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Method for measuring resonant frequency of coil and applicable to wireless power transmission system

A technology of wireless energy transmission and coil resonance, which is applied in the electrical field, can solve problems such as resonance frequency errors, and achieve the effects of strong practicability, overcoming large errors, and simplifying analysis methods

Inactive Publication Date: 2019-04-12
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

The measurement method is applicable to the measurement of the resonant frequency of the coil in the wireless power transmission system, simplifies the analysis method, overcomes the shortcomings of the traditional measurement method in the case of high frequency, such as large error and complicated test of the resonant frequency of the coil, and is suitable for Coils of different frequencies and sizes can also effectively measure their resonant frequencies, laying a good foundation for the practical application of wireless power transmission in the future

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  • Method for measuring resonant frequency of coil and applicable to wireless power transmission system
  • Method for measuring resonant frequency of coil and applicable to wireless power transmission system
  • Method for measuring resonant frequency of coil and applicable to wireless power transmission system

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0035] see figure 1 , the coil resonant frequency measurement method applicable to the wireless power transmission system provided by the present invention, the measurement method mainly includes the following steps:

[0036] Step 1, providing a measurement system, the measurement system includes two identical single coils, and the two single coils are arranged at intervals, wherein the two sin...

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Abstract

The invention belongs to the technical field related to new technology on electrical engineering, and discloses a method for measuring the resonant frequency of a coil and applicable to a wireless power transmission system. The method comprises the following steps that (1) a measuring system is provided, the measuring system comprises two identical and spaced single-wire coils which are used as atransmitting coil and a receiving coil separately, the transmitting coil is connected with an alternating current power supply, and the receiving coil is connected with a load, meanwhile, a coil to bemeasured in the wireless power transmission system is placed between the transmitting coil and the receiving coil, and the distance between the coil to be measured and the transmitting coil is equalto the distance between the coil to be measured and the receiving coil; and (2), a variation curve of scattering parameter module values of the measuring system with the frequency of the alternating current power supply is obtained, wherein the frequency of the alternating current power supply corresponding to the peak value of the variation curve is the resonant frequency of the coil to be measured. The method for measuring the resonant frequency of the coil and applicable to the wireless power transmission system improves the accuracy and efficiency and simplifies the analytical method.

Description

technical field [0001] The invention belongs to the technical field related to electrotechnical technology, and more specifically relates to a coil resonance frequency measurement method suitable for a wireless power transmission system. Background technique [0002] With the penetration of electrical automation into all aspects of people's production and life, although the traditional "wired" power transmission method has been widely used, there are disadvantages such as potential safety hazards and damage to the appearance, which can no longer meet the application requirements. Therefore, wireless power transfer (WPT) technology has attracted widespread attention of many researchers and has become a major research hotspot in the current era. WPT technology can avoid the shortcomings of traditional "wired" transmission, and has practical application value and broad application prospects in the fields of portable communication, smart home, transportation, medical equipment, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R23/02
CPCG01R23/02
Inventor 刘明海曾颖琴荣灿灿胡朝阳陶雄路聪慧
Owner HUAZHONG UNIV OF SCI & TECH
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