【摘要】 磁耦合谐振式的传能方式是目前最具发展前景的无线电能传输方式之一。在磁耦合谐振无线电能传输系统中,系统的频率变化对系统效率影响十分明显。为了提高无线电能传输系统的效率,利用DSP锁相原理设计了一套频率跟踪系统,采用基于第一频率校正和后频率相位同校正的频率跟踪方法,解决了系统在高频或频率变化比较大的情况下,频率跟踪缓慢的问题。仿真与实验结果表明:与未加跟踪的系统对比,效率提升明显,系统传输更加可靠。具有频率跟踪的系统有更好的传输性能,以及更高的传输效率。更多还原

【Abstract】 The magnetic coupling resonant energy transfer mode is one of the most promising wireless energy transmission methods. In the magnetic coupled resonant wireless energy transmission system,the frequency variation of the system has a significant impact on system efficiency. In order to improve the efficiency of the wireless energy transmission system. The frequency tracking system is designed by using the principle of DSP phase lock. It uses a frequency tracking method based on the first frequency correction and the post-frequency phase correction to solve the problem and when the frequency changes frequently or the frequency is relatively large. Simulation and experimental results show,compared with the untracked system,the efficiency is improved significantly and the system transmission is more reliable. Systems with frequency tracking have better transmission performance and higher transmission efficiency.更多还原