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. 01, 2020
Filed:
Feb. 04, 2019
Delta Electronics (Thailand) Public Co., Ltd., Samutprakarn, TH;
Ulrich Richter, Freiburg, DE;
DELTA ELECTRONICS (THAILAND) PUBLIC CO., LTD., Samutprakarn, TH;
Abstract
In a system for wirelessly transferring power from a primary side across an airgap to a secondary side, the secondary side includes two parallel resonating circuits () each including two parallel resonating paths with a series connection of a resonating inductor (), and a resonating capacitor. A rectifier () is connected to the output of each resonating path for converting the AC output (') of the resonating paths to a DC output (′). The outputs of the rectifiers () are connected in parallel to provide the AC output power () to a load such as a battery or the like. Each resonating path further includes a symmetry inductance connected in series to improve current sharing among the resonating paths and to reduce the higher harmonic portion in the resonating paths. For balancing the flux each resonating circuitincludes in a preferred embodiment of the invention a symmetry winding () wound on the same core as the resonating inductorof that resonating path where all symmetry windings () are connected in parallel to ensure optimal flux sharing.