中国电机工程学报Issue(33)：5854-5860,7.DOI:10.13334/j.0258-8013.pcsee.2014.33.007
一种三电平全桥直流变换器新型控制策略研究
Research on a Novel Control Scheme for Three-level Full-bridge Converter
摘要
Abstract
In the phase-shift control scheme of three-level full-bridge converter, some switches can’t implement soft switching. In the chop plus phase-shift (CPS) control, the total harmonic distortion (THD) of the transformer primary side voltage is high. To resolve this issue, a new symmetrical double phase-shift (SDPS) control scheme was proposed. A comparative study was done between CPS and SDPS control. Through analysis of one switching cycle, we can see that all switches can implement soft switching in SDPS control. Fourier analysis of the voltage showed that THD of the transformer primary side voltage was low in SDPS control. By analyzing how the THD varied with chopping angle, the optimal steady state operating point of this control scheme was got in SDPS control. A three-level full-bridge device was made and the analysis was verified by experiments.关键词
三电平变换器/全桥变换器/对称双移相/谐波总畸变率/软开关Key words
three-level converter/full-bridge converter/symmetrical double phase-shift/total harmonic distortion (THD)/soft switching分类
信息技术与安全科学引用本文复制引用
刘计龙,肖飞,陈伟,杨国润,王恒利..一种三电平全桥直流变换器新型控制策略研究[J].中国电机工程学报,2014,(33):5854-5860,7.基金项目
国家863高技术基金项目(2011AA040302)；新世纪优秀人才支持计划资助项目(NCET-11-0871)。The National High Technology Research and Development of China 863 Program (2011AA040302) （2011AA040302）
Supported by Program for New Century Excellent Talents in University (NCET-11-0871) （NCET-11-0871）
