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

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...

AI Technical Summary

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 adopted the method of increasing the relay coil to increase the transmission distance of the system, but for the method of stabilizing the working frequency under the optimal transmission performance, especially when different numbers of loads are connected The frequency stabilization method has been studied by no one

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