一种适用于磁耦合谐振无线能量传输系统的新型小尺寸谐振器的仿真与实验

Simulation and Experiment Research of a New Small Size Resonator Used in Magnetic Coupling Resonance Wireless Energy Transmission System

磁耦合谐振式无线能量传输系统作为一种新的无线能量传输方式为小型家用电器、体内植入器件等提供了一种快捷、方便、安全的能量供给方式。在为上述器件进行能量传递时,由于接受能量的物体体积较小,设计一种小尺寸的谐振器十分必要。本文应用耦合模理论推导出磁耦合谐振无线能量传输系统传输规律,应用Ansoft软件对该系统谐振器的谐振频率进行仿真分析,得出谐振器各参数变化对谐振频率的影响规律,仿真结果与实验结果高度一致。在此基础上设计出一种小尺寸的谐振器,该谐振器体积1.35cm3,可以满足小型家用电器等用电设备的要求,具有很好的应用前景。

Magnetic coupling resonance wireless energy transmission is a new technology, which provides fast, convenient and safe energy supply for small size household electrical appliances, body implanted devices and so on. In this technology, it is necessary to design small size resonators for the above devices for energy transfer. Here, a new kind small size resonator, which is 1.35 cm3 in volume, is designed. This design is based on the coupled-mode theory （CMT）, which is applied to explain the magnetic coupling resonance system＇s transmission rule. Extensive simulations have been conduced to validate the design. The Ansoft software is used in the simulation of the resonator＇s resonance frequency. The relationships between resonator parameters and resonant frequency are obtained. It is found that the simulations are consistent well with experimental results and the resonator can meet the requirements of small size electrical appliances.