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. 20, 2021
Filed:
Jan. 14, 2019
Abb Schweiz Ag, Baden, CH;
ABB Schweiz AG, Baden, CH;
Abstract
A method and an apparatus for determining switching delay times of power semiconductor switch components in parallel connected half bridge legs in which two or more power semiconductor switches are controlled in parallel. The method includes providing a gate control signal to gate drivers of the parallel connected power semiconductor switch components, determining collector to emitter voltages of the parallel connected power semiconductor switch components, and determining separate delay times for each of the parallel connected power semiconductor switch components based on the time instant of the gate control signal and the determined collector to emitter voltages or time derivatives of the determined collector to emitter voltages.