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Nonlinear wireless electric energy transmission system and method with variable coupling coefficient stability

A technology of wireless power transmission and coupling coefficient, applied in electrical components, circuit devices, etc., can solve the problems of inability to enter the industrial field from the laboratory, poor system stability, complex control circuits, etc., to avoid system performance degradation, easy to commercialize The effect of applying and simplifying the system structure

Pending Publication Date: 2021-04-23
NANYANG INST OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] However, traditional research methods do not break through the limitations of linear resonance, resulting in poor system stability, or the control circuit is too complicated and the cost is too high, so that it cannot smoothly enter the industrial field from the laboratory

Method used

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  • Nonlinear wireless electric energy transmission system and method with variable coupling coefficient stability
  • Nonlinear wireless electric energy transmission system and method with variable coupling coefficient stability
  • Nonlinear wireless electric energy transmission system and method with variable coupling coefficient stability

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Embodiment Construction

[0032] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently the described embodiments are only a part of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of this patent.

[0033] figure 1 It is the overall block diagram of the variable inductance scheme system of the present invention. Depend on figure 1It can be seen that the wireless power transmission system based on the variable inductance nonlinear resonance of the secondary side proposed by the present invention includes a primary side 100 and a secondary side 200, and the primary side 100 includes primary and secondary electrical connections. The side AC power supply 160, the primary side rectification filter unit 110, the primary side DC / DC unit 120, the primary si...

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Abstract

The invention discloses a wireless power transmission method and device with variable coupling coefficient stability. The system comprises a primary side rectifying and filtering unit, a primary side high-frequency inverter, a primary side DC / DC unit, a primary side linear topological structure, a primary side transmitting coil, a secondary side receiving coil, a secondary side parallel capacitor, a secondary side variable inductor or capacitor structure, a secondary side rectifying and filtering unit and the like; the secondary side variable inductor or capacitor structure comprises at least one linear inductor L2 or linear capacitor C3 working in a switching state. The output voltage waveform is between a sine wave and a square wave, automatic voltage stabilization and spectrum spreading under the condition of a variable coupling coefficient can be achieved, and participation of an active control device is not needed. The stability of the system does not depend on communication feedback, and therefore, the reliability of the system is high, and the cost of the system is low; high efficiency and stability of wireless power transmission can be maintained when the coupling coefficient changes.

Description

technical field [0001] The invention belongs to the wireless power transmission technology in the field of electrical engineering, and specifically relates to a magnetic-field coupled wireless power transmission device (Magnetic-field coupled power transmission), which uses natural or artificial variable inductance or nonlinear resonance of inductance to improve the traditional A wireless power transmission system, thereby improving the transmission distance and transmission stability of the system, specifically discloses a nonlinear wireless power transmission system with variable coupling coefficient stability and its implementation method. Background technique [0002] In recent years, due to the needs of social development and technological progress, wireless power transmission technology has achieved rapid development. Among them, the magnetic field coupled wireless power transmission technology is expected to be widely used in commercial applications in the fields of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12
CPCH02J50/12
Inventor 樊京李定珍
Owner NANYANG INST OF TECH
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