有源钳位单级隔离型AC-DC功率因数变换器  

A Single Stage Isolated AC-DC Power Factor Corrected Converter with Active Clamping

作　　者：张志 孟利伟 唐校 张兆云 谢小鲲 Zhang Zhi;Meng Liwei;Tang Xiao;Zhang Zhaoyun;Xie Xiaokun(School of Electrical Engineering and Intelligence Dongguan University of Technology,Dongguan 523808,China;School of Automation Guangdong University of Technology,Guangzhou 510006,China;East Group Company Limited,Dongguan 523808,China)

机构地区：[1]东莞理工学院电子工程与智能化学院,东莞523808 [2]广东工业大学自动化学院,广州510006 [3]易事特集团股份有限公司,东莞523808

出　　处：《电工技术学报》2021年第12期2616-2626,共11页Transactions of China Electrotechnical Society

基　　金：广东省自然科学基金项目(2016A030313134);教育部产学合作协同育人项目(201801283006);广东省高等教育教学研究与改革项目(PX-3218216)资助。

摘　　要：该文提出一种基于有源钳位技术的单级隔离型AC-DC功率因数校正变换器拓扑,该变换器具有升压和功率因数校正功能,且仅通过单级功率变换实现输入和输出电压的隔离。首先,详细分析该拓扑的工作原理;然后,通过合理设计谐振电感和电容参数,并结合有源钳位技术,降低开关管的电压应力,并实现主开关管和辅开关管的零电压开通和二次侧整流二极管零电流关断;最后,详细推导该变换器关键元器件的设计过程,并搭建开关频率为85kHz的基于SiC功率器件3kW实验样机,对所提拓扑工作原理的正确性和可行性进行实验验证。该变换器能工作于较宽的输入电压范围,具有元器件少、控制方法简单、功率因数高和能量转换效率高等优点。A single-stage AC-DC isolated power factor corrected converter topology with active clamping is proposed in this paper.The converter has the functions of step-up and power factor correction,and only realizes the isolation of input and output voltage through single-stage power conversion.Firstly,the working principle of the topology is analyzed in detail.Then,the voltage spikes of the main and auxiliary switching tubes are reduced based on the active-clamped technology,and the zero-voltage-switch turning-on for main and auxiliary switching tubes as well as zero-current-switch turning-off for output rectifier diodes can be realized through the reasonable design of resonant inductance and capacitance parameters.Finally,the design process for the key components of the converter is derived,and a 3 kW experimental prototype based on SiC power device with the switching frequency of 85 kHz is built to verify the correctness and feasibility of the proposed topology.The converter can work in a wide range of input voltage and has the advantages of fewer power components,simple control method,high power factor and high energy conversion efficiency.

关 键 词：功率因数校正 有源钳位 谐振型 碳化硅 

分 类 号：TM46[电气工程—电器]