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:
Feb. 23, 2024
Hamilton Sundstrand Corporation, Charlotte, NC (US);
Ali Al-Karaghouli, Shirley, GB;
Grzegorz Popek, Birmingham, GB;
HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US);
Abstract
A method for monitoring insulation in a power system comprising a motor drive circuit configured to provide AC power from a power source to power a motor. The method includes: boosting a DC link voltage of an inverter of the motor drive by an active rectifier, the active rectifier converting the AC power from the power source to DC power for the inverter; isolating the motor drive circuit from the power source; performing at least one isolation test by providing a current path through components of the motor drive and optionally a motor connected to the output of the inverter to be tested; monitoring the current during each isolation test to detect partial discharge or excessive leakage from the current path, thereby indicating that there exist one or more defect(s) in the insulation in the current path.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile