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:
Apr. 29, 2014
Filed:
Jan. 10, 2013
Abb Research Ltd, Zurich, CH;
ABB Research Ltd., Zurich, CH;
Abstract
Exemplary embodiments are directed to a gate drive circuit and a method for controlling a gate-controlled component. The gate drive circuit includes a PI controller that receives an input reference signal (v) controls a gate voltage of the gate-controlled component. The gate drive circuit also includes a first feedback loop for the PI controller adapted to provide feedback from a time derivative of a collector-to-emitter voltage (v) of the controlled component. The first feedback loop has a first gain (k). A second is provided in the gate drive circuit feedback loop for the PI controller that provides feedback from the time derivative of the collector current (i) of the controlled component. The second feedback loop has second gain (k) and includes a clipping circuit that modifies the feedback signal in the second feedback loop during turn-on of the controlled component when the time derivative of the collector current is negative.