一种高效率半桥LLC型的AC/DC变换器设计  

Design of a High Efficiency Half Bridge LLC AC/DC Converter

作　　者：田斌[1] 孙泉辉 TIAN Bin;SUN Quanhui(School of Electrical Information,Wuhan Institute of Technology,Wuhan 430205,Hubei,China)

机构地区：[1]武汉工程大学电气信息学院,湖北武汉430205

出　　处：《电气传动》2023年第11期25-30,共6页Electric Drive

摘　　要：AC/DC开关电源是电力系统的主要动力来源,其发展趋势是:容量大、功率密度大、效率高、功率因数低、谐波含量低。但现有的数字电源仍存在着一些普遍问题:抗干扰能力差、结构功能简单、无法满足电厂和变电站等相关场所使用需求。设计了一种基于芯片控制的半桥开关电源,对其主电路进行了理论分析,并对EMI整流滤波电路、PFC功率因数校正电路、LLC半桥电路等电路进行了详细的设计。实验测试结果表明,该设计合理,具有大容量、高效率、高功率因数、低纹波等特点,能够充分满足目前的市场需求。AC/DC switching power supply is the main source of electrical system,its development trend is large capacity,high power density,high efficiency,low power factor and low harmonic content.However,there are still some common problems with existing digital power supplies,including poor anti-interference ability,simple structure and function,and inability to meet the needs of power plants and substations and other related places.A design of half-bridge switching power supply based on chip control was described,and its main circuit was theoretically analyzed,and the circuits such as electromagnetic interference(EMI)rectifier filter circuit,PFC power factor correction circuit,and LLC half-bridge circuit were designed in detail.The experimental test results show that it with reasonable design serves as large capacity,high efficiency,high power factor and low ripple,which can fully meet the current market demand.

关 键 词：高效率 功率因数校正 半桥LLC AC/DC变换器 低纹波 

分 类 号：TM564[电气工程—电器]