Optimal frequency configuration method of single-repeater wireless power transmission system

Abstract

The invention discloses an optimal frequency configuration method of a single-repeater wireless power transmission system. The single-repeater wireless power transmission system comprises a high-frequency power supply system, a transmitting coil, a repeating coil and a receiving coil. According to the configuration method, with a low coupling coefficient as an entry point, a transmission efficiency expression and a receiving power expression of the single-repeater wireless power transmission system are calculated; and with the working frequency of the system and self-resonant frequencies of various coil circuits as independent variables, the configuration method for various frequency parameters at the optimal transmission efficiency is obtained, so that the configuration method for the working frequency and the self-resonant frequencies of various coil circuits at the maximum receiving power is discussed on the basis of the optimal transmission efficiency. With the optimal transmission efficiency and the maximum receiving power of the wireless power transmission system comprising the repeating coil as targets, a set of complete frequency configuration method is provided; and the key problem of the wireless power transmission system comprising the single repeating coil in the design is solved.

Description

technical field [0001] The invention relates to an optimal frequency configuration method of a wireless power transmission system with a single relay coil, in particular to a configuration method between the system operating frequency and the self-resonant frequency of each coil loop under the 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 themse...

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 increase the transmission distance of the wireless power transmission system, many scholars at home and abroad have adopted the method of adding relay coils to increase the transmission distance of the system, but no one has studied the frequency configuration method under the optimal transmission performance.

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