Active Harmonics Cancellation

Marcel Fischer; Mircea-Florian Vancu; Hans Peter Widmer; Prasanth Venugopal

Active Harmonics Cancellation

Marcel Fischer (Inventor), Mircea-Florian Vancu (Inventor), Hans Peter Widmer (Inventor), Prasanth Venugopal (Inventor)

Research output: Patent

Abstract

Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.

Original language	English
Patent number	US2023361566
IPC	H02M 1/ 12 A I
Priority date	13/07/23
Publication status	Published - 9 Nov 2023
Externally published	Yes

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https://patents.google.com/patent/US20230361566A1/

6 Patent

Active Harmonics Cancellation
Fischer, M. (Inventor), Vancu, M.-F. (Inventor), Widmer, H. P. (Inventor) & Venugopal, P. (Inventor), 12 Jan 2023, IPC No. H02M 1/ 12 A I, Patent No. US2023010790, Priority date 15 Sept 2022, Priority No. US202217932615
Research output: Patent

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Active Harmonics Cancellation
Fischer, M. (Inventor), Vancu, M.-F. (Inventor), Widmer, H. P. (Inventor) & Venugopal, P. (Inventor), 18 Feb 2022, IPC No. H02J 50/ 12 A I, Patent No. CN114072308, Priority date 24 Apr 2020, Priority No. WO2020US29920
Research output: Patent

Open Access
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Aktive oberwellenunterdrückung
Translated title of the contribution: Active Harmonics CancellationFischer, M. (Inventor), Vancu, M.-F. (Inventor), Widmer, H. P. (Inventor) & Venugopal, P. (Inventor), 9 Mar 2022, IPC No. H02J 50/ 12 A I, Patent No. EP3962769, Priority date 24 Apr 2020, Priority No. WO2020US29920
Research output: Patent

Open Access

Cite this

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title = "Active Harmonics Cancellation",

abstract = "Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.",

author = "Marcel Fischer and Mircea-Florian Vancu and Widmer, {Hans Peter} and Prasanth Venugopal",

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AU - Fischer, Marcel

AU - Vancu, Mircea-Florian

AU - Widmer, Hans Peter

AU - Venugopal, Prasanth

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Y1 - 2023/11/9

N2 - Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.

AB - Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.

M3 - Patent

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ER -

Active Harmonics Cancellation

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