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:
Mar. 31, 2020
Filed:
May. 16, 2017
Rolls-royce Plc, London, GB;
Mohamed Halick Mohamed Sathik, Singapore, SG;
Chandana Jayamapathi Gajanayake, Singapore, SG;
Shantha Dharmasiri Gamini Jayasinghe, Singapore, SG;
Amit Kumar Gupta, Singapore, SG;
Rejeki Simanjorang, Singapore, SG;
ROLLYS-ROYCE plc, London, GB;
Abstract
A method of monitoring the health of a semiconductor power electronic switch such as an insulated gate bipolar transistor (IGBT) is provided. The method having the steps of: measuring one or more parameters selected from the group consisting of: a rate of change of voltage across the switch; a rate of change of current through the switch, a charge present on a gate of the switch (Q), a peak overshoot voltage (V) across the switch, and a peak overshoot or reverse recovery current (I) through the switch; and estimating the health of the switch based on the measured parameter(s).