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A magnetic resonance wireless energy transmission system and an optimization method for its coil position

A wireless energy transmission and optimization method technology, applied in the field of energy transmission, can solve the problem of limited transmission distance and achieve the effect of maximizing the transmission distance

Inactive Publication Date: 2016-04-13
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the four coils of the current wireless energy transfer system based on magnetic resonance are arranged at uniform intervals, which leads to a limited transmission distance of the system. Therefore, the optimal design method of the coil position is based on the wireless energy transfer system of magnetic resonance. One of the key technologies

Method used

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  • A magnetic resonance wireless energy transmission system and an optimization method for its coil position
  • A magnetic resonance wireless energy transmission system and an optimization method for its coil position
  • A magnetic resonance wireless energy transmission system and an optimization method for its coil position

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Experimental program
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Effect test

Embodiment 1

[0087] The magnetic resonance wireless energy transfer module 2 in the embodiment of the present invention has a drive coil Ld and a load coil L1 that are both circular coils with a radius of 30 cm. Both the transmitting coil Lt and the receiving coil Lr are helical coils with a radius of 30 cm, a length of 20 cm, and a number of turns of 5.25. The tuning capacitors Cd, Ct, Cr and Cl are all variable capacitors, which are convenient for adjusting the resonance frequency to the working frequency, which is 10 MHz in this embodiment. The distance between the driving coil Ld and the transmitting coil Lt is d12, the distance between the transmitting coil Lt and the receiving coil Lr is d23, and the distance between the receiving coil Lr and the load coil Ll is d34. Then determine the coil position for the maximum transmission efficiency of the system by the following steps:

[0088] (1) Establish a system model in FEKO;

[0089] (2) Fix d23=150cm, set d12=d34, change from 5cm to ...

Embodiment 2

[0098] The magnetic resonance wireless energy transfer module 2 in the embodiment of the present invention has a drive coil Ld and a load coil L1 that are both circular coils with a radius of 30 cm. Both the transmitting coil Lt and the receiving coil Lr are helical coils with a radius of 30 cm, a length of 20 cm, and a number of turns of 5.25. The tuning capacitors Cd, Ct, Cr and Cl are all variable capacitors, which are convenient for adjusting the resonance frequency to the working frequency, which is 10 MHz in this embodiment. The distance between the driving coil Ld and the transmitting coil Lt is d12, the distance between the transmitting coil Lt and the receiving coil Lr is d23, and the distance between the receiving coil Lr and the load coil Ll is d34. When the transmission efficiency is required to be greater than 80% and the transmission distance is the longest,

[0099] (1) Establish a system model in FEKO;

[0100] (2) Fix d23=150cm, set d12=d34, change from 5cm ...

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Abstract

The invention provides a magnetic resonance wireless energy transmission system and an optimization method of positions of coils of the magnetic resonance wireless energy transmission system. The magnetic resonance wireless energy transmission system and the optimization method mainly solve the problem of the placing positions of the coils of the wireless energy transmission system based on magnetic resonance. If the transmission efficiency of the magnetic resonance wireless energy transmission system is required to be the highest, the distance between a drive coil and a transmitting coil is half of the radius of the coils, the distance between the transmitting coil and a receiving coil is twice the radius of the coils, and the distance between the receiving coil and a load coil is half of the radius of the coils. The magnetic resonance wireless energy transmission system and the optimization method of the positions of the coils of the magnetic resonance wireless energy transmission system are suitable for wireless power supply systems long in transmission distance and high in transmission efficiency. Through the optimal arrangement of the positions of the drive coil, the transmitting coil, the receiving coil and the load coil, the transmission distance of the magnetic resonance wireless energy transmission system can be maximized under the premise that certain transmission efficiency is ensured.

Description

technical field [0001] The invention relates to the technical field of energy transmission, in particular to a magnetic resonance wireless energy transmission system and a coil position optimization method thereof. Background technique [0002] The development of wireless technology, including wireless signal transmission and wireless energy transmission, is in full swing, and it has increasingly penetrated into every aspect of our life, constantly affecting and changing our daily life. With the rise of cloud computing and the Internet of Things, computing and environment-aware smart devices will spread all over the world, and the earth we live in will become a "smart earth". In order to realize this vision, a series of key technologies are needed, and wireless energy transmission is one of the key technologies. The wireless energy transmission technology will free the terminal from the shackles of the power line, and has great flexibility and wide adaptability. This techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02J50/90G06F19/00
Inventor 石新智祁昶王高峰
Owner WUHAN UNIV