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. 12, 2019
Filed:
Oct. 23, 2017
General Electric Company, Schenectady, NY (US);
Francesco Papini, Munich, DE;
Tiziana Bertoncelli, Garching b. Munchen, DE;
Mohamed Osama, Garching, DE;
General Electric Company, Schenectady, NY (US);
Abstract
A motor drive for driving a permanent magnet electrical machine includes an inverter having switches that are selectively operated to control current flow and terminal voltages in the electrical machine and a controller operatively connected to the inverter to control switching of the switches to control the current flow and terminal voltages in the electrical machine. The controller receives inputs regarding at least one of currents and voltages provided to the electrical machine on one or more phases, analyzes the voltages and currents to identify a fault in the electrical machine, and controls switching of the plurality of switches in the inverter to modify current flow and terminal voltages in the electrical machine based on the identified fault, with the modified current flow and terminal voltages in the electrical machine preventing demagnetization of the permanent magnets in the electrical machine.