摘要
耦合谐振无线电力传输是一种新的电力传输技术,传输距离和效率是这项技术取得突破的关键。从发生耦合谐振的收发线圈电路模型出发,找出了线圈失谐是效率降低的关键因素。进而,设计了一个频率跟随电路,通过检测线圈电流的大小,并与最大电流进行比较,而后改变线圈的自谐振频率使电流保持最大,从而实现谐振频率对发射源频率的跟随,减小失谐对传输效率的影响,提高耦合谐振电力无线传输的效率。
The coupled resonant wireless power transmission is a new power transmission technology which is restricted by transmission distance and efficiency to obtain the key breakthrough. On the basis of transceiver coil circuit coupled resonance mod- el, the coil detuning is identified, which is the key factor to reduce efficiency. Therefore, A novel design named fi＇equency-follower circuit is proposed. By comparing the current size of detection coil with the maximum current, and then to change the self-reso- nant frequency of the coil to make the current maintain maximum, it can achieve that the resonant frequency can follow the fre- quency of the emission source, and reduce the impact of coil detuning to the transmission efficiency. At last, it can improve the efficiency of the wireless transmission of power coupled resonator.
出处
《微型机与应用》
2013年第8期58-60,共3页
Microcomputer & Its Applications
关键词
耦合谐振
失谐
频率跟随
收发线圈
resonant
detuning
frequency tracking
receiving and emission coil
