simulated results. Finally, transient V-I mappings of key components were obtained based on which the full function of the main circuit was illustrated while using sketch maps. Key