F05B 2220/70646
Double fed induction generators
Official title: Double fed induction generators (DFIGs)
F05B2220/70646 (Double fed induction generators) appears on 24 US grants and 29 published applications in this corpus.
Search patents in F05B- Granted patents
- 24
- Published applications
- 29
- Assignees
- 19
- Inventors
- 69
- Latest grant
- 24 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 2 |
| 2013 | 0 | 1 |
| 2014 | 1 | 3 |
| 2015 | 1 | 0 |
| 2016 | 3 | 2 |
| 2017 | 3 | 0 |
| 2018 | 0 | 3 |
| 2019 | 1 | 6 |
| 2020 | 7 | 3 |
| 2021 | 2 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 2 |
| 2024 | 3 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Method of operating a wind turbine and control system24 Dec 2024US 12,173,692 B2Siemens Gamesa Renewable Energy Innovation & Technology S.L.
- Wind turbine electrical power generating system12 Nov 2024US 12,140,122 B2Siemens Gamesa Renewable Energy Innovation & Technology S.L.
- Power generation system and method2 Jul 2024US 12,025,107 B1
- Method for operating doubly-fed wind turbine generator as a virtual synchronous machine to provide grid-forming control thereof1 Nov 2022US 11,486,355 B2General Electric Company
- Wind-solar hybrid power plant9 Nov 2021US 11,171,597 B2ABB Schweiz AG
- Power Generation System and Method26 Mar 2026US 2026/0085664 A1
- Wind turbine electrical power generating system25 May 2023US 2023/0160365 A1Siemens Gamesa Renewable Energy Innovation & Technology S.L.
- Method of operating a wind turbine and control system11 May 2023US 2023/0141320 A1Siemens Gamesa Renewable Energy Innovation & Technology S.L.
- Method for operating doubly-fed wind turbine generator as a virtual synchronous machine to provide grid-forming control thereof30 Jun 2022US 2022/0205424 A1General Electric Company
- Hydropower plant for controlling grid frequency and method of operating same21 May 2020US 2020/0158076 A1Voith Patent GmbH
Most cited
By later US patents
- Doubly-controlled asynchronous generator18US 7,830,127 B2Wind to Power System, S.L. · 2010
- Control system and method for a wind turbine generator17US 9,587,626 B2Acciona Windpower, S. A. · 2017
- Wind energy installation with an extended rotation speed range6US 8,084,875 B2REpower Systems AG · 2011
- Systems and methods for increasing wind turbine power output6US 9,617,976 B2General Electric Company · 2017
- Doubly-fed induction generator wind turbine system having solid-state stator switch4US 9,018,783 B2General Electric Company · 2015