Magnetic resonance coupling wireless energy transmission system
A technology of wireless energy transmission and magnetic resonance coupling, applied in electromagnetic wave systems, electrical components, circuit devices, etc., can solve problems such as uncertain resonance frequency, unstable transmission efficiency, energy loss, etc., to ensure stability and good practical value and the effect of promoting value and reducing loss
Inactive Publication Date: 2012-11-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
[0004] The purpose of the present invention is to provide a magnetic resonance coupling wireless energy transmission system, which mainly solves the problem in the prior art that the transmission efficiency is unstable due to the uncertainty of the resonance frequency and the energy loss is caused.
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[0020] Such as figure 1 As shown, the magnetic resonance coupled wireless energy transfer system includes sequentially connected AC power supply, AC-DC converter, drive amplifier, first resonance compensation circuit, first PCB induction antenna, second PCB induction antenna, and second resonance compensation circuit , a rectifying and filtering circuit, a voltage stabilizing circuit, a load, and a PWM driving circuit connected to the output of the drive amplifier, the first PCB induction antenna is connected to the input of the PWM driving circuit through a frequency tracking circuit.
[0021] Among them, the AC power supply and the AC-DC converter connected to its output end constitute a DC power supply; the PWM drive circuit connected to the output end of the drive amplifier and the frequency tracking between the output end of the first PCB induction antenna and the input end of the PWM drive circuit The circuit constitutes a phase-locked loop frequency tracking circuit; th...
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The invention discloses a magnetic resonance coupling wireless energy transmission system. The problem in the prior art that the transmission efficiency is low because resonance frequency of energy in the transmission process is not determined is mainly solved. The magnetic resonance coupling wireless energy transmission system comprises a direct-current power supply, a drive amplifier, a phase locked loop frequency tracking circuit, a resonance antenna system and a receiving circuit, wherein the input end of the drive amplifier is connected with the direct-current power supply; the phase locked loop frequency tracking circuit and the resonance antenna system are connected with the output end of the drive amplifier; the receiving circuit is connected with the output end of the resonance antenna system; and the resonance antenna system is also connected with the input end of the phase locked loop frequency tracking circuit. According to the scheme, the aim of reducing the loss of the energy in the transmission process is fulfilled, and the magnetic resonance coupling wireless energy transmission system has a relatively high practical value and a relatively high promotional value.
Description
technical field [0001] The present invention relates to a wireless energy transmission system, in particular to a magnetic resonance wireless energy transmission system. Background technique [0002] Magnetic resonance coupling wireless energy transmission is a new energy transmission technology that is still in its infancy. This technology can effectively overcome the problems of poor equipment movement flexibility, unsightly environment, easy contact sparks, and power supply line exposure in wired power supply methods. , because in the process of using magnetic resonance coupling wireless energy transfer technology to transmit electric energy, external obstacles, receiving end loads, and circuit operating temperature changes will cause changes in the inductance of the transceiver coil in the resonant circuit, thereby causing changes in the resonant frequency, that is, loss of Harmonic, which will seriously affect the transmission efficiency of electric energy. [0003] In...
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Login to View More IPC IPC(8): H02J17/00H02J50/12
Inventor 刘佳奇王珑李乐伟廖余立
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA