基于DSP控制的有源箝位正反激变换器研究  

Research on Active Clamp Positive Forward-flyback Converter Based on DSP Control

作　　者：张安明 嵇保健 ZHANG An-ming;JI Bao-jian(The First Military Representative Office of the Chinese People's Liberation Army Navy in Dalian,Dalian 116011,China)

机构地区：[1]中国人民解放军海军驻大连地区第一军事代表室,辽宁大连116011 [2]南京理工大学,自动化学院,江苏南京210094 [3]南京工业大学,电气工程与控制科学学院,江苏南京211816

出　　处：《电力电子技术》2019年第11期110-113,120,共5页Power Electronics

摘　　要：提出一种基于数字信号处理(DSP)控制的有源箝位正反激变换器。该拓扑由反激变换器次级配合不对称半桥倍压整流电路构成。其变压器除了能作为反激耦合电感传递能量外,还能在主开关管开通时向次级倍压电容传递能量,提高了变压器的利用率。而且通过DSP控制,变换器的输入电压和负载改变时,均能保持稳定的电压输出。此外,初级开关管均能实现全负载范围软开关,提高了变换器效率。详细分析了变换器的工作原理及DSP控制策略的实现方式,搭建了一台300W实验样机并证明了理论分析的正确性。An active-clamped forward-flyback converter is presented based on digital signal processing(DSP).The topology is composed by an asymmetric half-bridge voltage-multiplier rectifier on the primary of flyback converter.The transformer of the converter can be used as a coupled inductor to transfer energy and also can be used as a transformer to deliver power to the voltage doubling capacitor when the main switch tube is opened.The utilization of the transformer is greatly improved.At the same time,the switch tube of the primary side of transforme can realize full load range soft switch by reasonable design.lt has a high efficiency.The working principle of the converter and DSP control stategy are analyzed,a 300 W experimental prototype is set up and the correctness of the theory is proved.

关 键 词：变换器 有源箝位 正反激 

分 类 号：TM46[电气工程—电器]