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:
Jun. 16, 2026
Filed:
Apr. 22, 2024
Goodrich Actuation Systems Limited, Shirley, GB;
Mohamed Elsayed Rashed Mohamed Alabassy, Nottingham, GB;
Maamar Benarous, Coventry, GB;
GOODRICH ACTUATION SYSTEMS LIMITED, Shirley, GB;
Abstract
A control scheme for starting a dual channel permanent magnet motor drive system under a one-switch short circuit (OSSC) fault of one channel. The power inverter topology is selected such that in the event of an OSSC fault affecting a channel, the power inverter is operable to produce intermittent assistive torque using the remaining switches. During start-up, before driving the rotor in continuous rotation, the rotor is moved from its initial angular position to a position where it can provide assistive torque. In this way, the rotor position can be optimised to achieve the benefit of the assistive torque from the faulty channel, thus allowing start-up under overload conditions.