Single-relay and multi-load wireless power transmission system optimal frequency configuration method based on load power balance

Abstract

The invention discloses a single-relay and multi-load wireless power transmission system optimal frequency configuration method based on load power balance. The invention is characterized in that a single-relay and multi-load wireless power transmission system comprises a high frequency power supply system, a transmitting coil, a relay coil, and a plurality of receiving coils. The method comprises the steps of calculating the transmission efficiency of the single-relay and multi-load wireless power transmission system and a receiving power expression based on a load coil space distribution method, obtaining the configuration method of each frequency parameter under optimal transmission efficiency with a system working frequency and the self-resonant frequency of each coil loop as independent variables, and discussing the working frequency in a maximum receiving power and each coil loop self-resonant frequency configuration method on the basis of the optimal transmission efficiency. According to the method, the key problem of the wireless power transmission system comprising a single-relay and multi-load mode is solved, and a definite guidance is provided for the multi-load application of the wireless power transmission system in the middle and long distances.

Description

technical field [0001] The present invention relates to an optimal frequency configuration method for a single-relay multi-load wireless power transmission system based on load power balancing, in particular to charging power balancing among multiple loads and a system under optimal transmission efficiency and maximum receiving power targets The configuration method between the working frequency and the self-resonant frequency of each coil circuit. 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...

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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 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 improve the transmission distance of the system, but for the frequency configuration method under the optimal transmission performance, especially the frequency configuration when multiple loads are connected method but no research

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