Test judgment method of influence on coexistence among multiple groups of systems by wireless power transmission system parameter

A technology of wireless charging and system parameters, applied in the direction of the magnitude/direction of the magnetic field, measuring devices, measuring electrical variables, etc., can solve problems such as the impact of the coexistence of wireless charging systems and the meaninglessness of construction, and achieve strong engineering guidance Significance, the effect of strong precision
CN109765504AActive Publication Date: 2019-05-17SOUTHEAST UNIV +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2019-05-17

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Abstract

The invention discloses a test judgment method of influence on coexistence among multiple groups of systems by a wireless power transmission system parameter. The method comprises the following steps:selecting the own parameters of a wireless power transmission system and parameters among multiple groups of systems, and analyzing test ranges of the parameters; testing magnetic field strength change of the wireless power transmission system in a certain range and the self-inductance and mutual-inductance parameters of the own primary secondary side coil of the wireless power transmission system through a control variable method, and testing magnetic field change when the inter-system distance is changed by changing the distance between a measurement point and the wireless power transmission system; and combining the magnetic field strength and the own coupling coefficient of the wireless system to obtain a new coefficient Q, and judging the influence on the inter-system coexistence bythe parameters; and selecting the parameter with low Q value as an advantage parameter so as to determine the wireless power transmission system with the minimum influence on the coexistence among multiple groups of systems. Through the method disclosed by the invention, the wireless power transmission system most suitable for the inter-system coexistence can be judged, and the model reference andthe method basis are provided for the construction of multiple wireless power transmission systems or large-scale wireless power transmission regions in the future.
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Description

technical field

[0001] The present invention relates to a method for judging the coexistence of parameters of a wireless charging system, in particular to a method for testing and judging the influence of parameters of a wireless charging system on the coexistence of multiple systems, and belongs to the problem of the coexistence of multiple sets of wireless charging systems in the technical field of wireless charging systems. . Background technique

[0002] Currently, there are mainly two types of charging methods for electric vehicles: wired charging and wireless charging (Wireless Power Transmission, WPT). The wireless charging technologies suitable for electric vehicles mainly include electromagnetic induction and magnetic coupling resonance. Compared with electromagnetic induction, Magnetically-Coupled Resonant Wireless Power Transmission (MCR-WPT) has advantages in transmission distance and transmission efficiency, which can be realized by relying on induction, magnet...

Claims

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