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:
Jul. 25, 2023
Filed:
Dec. 15, 2021
Hamilton Sundstrand Corporation, Charlotte, NC (US);
Grzegorz Popek, Birmingham, GB;
Stephen Minshull, Bromsgrove, GB;
HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US);
Abstract
A motor drive system includes an input portion arranged to receive a DC input voltage across first and second conductors. An inverter is connected across the first and second conductors, and is arranged such that, in a normal mode, the inverter receives the DC input voltage and generates an AC drive voltage. A motor is connected to the inverter and is arranged such that, in the normal mode of operation, the motor receives the AC drive voltage. A first normally-open switch is connected along the first conductor between the input portion and the inverter. A damping controller comprising a second normally-closed switch and a damping means is connected in series between the first and second conductors. When the operated in the normal mode, the first switch is closed and the second switch is open. In a damping mode, the first switch is open and the second switch is closed.