F03D 7/0276
Controlling rotor speed
Official title: {controlling rotor speed, e.g. variable speed}
F03D7/0276 (Controlling rotor speed) appears on 367 US grants and 423 published applications in this corpus.
Search patents in F03D- Granted patents
- 367
- Published applications
- 423
- Assignees
- 123
- Inventors
- 721
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 4 |
| 2004 | 2 | 4 |
| 2005 | 6 | 2 |
| 2006 | 2 | 2 |
| 2007 | 2 | 8 |
| 2008 | 3 | 8 |
| 2009 | 6 | 17 |
| 2010 | 11 | 16 |
| 2011 | 12 | 21 |
| 2012 | 18 | 20 |
| 2013 | 5 | 21 |
| 2014 | 20 | 20 |
| 2015 | 15 | 19 |
| 2016 | 12 | 15 |
| 2017 | 20 | 21 |
| 2018 | 15 | 29 |
| 2019 | 28 | 26 |
| 2020 | 22 | 33 |
| 2021 | 24 | 32 |
| 2022 | 31 | 31 |
| 2023 | 23 | 31 |
| 2024 | 39 | 25 |
| 2025 | 27 | 10 |
| 2026 | 12 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control device and method of controlling a wind turbine22 Sep 2026US 12,742,438 B2Siemens Gamesa Renewable Energy A/S
- Method and controller arrangement for operating a wind turbine farm15 Sep 2026US 12,736,028 B2Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
- Method for controlling a wind power installation21 Jul 2026US 12,687,152 B2Wobben Properties GmbH
- Method and system for controlling wind turbine rotor oscillations21 Jul 2026US 12,687,153 B2GE Vernova Infrastructure Technology LLC
- Damping assembly for wind turbines12 May 2026US 12,624,678 B2Windsun Pte Ltd
- Controlling a wind turbine during low voltage events24 Sep 2026US 2026/0286936 A1Siemens Gamesa Renewable Energy Innovation & Technology S.L.
- Method for operating a wind turbine, control system for operating a wind turbine and wind turbine23 Jul 2026US 2026/0210329 A1Nordex Energy GmbH
- Wind Turbine and Method for Controlling the Same11 Jun 2026US 2026/0160229 A1Nordex Energy GmbH
- Method for operating a wind turbine and wind turbine14 May 2026US 2026/0132769 A1Nordex Energy GmbH
- Internet of Things-based method and device for controlling power generation of wind power generator set19 Feb 2026US 2026/0049596 A1Zhongshan Power Supply Bureau of Guangdong Power Grid Co Ltd.
Most cited
By later US patents
- Variable speed wind turbine with reduced power fluctuation and a static VAR mode of operation266US 5,225,712 AU.S. Windpower, Inc. · 1993
- Variable speed wind turbine245US 5,083,039 AU.S. Windpower, Inc. · 1992
- Variable speed distributed drive train wind turbine system147US 7,042,110 B2Clipper Windpower Technology, Inc. · 2006
- Variable speed wind turbine generator140US 6,137,187 AZond Energy Systems, Inc. · 2000
- Speed control system for a variable speed wind turbine126US 5,289,041 AU.S. Windpower, Inc. · 1994