H02J 3/42
With automatic parallel connection when synchronisation is achieved
Official title: with automatic parallel connection when synchronisation is achieved
H02J3/42 (With automatic parallel connection when synchronisation is achieved) appears on 145 US grants and 147 published applications in this corpus.
Search patents in H02J- Granted patents
- 145
- Published applications
- 147
- Assignees
- 106
- Inventors
- 349
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 4 |
| 2005 | 3 | 5 |
| 2006 | 3 | 1 |
| 2007 | 3 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 6 |
| 2010 | 2 | 3 |
| 2011 | 3 | 8 |
| 2012 | 4 | 8 |
| 2013 | 8 | 1 |
| 2014 | 2 | 5 |
| 2015 | 3 | 12 |
| 2016 | 2 | 1 |
| 2017 | 8 | 12 |
| 2018 | 7 | 7 |
| 2019 | 6 | 6 |
| 2020 | 8 | 11 |
| 2021 | 8 | 11 |
| 2022 | 14 | 11 |
| 2023 | 7 | 8 |
| 2024 | 10 | 9 |
| 2025 | 9 | 10 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Scalable rules-based object-oriented power system control scheme19 May 2026US 12,633,746 B2Cummins Power Generation Inc.
- Method and device for operating a generator set, internal combustion engine, and generator set including the internal combustion engine and a generator21 Apr 2026US 12,607,152 B2Rolls-Royce Solutions GmbH
- Phasor measurement units, synchrophasor systems and methods thereof26 Aug 2025US 12,399,520 B2Ei Electronics LLC
- Systems and methods for photovoltaic production curtailment and autonomous load breaking15 Jul 2025US 12,362,572 B2Unirac, Inc.
- Power convertor10 Jun 2025US 12,328,006 B2Mitsubishi Electric Corporation
- Scalable rules-based object-oriented power system control scheme27 Aug 2026US 2026/0254245 A1Cummins Power Generation Inc.
- Reconnection control apparatus and power system6 Aug 2026US 2026/0229896 A1Mitsubishi Electric Corporation
- Systems and methods for photovoltaic production curtailment and autonomous load breaking5 Mar 2026US 2026/0066665 A1Unirac, Inc.
- Power converter, power supply system, and black start method for power converter5 Feb 2026US 2026/0039191 A1Huawei Digital Power Technologies Co., Ltd.
- Power system and method for starting power system18 Dec 2025US 2025/0385517 A1Huawei Digital Power Technologies Co., Ltd.
Most cited
By later US patents
- System and method employing a digital computer with improved programmed operation for automatically synchronizing a gas turbine or other electric power plant generator with a power system213US 4,031,407 AWestinghouse Electric Corp. · 1977
- Method and apparatus for power inverter synchronization191US 7,183,667 B2Square D Company · 2007
- Apparatuses and methods to connect power sources to an electric power system163US 7,898,112 B2Tigo Energy, Inc. · 2011
- Universal distributed-resource interface132US 6,134,124 AABB Power T&D Company Inc. · 2000
- Parallel connection of different types of AC power supplies of differing capacities86US 5,473,528 AKabushiki Kaisha Toshiba · 1995