随着石油钻井行业的不断发展，方便、持久地井下仪器仪表的供电一直是个难题。本文基于磁谐振耦合的机理，实现了无线电能传输系统的设计。通过对谐振电路的反射阻抗对于发送端的影响的分析，以及谐振频率变化产生的影响的分析，设计了基于CD4046的频率跟踪式无线电能传输的电路。实验证明，加入频率跟踪式电路之后，能够实现高效的无线电能传输。%With the development of petroleum drilling industry, it is always a difficult problem to charge for the underground instrumentation conveniently and durably. This paper permits the design of wireless power transmission system based on the mechanism of magnetic resonant coupling. Through the analysis of the influence of the reflected impedance of the resonance circuit on the transmitter, and the influence of resonance frequency variation. The experiment designed a circuit of frequency tracking wireless power transmission based on CD4046. The experiment result shows that with the help of frequency tracking circuit, it can realize high efficient wireless power transmission.
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