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

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 ...

AI Technical Summary

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

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