中国电机工程学报Issue(27)：60-68,9.
变导通时间控制临界连续模式反激PFC变换器
Variable On-time Controlled Critical Conduction Mode Flyback PFC Converters
摘要
Abstract
A control strategy for critical conduction mode (CRM) Flyback power factor correction (PFC) converters which can realize unity power factor (PF) is proposed in this paper. By using input voltages and the voltage across the auxiliary winding of the Flyback transformer to control the turn-on time of the switch of the CRM Flyback PFC converter, the PF and the total harmonic distortion (THD) of the CRM Flyback PFC converter can be improved. The operation principles of the traditional constant On-Time (COT) controlled CRM Flyback PFC converters and the variable On-Time (VOT) controlled CRM Flyback PFC converter are analyzed. The experimental results show that the PF and THD of VOT controlled CRM Flyback PFC converters are better than these of COT controlled CRM Flyback PFC converters.关键词
临界连续模式/反激变换器/总谐波畸变/功率因数校正/变导通时间Key words
critical conduction mode (CRM)/flyback converter/total harmonic distortion (THD)/power factor correction (PFC)/variable on-time分类
信息技术与安全科学引用本文复制引用
阎铁生,许建平,张斐,何圣仲,董政..变导通时间控制临界连续模式反激PFC变换器[J].中国电机工程学报,2013,(27):60-68,9.基金项目
国家自然科学基金项目(51177140)；中央高校基本科研业务费专项资金资助(2682013ZT20)。Project Supported by National Natural Science Foundation of China (51177140) （51177140）
the Fundamental Research Funds for the Central Universities (2682013ZT20) （2682013ZT20）
