Different quantities of load access-based single relay multi-load wireless power transmission system work frequency stabilizing method

A technology of wireless power transmission and operating frequency, applied in the direction of electrical components, circuit devices, etc., can solve the problems of frequency stabilization methods that no one has researched, and close-fitting wireless charging that cannot meet the needs of the public.

Active Publication Date: 2016-09-07
SOUTHEAST UNIV
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Problems solved by technology

With the continuous expansion of the application field of wireless power transmission technology, close-fitting wireless charging has become increasingly unable to meet the needs of the public
In order to improve the transmission distance of the wireless power transmission system, many scholars at home and abroad have

Method used

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  • Different quantities of load access-based single relay multi-load wireless power transmission system work frequency stabilizing method
  • Different quantities of load access-based single relay multi-load wireless power transmission system work frequency stabilizing method
  • Different quantities of load access-based single relay multi-load wireless power transmission system work frequency stabilizing method

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Such as figure 1 Shown is a single-relay multi-load wireless power transmission system, including a high-frequency power supply system, a transmitting coil, a relay coil, several receiving coils, a high-frequency compensation adjustable capacitor, and a load. The high-frequency power supply system is a variable frequency Regulating voltage source; the distribution shape of the transmitting coil, relay coil and receiving coil is coaxial parallel arrangement, the form and parameters of the transmitting coil, receiving coil and relay coil may be inconsistent, but the form and parameter of each receiving coil must be the same; Each coil is connected in series with the high-frequency compensation adjustable capacitor, and the self-resonant frequency of each coil circuit can be adjusted by adjusting the high-frequency compensation adjustable capacitor, and the energy ...

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Abstract

The present invention discloses a different quantities of load access-based single relay multi-load wireless power transmission system work frequency stabilizing method. The single relay multi-load wireless power transmission system includes a high-frequency power system, a transmit coil, a plurality of receive coils, and a relay coil. The method includes the steps of on the basis of balance power allocation of the receive coils, setting an overall space distribution manner of the receive coils, then deducing a system work frequency and a relationship between all coil loop self-resonant frequencies under the conditions of optimal transmission efficiency and maximum receive power, obtaining factors affecting system working frequency, and adjusting the system work frequency by changing a distribution diameter of different quantities of receive coils, so as to maintain the system work frequency unchanged to keep charging power of each load balanced. Through adoption of the method, a major problem of the wireless power transmission system including the single relay multi-load mode is solved, and a clearer guide for multi-load application of the wireless power transmission system in a middle-long range is provided.

Description

technical field [0001] The invention relates to a method for stabilizing the operating frequency of a single-relay multi-load wireless power transmission system based on different numbers of loads connected, in particular to a method for stabilizing the operating frequency of the system under optimal transmission efficiency and maximum received power targets. Background technique [0002] In recent years, due to the friendliness and convenience of wireless power transmission technology that does not require cable connection, this technology has been applied in many industrial occasions. In contrast, in special fields such as deep sea, coal mine, and chemical industry, the traditional cable contact transmission method has many disadvantages and hidden dangers. It brings a series of problems such as difficulty in line laying and maintenance, and contact sparks. Since Tesla pioneered the field of wireless power transmission, many scholars at home and abroad have devoted themsel...

Claims

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Application Information

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IPC IPC(8): H02J50/12H02J50/50
Inventor 黄学良王维李佳承潘书磊谭林林
Owner SOUTHEAST UNIV
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