摘要
通过对背靠背式两电平无桥功率因数校正电路与双向开关管的融合,构造一族具有开关器件数量少的背靠背式三电平功率因数校正变换器(back-to-back three-level power factor correction converter,BT-PFC)。背靠背式无桥功率校正电路直流侧采用级联或嵌入构造方式,可实现工频周期内桥臂电压输出5种电压电平,有效减小谐波含量和降低等效开关频率。该文对所提BT-PFC变换器的电路级联式/嵌入式结构、工作原理、电路拓扑特性、解耦型闭环控制和调制技术等方面进行详细分析。最后,对BT-PFC-VI电路搭建实验样机,其输入为220 V/50 Hz,输出为1 kW/400 V,实验结果表明所提单相BT-PFC三电平推导方案的可行性,同时验证电路拓扑理论分析的正确性。
A family of back-to-back three-level power factor correction(BT-PFC)converters with less switch devices are constructed by the back-to-back bridgeless power factor correction circuit and different bidirectional-switches.The DC side of the back-to-back bridgeless power correction circuit adopts a cascade or embedded bidirectional switch structure,which can achieve five voltage levels between bridge arms during the power frequency cycle,effectively reducing harmonic content and lowering the equivalent switching frequency.In this paper,the cascaded/embedded structure,working principle,circuit topology characteristics,decoupling closed-loop control and modulation technology of the proposed BT-PFC converter are analyzed in detail.Finally,an experimental prototype with an input of 220 V/50 Hz and a rated output of 1 kW/400 V was designed based on the BT-PFC-VI circuit.The experimental results verified that the theoretical analysis of the proposed PFC topology is correct,and its design method is proven to be feasibility.
作者
马辉
刘惠群
向昆
范李平
姚俊伟
王灿
黄悦华
MA Hui;LIU Huiqun;XIANG Kun;FAN Liping;YAO Junwei;WANG Can;HUANG Yuehua(College of Electrical Engineering&New Energy,China Three Gorges University(Hubei Provincial Engineering Research Center of Intelligent Energy Technology),Yichang 443002,Hubei Province,China;State Gird Yichang Power Supply Co.,Ltd.,Yichang 443000,Hubei Province,China)
出处
《中国电机工程学报》
北大核心
2025年第16期6494-6504,I0029,共12页
PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING
基金
国家自然科学基金项目(52377191)
湖北省自然科学基金项目(2024AFB584)。
关键词
背靠背
功率因数校正
三电平变换器
back-to-back
power factor correction
three-level converter
