An offset-adaptive reconfigurable wireless power transfer system

A wireless energy transmission and self-adaptive technology, applied in circuit devices, electrical components, etc., can solve the problems of reduced energy transmission efficiency, reduced coil mutual inductance, and deterioration of electromagnetic environment, so as to improve energy transmission efficiency, ensure output current, and improve electromagnetic effects of the environment

Active Publication Date: 2022-06-28
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the position of the transmitting coil and the receiving coil deviates, the mutual inductance between the coils will decrease, resulting in a decrease in energy transmission efficiency, and the electromagnetic environment will also deteriorate

Method used

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  • An offset-adaptive reconfigurable wireless power transfer system
  • An offset-adaptive reconfigurable wireless power transfer system
  • An offset-adaptive reconfigurable wireless power transfer system

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Embodiment Construction

[0020] The solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] The offset-adaptive reconfigurable wireless power transmission system of the present invention, the P coils composed of magnetic flux tubes are symmetrically arranged in the coil ring gap of the double D transmitting coils, and the on-off of the magnetic flux tubes is controlled to control the switching in and out. Coil turns. When the transmitter coil and the receiver coil have position deviation, the logarithm of the P coil and the position of the P coil are controlled to compensate the mutual inductance of the transmitter coil and the receiver coil.

[0022] In order to determine the mutual inductance compensation strategy, the relevant theoretical derivation process is introduced below.

[0023] According to Bio-Savart's law, the magnetic field magnitudes at a point above and a point on the side of the reconfigurable D...

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Abstract

The invention discloses an offset-adaptive reconfigurable wireless power transmission system, which is characterized in that a P coil composed of a flux tube is symmetrically arranged in the coil ring gap of a double D transmitting coil, when the transmitting coil and the receiving When the position of the coil deviates, control the number of P coil pairs and the position of the P coil to compensate for the mutual inductance of the transmitting coil and the receiving coil. The present invention compensates the mutual inductance value when the position of the transmitting coil and the receiving coil deviates, ensures the constant output current, improves the energy transmission efficiency when the position of the transmitting coil and the receiving coil occurs, and improves the transmission coil and the receiving coil. The electromagnetic environment when the coil is displaced.

Description

technical field [0001] The present invention relates to wireless power transmission technology, in particular to an offset adaptive reconfigurable wireless power transmission system. Background technique [0002] To save traditional energy and minimize the harmful effects of environmental pollution, countries have promoted electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs). However, due to the high cost, heavy weight, and low capacity of batteries, as well as the limitation of charging infrastructure, the charging problem has become a bottleneck restricting the development of electric vehicles. Wireless charging technology can solve the limitations of charging infrastructure and safety problems faced by traditional charging, and has attracted great attention from researchers, and has gradually become the main mode of electric vehicle charging. [0003] Magnetically coupled resonant wireless power transmission technology has become the main method of wirele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/90H02J50/70H02J50/10
CPCH02J50/10H02J50/70H02J50/90
Inventor 闻枫李睿李强刘力顾伟云柯李宇宵
Owner NANJING UNIV OF SCI & TECH
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