西南交通大学学报2012，Vol.47Issue(5)：814-819,6.DOI:10.3969/j.issn.0258-2724.2012.05.013
基于阻抗变换的稳频高效非接触电能传输系统
Contactless Power Transfer System with Stabilized Frequency and High Efficiency Based on Impedance Conversion
摘要
Abstract
Aimed at the problem that the variation of load resistance can seriously affect the resonant frequency and efficiency of a contactless power transfer (CPT) system, a stabilized frequency and high efficiency CPT system design method based on impedance conversion was put forward to improve its frequency stability and efficiency. According to the theory that switching converters can realize impedance conversion, a switching converter was added to the secondary circuit, the duty cycle of the converter was controlled to realize the equivalent impedance conversion, and the resonance compensation parameters of the CPT system were optimized for achieving stable frequency and high efficiency. Through resonance compensation and impedance conversion analysis, the calculation equations for the key parameters were built up, and the analytical resolution of the switch duty cycle and the load resistance were obtained. Experimental result shows that when the resistance changes from 1 to 10Ω, the efficiency of the CPT system can always keep 67. 0% through adjustment of the duty cycle.关键词
非接触电能传输(CPT)/阻抗变换/频率/稳定性/高效Key words
contactless power transfer ( CPT) / impedance conversion/ frequency/ stability/ high efficiency分类
信息技术与安全科学引用本文复制引用
夏晨阳,张彦兵,伍小杰,孙跃,左兰,李朝伟..基于阻抗变换的稳频高效非接触电能传输系统[J].西南交通大学学报,2012,47(5):814-819,6.基金项目
国家自然科学基金资助项目(51077124) （51077124）
