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. 12, 2017
Filed:
Mar. 30, 2015
Abb Technology Ag, Zurich, CH;
Roman Bosshard, Aarau, CH;
Johann Walter Kolar, Zurich, CH;
Francisco Canales, Baden-Dattwil, CH;
Beat Guggisberg, Untersiggenthal, CH;
Guanghai Gong, Birmenstorf, CH;
Bernhard Wunsch, Baden-Dattwil, CH;
ABB Schweiz AG, Baden, CH;
Abstract
An exemplary inductive power transfer system having a transmitter coil and a receiver coil. A transmitter-side power converter having a mains rectifier stage powering a transmitter-side dc-bus and controlling a transmitter-side dc-bus voltage U. A transmitter-side inverter stage with a switching frequency fsupplies the transmitter coil with an alternating current. A receiver-side power converter having a receiver-side rectifier stage that rectifies a voltage induced in the receiver coil and powering a receiver-side dc-bus and a receiver-side charging converter controlling a receiver-side dc-bus voltage U. Power controllers that determine from a power transfer efficiency of the power transfer, reference values U*, U* for the transmitter and receiver side dc-bus voltages. An inverter stage switching controller controls the switching frequency fto reduce losses in the transmitter-side inverter stage.