As a key technology in the magnetically coupled resonant wireless power transmission system,frequency tracking technology can effectively avoid the influence of other factors on the output characteristics.This paper firstly describes the basic principle and frequency characteristics of MCR-WPT system,and then introduces the effects of frequency on maximum transmission power,maximum transmission efficiency,and output voltage under different coupling states.It lists the research methods of frequency tracking technology for tracking maximum transmission power,maximum transmission efficiency and constant voltage,analyzes the advantages and disadvantages of the cor-responding technologies,and finally summarizes the urgent problems to be solved by the frequency tracking technol-ogy and its development prospect,and looks forward to the future research direction.
关键词
综述/无线电能传输/磁耦合/频率追踪技术
Key words
review/wireless power transmission/magnetic coupling resonance/frequency tracking technology
维普
万方数据