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. 14, 2015
Filed:
Jun. 19, 2014
Abb Research Ltd, Zürich, CH;
ABB Research Ltd., Zurich, CH;
Abstract
An exemplary gate drive circuit and method are disclosed for controlling a gate-controlled component, the gate drive circuit having a PI controller adapted to receive an input reference signal and to control a gate voltage of the gate-controlled component. The gate drive circuit can include a first feedback loop for the PI controller, the first feedback loop having a first gain (k), a second feedback loop for the PI controller, the second feedback loop having a second gain (k), and a clipping circuit adapted to modify a feedback signal in the second feedback loop during turn-on of the gate-controlled component when the time derivative of the collector current is negative. The first feedback loop can include a first blanking circuit adapted to cut the feedback loop when the gate-controlled component is in a blocking state.