H02P 9/46
Control of asynchronous generator by variation of capacitor
H02P9/46 (Control of asynchronous generator by variation of capacitor) appears on 39 US grants and 19 published applications in this corpus.
Search patents in H02P- Granted patents
- 39
- Published applications
- 19
- Assignees
- 36
- Inventors
- 76
- Latest grant
- 20 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 3 |
| 2008 | 3 | 1 |
| 2009 | 2 | 2 |
| 2010 | 2 | 2 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 2 | 3 |
| 2014 | 2 | 0 |
| 2015 | 0 | 3 |
| 2016 | 1 | 0 |
| 2017 | 3 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
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- System for supplying electrical power to a load and corresponding power supply method24 Dec 2015US 2015/0372625 A1GE Energy Power Conversion Technology Limited
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Most cited
By later US patents
- Variable speed wind turbine generator with zero-sequence filter141US 5,798,632 AMidwest Research Institute · 1998
- Induction generator system with switched capacitor control52US 4,417,194 AThe Charles Stark Draper Laboratory, Inc. · 1983
- Wind energy conversion system48US 4,242,628 ARegents of the University of Minnesota · 1980
- Reactive power compensating system40US 4,677,364 AThe United States of America as represented by the United States Department of Energy · 1987
- Control system for doubly fed induction generator40US 7,411,309 B2Xantrex Technology Inc. · 2008