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)

Power Electronics

Research output: Patent

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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	WO2020226916
IPC	H02J 50/ 12 A I
Priority date	3/05/19
Publication status	Published - 12 Nov 2020

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WO2020226916A1Final published version, 1.74 MB

https://patents.google.com/patent/WO2020226916A1/

6 Patent

Active Harmonics Cancellation
Fischer, M. (Inventor), Vancu, M.-F. (Inventor), Widmer, H. P. (Inventor) & Venugopal, P. (Inventor), 9 Nov 2023, IPC No. H02M 1/ 12 A I, Patent No. US2023361566, Priority date 13 Jul 2023, Priority No. US202318352008
Research output: Patent

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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

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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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T1 - Active harmonics cancellation

AU - Fischer, Marcel

AU - Vancu, Mircea-Florian

AU - Widmer, Hans Peter

AU - Venugopal, Prasanth

PY - 2020/11/12

Y1 - 2020/11/12

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

M1 - WO2020226916

ER -

Active harmonics cancellation

Abstract

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Research output

Active Harmonics Cancellation

Active Harmonics Cancellation

Active Harmonics Cancellation

Cite this