Working frequency optimization method of wireless power transmission system based on three-coil structure

Abstract

The invention discloses a working frequency optimization method of a wireless power transmission system based on a three-coil structure. The working frequency optimization method comprises the following steps: 1, determining the resonant frequency f of the optimized wireless power transmission system, and obtaining the resonant angular frequency w0 according to the resonant frequency f; and 2, setting the angular frequency of the transmitting coil as a first peak angular frequency w2 or a second peak angular frequency w3. According to the invention, an efficiency calculation method of a three-coil structure is established through a reflection impedance principle, and the wireless transmission efficiency is improved only by adjusting the working frequency of an in-vitro transmitting power source under the condition of avoiding changing factors such as a load, a coil size structure, a distance and the like. When the wireless power supply is applied to implantable medical treatment, the defect that parameters of an in-vivo coil are difficult to adjust can be overcome under the condition that the efficiency is reduced due to a frequency splitting phenomenon, and high-efficiency wireless power supply of implantable medical treatment is realized.

Description

technical field [0001] The invention belongs to the technical field of wireless power transmission, and in particular relates to a method for optimizing a working frequency in wireless power transmission, thereby improving system transmission efficiency. Background technique [0002] With the advancement of science and technology, wireless power transmission technology has been widely used in industrial electronics, implanted medical electronics, smart home and other fields because of its characteristic of transmitting electric energy without contact, which eliminates the inconvenience of wire connection. Especially in the field of implantable medical treatment, it helps people solve the problem that the power supply of implantable medical devices requires regular surgery to replace the battery in the body, which is cumbersome and easy to cause inflammation, infection, cell necrosis and other damage. [0003] In implantable medicine, in order to maintain a stable and effecti...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the existing problem of inefficiency caused by the frequency splitting phenomenon, the present invention provides a frequency optimization method of a three-coil structure to improve transmission efficiency

Images