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Offset-adaptive reconfigurable wireless power transmission 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: 2019-03-22
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Offset-adaptive reconfigurable wireless power transmission system
  • Offset-adaptive reconfigurable wireless power transmission system
  • Offset-adaptive reconfigurable wireless power transmission system

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Embodiment Construction

[0020] The solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] The offset-adaptive reconfigurable wireless power transmission system of the present invention symmetrically arranges P coils composed of magnetic flux tubes in the coil ring gap of the double D transmitting coil, and controls the switching and switching by controlling the on-off of the magnetic flux tubes. Coil turns. When the position of the transmitting coil and the receiving coil deviates, the P coil logarithm and the position of the P coil are controlled to compensate for the mutual inductance of the transmitting coil and the receiving coil.

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

[0023] According to Biot Savart's law, the magnitude of the magnetic field at a point above and on the side of the reconfigurable DDP c...

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Abstract

The invention discloses an offset-adaptive reconfigurable wireless power transmission system. The offset-adaptive reconfigurable wireless power transmission system is characterized in that P coils composed of a flux tube are symmetrically disposed in a coil loop gap of a double D transmitting coil, and when the position of the transmitting coil and the position of a receiving coil offset, the number of the switched P coil pairs and the position of the switched P coils are controlled so as to perform compensation of mutual inductance of the transmitting coil and the receiving coil. The offset-adaptive reconfigurable wireless power transmission system compensates the mutual inductance value when the position of the transmitting coil and the position of the receiving coil offset, ensures theconstant output current, improves the energy transmission efficiency when the position of the transmitting coil and the position of the receiving coil offset, and improves the electromagnetic environment when the position of the transmitting coil and the position of the receiving coil offset.

Description

technical field [0001] The invention relates to wireless power transmission technology, in particular to an offset adaptive reconfigurable wireless power transmission system. Background technique [0002] In order to save traditional energy sources 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, large 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 the attention of researchers, and has gradually become the main mode of charging electric vehicles. [0003] Magnetically coupled resonant wireless power transmission technology has become the main method of ...

Claims

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Application Information

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Patent Type & Authority Applications(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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