H02M 5/272
For variable speed constant frequency systems
Official title: {for variable speed constant frequency systems}
H02M5/272 (For variable speed constant frequency systems) appears on 26 US grants and 13 published applications in this corpus.
Search patents in H02M- Granted patents
- 26
- Published applications
- 13
- Assignees
- 18
- Inventors
- 49
- Latest grant
- 28 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 5 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 1 |
| 2008 | 3 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Multi-port subsea high-voltage power modulation and stored energy distribution system28 Jan 2025US 12,212,144 B2Raytheon Company
- Thyristor starter15 Mar 2022US 11,277,087 B2Toshiba Mitsubishi-Electric Industrial Systems Corporation
- Operating circuit for coupling a synchronous machine with a voltage network and method for operating it14 Dec 2021US 11,201,558 B2GE Energy Power Conversion Technology Limited
- Electric power converter and control method for electric power converter18 Jul 2017US 9,712,079 B2Kabushiki Kaisha Yaskawa Denki
- Method for operating a converter in a system for generating electrical energy13 Oct 2015US 9,160,245 B2GE Energy Power Conversion Technology Limited
- Multi-port subsea high-voltage power modulation and stored energy distribution system24 Oct 2024US 2024/0356336 A1Raytheon Company
- Thyristor starter15 Jul 2021US 2021/0218358 A1Toshiba Mitsubishi-Electric Industrial Systems Corporation
- Operating circuit for coupling a synchronous machine with a voltage network and method for operating it22 Aug 2019US 2019/0260299 A1GE Energy Power Conversion Technology Limited
- Electric power converter and control method for electric power converter12 Mar 2015US 2015/0070952 A1Kabushiki Kaisha Yaskawa Denki
- Method For Operating A Converter In A System For Generating Electrical Energy19 Jul 2012US 2012/0182774 A1Converteam Ltd
Most cited
By later US patents
- Distributed system and methodology of electrical power regulation, conditioning and distribution on an aircraft62US 6,778,414 B2The Boeing Company · 2004
- PWM inverter circuit analytically compensating for DC link distortion54US 4,937,720 ASundstrand Corporation · 1990
- Power converter for an electrically-compensated constant speed drive38US 4,695,776 ASunstrand Corporation · 1987
- Paralleling method and control for a VSCF system27US 4,905,134 ASundstrand Corporation · 1990
- Low distortion control for a VSCF generating system19US 4,956,598 ASundstrand Corporation · 1990