磁谐振式无线电能传输效率优化方法研究进展

无线电能传输WPT（wireless power transfer）技术作为一种新型的电能传输方式以其高可靠性、实用性和安全性而备受关注。然而WPT能否替代传统的有线输电而成为通用技术，其最关键的影响因素之一就是传输效率。首先，针对WPT技术对于传输效率优化的迫切需求，系统综述了国内外在磁耦合谐振式WPT研究领域中关于传输效率优化方法的研究进展。然后，对WPT系统的研究进展进行了综述，分别从线圈优化设计、谐振链路改进、频率控制及阻抗调节4个方面，介绍了近年来国内外关于磁耦合谐振式WPT传输效率优化方法的研究进展。最后，对WPT技术传输效率优化研究的未来发展趋势进行了展望。

Research Progress in Efficiency Optimization Methods for Magnetically-coupled Resonant Wireless Power Transfer

As a novel type of power transfer technology, wireless power transfer(WPT) has attracted much attention owing to its high reliability, practicability and security. However, whether WPT can replace the traditional wired power transfer as a general technology depends on many factors, of which transmission efficiency is the most critical. In view of the urgent need of the WPT technology for transmission efficiency optimization, the research progress in the transmission efficiency optimization methods in the research field of magnetically-coupled resonant WPT is systematically reviewed. First, the latest development in the WPT system is introduced. Then, the research progress in the magnetically-coupled resonant WPT transmission efficiency optimization methods is reviewed from four aspects, including the coil optimization design, resonant link improvement, frequency control, and impedance adjustment. Finally, the research trends of WPT transmission efficiency optimization in the future are projected.