Invention Grant
- Patent Title: Online and offline partial discharge detection for electrical drive systems
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Application No.: US17412343Application Date: 2021-08-26
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Publication No.: US11846665B2Publication Date: 2023-12-19
- Inventor: Lili Zhang , Karim Younsi , Christopher Michael Calebrese , John Russell Yagielski , Han Xiong
- Applicant: General Electric Company
- Applicant Address: US NY Schenectady
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Schenectady
- Agency: Dority & Manning, P.A.
- Main IPC: G01R31/00
- IPC: G01R31/00 ; G01R31/12 ; G01R31/34

Abstract:
Aspects of the present disclosure are directed to systems and methods for detecting Partial Discharge (PD) associated with wide bandgap semiconductor-based electrical drive systems in real time. In one aspect, signals, including noise associated with drive switching and other background noises are detected using a sensing device. The signals are received by a real-time spectrum analyzer. The spectrum analyzer transforms the signals into the frequency domain and determines or registers the frequency domain profiles of the signals. The spectrum analyzer performs signal discrimination between at least one other signal included within the signals and switching noise based on their frequency domain profiles. Based on the discrimination analysis, the presence of a partial discharge signal may be detected. A physics-based signal discrimination approach can also be used for signal discrimination, for example utilizing pressure-dependency of characteristics of a PD signal.
Public/Granted literature
- US20220065915A1 ONLINE AND OFFLINE PARTIAL DISCHARGE DETECTION FOR ELECTRICAL DRIVE SYSTEMS Public/Granted day:2022-03-03
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