The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 2021
Filed:
Dec. 12, 2019
University of Macau, Macau, CN;
Zhicong Huang, Macau, CN;
Chi-Seng Lam, Macau, CN;
Pui-In Mak, Macau, CN;
Rui Paulo Da Silva Martins, Macau, CN;
University of Macau, Macau, CN;
Abstract
An exemplary embodiment of the present invention is a wireless power transmission circuit that provides power to a load of variable resistance with an alternating current (AC) power source induced at a secondary coil in a secondary side of the circuit by a primary coil in a primary side of the said circuit. The wireless power transmission circuit includes a switch-controlled capacitor (SCC) and a semi-active rectifier (SAR). The SCC connects to the AC power source. The SCC includes a first capacitor connected in parallel with two electrically controllable switches in series. The SAR connects to output of the SCC for rectifying the output of the SCC, wherein the SAR comprises a bridge circuit that includes two electrically controllable switches. A control angle of the SCC and a conduction angle of the SAR are regulated to provide a load impedance that matches the impedance of the coils.