基于dsPIC的LLC串联谐振DC/DC变换器研究  

Study of LLC Series Resonant DC/DC Converter Based on dsPIC

作　　者：顾启民[1] 郑建勇[2] 

机构地区：[1]常熟理工学院,江苏常熟215500 [2]东南大学,江苏南京210096

出　　处：《电力电子技术》2010年第4期21-23,共3页Power Electronics

基　　金：江苏省高校自然科学研究计划项目(07KJD470004)~~

摘　　要：LLC串联谐振变换器具有拓扑结构简单、高效率和易高频化等特点,因此得到了广泛应用。而开关电源的数字控制实现可采用先进的控制策略,以简化系统结构,缩小体积,提高系统性能。介绍了LLC串联谐振型DC/DC变换器的工作原理,提出了采用数字控制芯片的控制方案,最后给出了900 W功率的实验样机,验证了数字控制LLC串联谐振变换器的优良性能。LLC series resonant DC/DC converter has simple structure,high efficiency and high switching frequency capa-bility,so it is widely used.Digital control switching mode power supply technology can achieve the realization of advanced control strategy,simplify the structure of the system,reduce the size and improve system performance.This paper introduces the principle of LLC series resonant DC/DC converter,and provides a digital control solution based on dsPIC.Finally,the fine performance of digital control LLC series resonant converter is verified on a 900 W power prototype.

关 键 词：变换器 数字控制 串联谐振 

分 类 号：TM46[电气工程—电器]