Title：A wireless energy transmission control method
Country：China
Patent No.：201711351897.2
Legal Status：Authorized
Inventor：Guijie Zhu, Xian Tang, Songping Mai, Zhihua Wang
Assignee：Graduate School at Shenzhen, Tsinghua University; Tsinghua University
Address：Tsinghua Campus, Xili University Town, Nanshan District, Shenzhen City 518055, Guangdong Province
Filing Date：2017-12-15
Issue Date：2019-07-26
Abstract：
Provided is a wireless energy transmission control method. The method includes following steps: S1, calculating thresholds r0 and r1 according to an optimal duty ratio Dopt and a VR value determined by a pre-obtained WPT system parameter, wherein VR is a ratio of a voltage gain in a 2X mode to a voltage gain in a 1X mode of a system; S2, for a to-be-controlled WPT system, measuring a voltage gainVRx of the to-be-controlled WPT system in the 1X mode and the 2X mode, namely VRx=A2Xx/A1Xx; and S3, comparing the voltage gain VRx and the thresholds r0 and r1, adjusting a supply voltage Vp of a transmitting terminal to enable the work duty ratio to be 0 if VRx<=r0, adjusting the supply voltage Vp of the transmitting terminal to enable the work duty ratio to be 50% if r0=r1. According to the method, the energy transmission efficiency of the WPT system can be improved, and the operating range of the WPT system is extended.
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