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Load positioning and power constant control method for three-dimensional wireless charging system

A technology of wireless charging and constant power, which is applied in the direction of current collectors, electric vehicles, electrical components, etc., can solve the problems of weakening mutual inductance of transmitting and receiving coils, reducing system transmission performance, and unsatisfactory problems, so as to achieve large receiving power, improve use efficiency, and increase The effect of service life

Active Publication Date: 2020-04-24
SOUTHEAST UNIV
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  • Claims
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Problems solved by technology

However, at present, most of the two-dimensional wireless charging systems are used, and the transmitting and receiving coils have a "one-to-one" correspondence, and when the receiving coils are offset horizontally, vertically or angularly, the mutual inductance between the transmitting and receiving coils will be correspondingly weakened, thus The transmission performance of the system is reduced. In order to solve this problem, those skilled in the art are also constantly trying, but the current technical solutions are not ideal. Therefore, a positioning method of the load in the space range and the load in different postures are required. Power stability control method to improve the flexibility and economy of wireless charging system applications

Method used

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  • Load positioning and power constant control method for three-dimensional wireless charging system
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  • Load positioning and power constant control method for three-dimensional wireless charging system

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Embodiment 1

[0042] Embodiment 1: refer to figure 1 , figure 2 , a three-dimensional wireless charging system load positioning and power constant control method, comprising the following steps:

[0043]Step 1: Establish the magnetic circuit model and circuit model of the three-dimensional wireless power transfer system, and obtain the constraint relationship between mutual inductance, input power, output power and system efficiency through circuit analysis;

[0044] Such as figure 1 is the magnetic circuit model of the three-dimensional wireless power transfer system, in which the three-dimensional wireless power transfer system is composed of three orthogonal coils, and they are located in the xy plane, xz plane and yz plane respectively, and each transmitting coil is coupled with the receiving coil, denoted Mutual inductance values ​​are M 1 , M 2 and M 3 . In addition, since each transmitting coil is orthogonal to each other, the mutual inductance value between any two transmitti...

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Abstract

The invention discloses a load positioning and power constant control method for a three-dimensional wireless charging system. The method comprises the steps of establishing a magnetic circuit model and a circuit model of a three-dimensional wireless power transmission system, obtaining a constraint relationship of each parameter variable through circuit analysis, obtaining positions (magnetic positions) of loads under different degrees of freedom based on the constraint relationship, and realizing spatial positioning of the loads; meanwhile, determining an optimization target and constraint conditions of the three-dimensional wireless charging system under known parameters , then converting a nonlinear programming problem into a linear programming problem; and finally, realizing the constant load receiving power in a linear programming mode. According to the invention, position (magnetic position) identification of the load under different degrees of freedom can be realized; the constant load receiving power is realized on the basis; and theoretical guidance and technical support can be provided for application and development of the three-dimensional wireless charging system.

Description

technical field [0001] The invention relates to a load positioning and constant power control method of a three-dimensional wireless charging system, belonging to the technical field of wireless energy transmission. Background technique [0002] In recent years, Wireless Power Transmission (WPT) technology has been widely used in fields such as electric vehicles, mobile phones, and implanted medical devices. However, at present, most of the two-dimensional wireless charging systems are used, and the transmitting and receiving coils have a "one-to-one" correspondence, and when the receiving coils are offset horizontally, vertically or angularly, the mutual inductance between the transmitting and receiving coils will be correspondingly weakened, thus The transmission performance of the system is reduced. In order to solve this problem, those skilled in the art are also constantly trying, but the current technical solutions are not ideal. Therefore, a positioning method of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J50/12H02J50/40H02J50/70H02J50/80
CPCH02J50/12H02J50/40H02J50/70H02J50/80
Inventor 谭林林钟汝莹汤宗尧黄学良李佳承
Owner SOUTHEAST UNIV
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