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:
Oct. 07, 2025
Filed:
May. 10, 2023
Hamilton Sundstrand Corporation, Charlotte, NC (US);
Naison E. Mastrocola, Goshen, CT (US);
Steven A. Avritch, Bantam, CT (US);
HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US);
Abstract
A motor drive system includes a three-phase motor and a virtual neutral bridge inverter circuit. The three-phase motor includes a first phase lead, a second phase lead, and a third phase lead. Each of the first phase neutral end, the second phase neutral end, and the third phase neutral end of the phase leads are separated from one another. The virtual neutral bridge inverter circuit includes a first neutral switch pair connected at a first neutral connection node, a second neutral switch pair connected at a second neutral connection node, and a third neutral switch pair connected at a third neutral connection node. The first phase neutral end is connected to the first neutral connection node, the second phase neutral end is connected to the second neutral connection node, and the third phase neutral end is connected to the third neutral connection node.