H02H 7/065
Against excitation faults
Official title: {against excitation faults}
H02H7/065 (Against excitation faults) appears on 84 US grants and 52 published applications in this corpus.
Search patents in H02H- Granted patents
- 84
- Published applications
- 52
- Assignees
- 57
- Inventors
- 190
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 2 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 1 | 3 |
| 2010 | 2 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 5 |
| 2013 | 1 | 6 |
| 2014 | 3 | 5 |
| 2015 | 10 | 5 |
| 2016 | 3 | 4 |
| 2017 | 2 | 3 |
| 2018 | 2 | 1 |
| 2019 | 1 | 2 |
| 2020 | 3 | 4 |
| 2021 | 1 | 1 |
| 2022 | 3 | 2 |
| 2023 | 3 | 2 |
| 2024 | 3 | 2 |
| 2025 | 2 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for breaker operation in power systems22 Sep 2026US 12,744,374 B2Doosan Bobcat North America, Inc.
- Exciter circuit for an externally excited synchronous machine, motor vehicle and method for de-excitation of an exciter winding3 Feb 2026US 12,542,510 B2Audi AG
- System and method for detecting broken-bar fault in squirrel-cage induction motors25 Nov 2025US 12,480,994 B2Mitsubishi Electric Research Laboratories, Inc.
- Systems and methods for redundant overvoltage protection functions18 Nov 2025US 12,476,562 B2Hamilton Sundstrand Corporation
- Flexible excitation system and control method therefor19 Nov 2024US 12,149,199 B2State Grid Zhejiang Electric Power Research Institute
- Systems and methods for redundant overvoltage protection functions6 Mar 2025US 2025/0080017 A1Hamilton Sundstrand Corporation
- Systems and methods for breaker operation in power systems17 Oct 2024US 2024/0348042 A1Doosan Bobcat North America, Inc.
- Exciter circuit for an externally excited synchronous machine, motor vehicle and method for de-excitation of an exciter winding29 Feb 2024US 2024/0072713 A1Audi AG
- System and Method for Detecting Broken-Bar Fault in Squirrel-Cage Induction Motors14 Sep 2023US 2023/0288481 A1Mitsubishi Electric Research Laboratories, Inc.
- Generator failure detection method11 May 2023US 2023/0142245 A1Hamilton Sundstrand Corporation
Most cited
By later US patents
- Apparatus and method for providing protection for a synchronous electrical generator in a power system71US 7,710,693 B2Schweitzer Engineering Laboratories, Inc. · 2010
- Apparatus protecting a synchronous machine from under excitation57US 5,264,778 AWestinghouse Electric Corp. · 1993
- Generator shorted diode protection system40US 4,486,801 ASundstrand Corporation · 1984
- Brushless exciter fault indicator system28US 4,164,705 AWestinghouse Electric Corp. · 1979
- Method and apparatus for modifying limit and protection software in a synchronous generator exciter to match the capability of the turbine-generator27US 6,204,642 B1General Electric Company · 2001