H02P 9/00
Arrangements for controlling electric generators for the purpose of obtaining a desired
Official title: Arrangements for controlling electric generators for the purpose of obtaining a desired output
H02P9/00 (Arrangements for controlling electric generators for the purpose of obtaining a desired) appears on 4,082 US grants and 3,850 published applications in this corpus.
Search patents in H02P- Granted patents
- 4,082
- Published applications
- 3,850
- Assignees
- 1,226
- Inventors
- 6,695
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 15 | 0 |
| 1978 | 11 | 0 |
| 1979 | 8 | 0 |
| 1980 | 17 | 0 |
| 1981 | 17 | 0 |
| 1982 | 12 | 0 |
| 1983 | 16 | 0 |
| 1984 | 20 | 0 |
| 1985 | 13 | 0 |
| 1986 | 19 | 0 |
| 1987 | 31 | 0 |
| 1988 | 28 | 0 |
| 1989 | 27 | 0 |
| 1990 | 17 | 0 |
| 1991 | 29 | 0 |
| 1992 | 23 | 0 |
| 1993 | 28 | 0 |
| 1994 | 18 | 0 |
| 1995 | 28 | 0 |
| 1996 | 53 | 0 |
| 1997 | 40 | 0 |
| 1998 | 60 | 0 |
| 1999 | 52 | 0 |
| 2000 | 64 | 0 |
| 2001 | 64 | 15 |
| 2002 | 65 | 95 |
| 2003 | 67 | 91 |
| 2004 | 110 | 97 |
| 2005 | 70 | 97 |
| 2006 | 102 | 101 |
| 2007 | 106 | 131 |
| 2008 | 92 | 143 |
| 2009 | 110 | 155 |
| 2010 | 106 | 176 |
| 2011 | 141 | 189 |
| 2012 | 142 | 206 |
| 2013 | 148 | 211 |
| 2014 | 197 | 197 |
| 2015 | 166 | 234 |
| 2016 | 186 | 180 |
| 2017 | 181 | 193 |
| 2018 | 198 | 218 |
| 2019 | 203 | 218 |
| 2020 | 232 | 195 |
| 2021 | 171 | 152 |
| 2022 | 144 | 135 |
| 2023 | 120 | 148 |
| 2024 | 129 | 131 |
| 2025 | 119 | 93 |
| 2026 | 54 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H02P 9/14Arrangements for controlling electric generators for the purpose of obtaining a desired1,066
- H02P 9/04Control effected upon non-electric prime mover and dependent upon electric output value823
- H02P 9/10Control effected upon generator excitation circuit to reduce harmful effects of overloads799
- H02P 9/48Arrangements for obtaining a constant output value at varying speed of the626
- H02P 9/02Details of the control444
- H02P 9/007Control circuits for doubly fed generators385
- H02P 9/08Control of generator circuit during starting or stopping of driving means327
- H02P 9/006Means for protecting the generator by using control298
All 15 subgroupsShow fewer
- H02P 9/42To obtain desired frequency without varying speed of the generator165
- H02P 9/008Wherein the generator is controlled by the requirements of the prime mover122
- H02P 9/06Control effected upon clutch or other mechanical power transmission means and dependent109
- H02P 9/40Arrangements for controlling electric generators for the purpose of obtaining a desired79
- H02P 9/009Circuit arrangements for detecting rotor position73
- H02P 9/46Control of asynchronous generator by variation of capacitor39
- H02P 9/44Control of frequency and voltage in predetermined relation30
Recent patents
- Synthetic generator synchronization6 Oct 2026US 12,756,339 B2Google Inc.
- Braking control assembly for an aircraft gas turbine engine and method of using same29 Sep 2026US 12,749,993 B2Pratt & Whitney Canada Corp.
- Automatic voltage regulator for a generator25 Aug 2026US 12,719,393 B2Discovery Energy, LLC
- Management of axle driven generator in a transport refrigeration system18 Aug 2026US 12,709,210 B2Carrier Corporation
- System and methods for stabilization of DC bus voltage in a hybrid-electric aircraft18 Aug 2026US 12,710,009 B2VerdeGo Aero, Inc.
- Artificial loads for power spin up8 Oct 2026US 2026/0312515 A1Blue Vigil LLC
- Dihydrogen tank system for an aircraft having a turbine1 Oct 2026US 2026/0302976 A1Airbus Operations GmbH
- Control device and phase error correction method1 Oct 2026US 2026/0302977 A1Honda Motor Co., Ltd.
- Generator set control based on load conndition1 Oct 2026US 2026/0302978 A1Cummins Power Generation Inc.
- Alternator modulation for control of exhaust heating element1 Oct 2026US 2026/0304562 A1PACCAR Inc
Most cited
By later US patents
- Electric machine having an integrally continuous stator winding and stator slot bridges1,193US 6,936,948 B2Pratt & Whitney Canada Corp. · 2005
- Architecture for electric machine1,149US 7,583,063 B2Pratt & Whitney Canada Corp. · 2009
- Power control system and method978US 7,635,922 B2C. E. Niehoff & Co. · 2009
- Performance optimization controller and control method for doubly-fed machines427US 5,798,631 AState of Oregon acting by and through the State Board of Higher Education on behalf of Oregon State University · 1998
- Modular data collection and analysis system379US 6,434,512 B1Reliance Electric Technologies, LLC · 2002