电力系统及其自动化学报2017，Vol.29Issue(10)：22-29,8.DOI:10.3969/j.issn.1003-8930.2017.10.005
基于软开关MERS PFC电路拓扑及性能分析
Topology and Performance Evaluation Based on Soft-switching of MERS PFC Circuit
摘要
Abstract
Owing to the fact that continuous current mode power factor correction(CCM PFC)circuit can be used to sig?nificantly reduce current harmonics and improve the power factor on grid-side,it is widely used in the front-end circuit of different power converters. Based on the soft-switching technology of LC resonant circuit,a novel CCM PFC circuit to?pology,i.e.,a magnetic energy recovery switch power factor correction(MERS PFC)circuit,is proposed in this paper. First,through proper control,this circuit not only possesses a high input power factor,but also achieves zero current turn-on and zero voltage turn-off on a full power switching device. Then,an electrical model is established for the pro?posed circuit,and the voltage-current operation characteristics in each switching cycle are analyzed in detail. More?over,a boost ratio formula is proposed,and simulation results prove the validity of modeling and derived formulas. On this basis,the operation performance of MERS PFC circuit is discussed. Calculation results show that compared with the traditional boost PFC circuit,the loss of the proposed circuit is reduced by about 39%at the switching frequency of 10 kHz,indicating a higher efficiency;meanwhile,it has a higher boost capacity with the same parameters. Finally, experimental results verify the proposed MERS PFC circuit and its soft-switching operation characteristics.关键词
电路拓扑/功率因数校正/软开关技术/性能分析Key words
circuit topology/power factor correction(PFC)/soft-switching technology/performance evaluation分类
信息技术与安全科学引用本文复制引用
程苗苗,刘治国,涂春鸣,张忠杰,包跃跃..基于软开关MERS PFC电路拓扑及性能分析[J].电力系统及其自动化学报,2017,29(10):22-29,8.基金项目
国家自然科学基金青年科学基金资助项目(51307048) （51307048）
湖南省科技计划资助项目(2015WK3004) （2015WK3004）
