基于交错式PFC的高效率开关电源设计  

Design of High Efficiency Switching Power Supply Based on Interleaved PFC

作　　者：余颖[1,2] 肖静 刘花香[2] YU Ying;XIAO Jing;LIU Hua-xiang(Jiangxi Engineering Research Center of Process and Equipment for New Energy,East China University of Technology,Nanchang 330013,China;不详)

机构地区：[1]东华理工大学江西省新能源工艺及装备工程技术研究中心,江西南昌330013 [2]东华理工大学,机械与电子工程学院,江西南昌330013

出　　处：《电力电子技术》2022年第11期80-83,共4页Power Electronics

基　　金：国家自然科学基金(61966001)。

摘　　要：为满足通信基站对高功率、高效率、高稳定性的供电电源要求,设计了功率为3 000 W的开关电源。电源采用了交错式功率因数校正(PFC)电路作为前级,后级采用LLC谐振变换器与同步整流电路实现DC/DC变换。对整个电源电路组成结构与工作原理进行了分析,给出了电路中关键器件的选型计算和损耗分析。对电源的工作效率、功率因数、关键电路中的金属氧化物半导体场效应晶体管(MOSFET)应力、负载调整率等重要指标参数进行了实验测试。结果表明:电源效率可达95%,满载时功率因数达0.999,负载调整率在±0.5%以内。In order to meet the high power,high efficiency and high stability power supply requirements of communication base stations,a switching power supply with a power of 3 000 W is designed.The power supply adopts interleaved power factor correction(PFC) circuit as the front stage,and the latter stage adopts LLC resonant converter and synchronous rectification circuit to realize DC/DC conversion.The composition structure and working principle of the whole power supply circuit are analyzed,and the selection calculation and loss analysis of key components in the circuit are given.The working efficiency of the power supply,power factor,metal-oxide-semiconductor field-effect transistor(MOSFET) tube stress in key circuits,load regulation rate and other important index parameters are experimentally tested.The test data results show that the power efficiency can reach 95%,the power factor can reach 0.999 at full load,and the load regulation rate is within ±0.5%.

关 键 词：开关电源 交错式功率因数校正 同步整流 

分 类 号：TN86[电子电信—信息与通信工程]