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.

Date of Patent:
Sep. 29, 2020

Filed:

Feb. 26, 2020
Applicant:

Abb Schweiz Ag, Baden, CH;

Inventors:

Yuzhi Zhang, Apex, NC (US);

Utkarsh Raheja, Raleigh, NC (US);

Pietro Cairoli, Cary, NC (US);

Assignee:

ABB Schweiz AG, Baden, CH;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/08 (2006.01); H03K 17/567 (2006.01); H02H 3/00 (2006.01); H02H 5/00 (2006.01); H03K 17/687 (2006.01); H03K 17/735 (2006.01);
U.S. Cl.
CPC ...
H03K 17/687 (2013.01); H03K 17/735 (2013.01);
Abstract

Systems, methods, techniques and apparatuses of power switch control are disclosed. One exemplary embodiment is a power switch comprising a thyristor-based branch including a thyristor device; a FET-based branch coupled in parallel with the thyristor-based branch and including a FET device; and a controller. The controller is structured to turn on the FET device, turn on the thyristor device after turning on the FET device based on a thyristor voltage threshold, and update the thyristor voltage threshold based on a voltage measurement corresponding to the thyristor-based branch measured while the thyristor device is turned on.


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