H02J 3/00142
Oscillations concerning frequency
Official title: {Oscillations concerning frequency}
H02J3/00142 (Oscillations concerning frequency) appears on 346 US grants and 438 published applications in this corpus.
Search patents in H02J- Granted patents
- 346
- Published applications
- 438
- Assignees
- 242
- Inventors
- 1,169
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 3 | 0 |
| 2004 | 4 | 5 |
| 2005 | 0 | 2 |
| 2006 | 4 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 3 | 8 |
| 2012 | 4 | 10 |
| 2013 | 3 | 16 |
| 2014 | 5 | 21 |
| 2015 | 10 | 23 |
| 2016 | 18 | 18 |
| 2017 | 20 | 18 |
| 2018 | 16 | 14 |
| 2019 | 20 | 32 |
| 2020 | 19 | 27 |
| 2021 | 24 | 29 |
| 2022 | 24 | 37 |
| 2023 | 37 | 26 |
| 2024 | 39 | 39 |
| 2025 | 45 | 50 |
| 2026 | 25 | 55 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Distributed-power-source control system29 Sep 2026US 12,749,899 B2Mitsubishi Electric Corporation
- Energy storage system and operating method thereof22 Sep 2026US 12,744,387 B2Delta Electronics, Inc.
- System and method for operating an inverter-based resource in grid-forming mode (GFM) for enhanced stability22 Sep 2026US 12,744,392 B2GE Vernova Renovables Espana, S.L.
- Tertiary frequency modulation method for power system8 Sep 2026US 12,731,991 B2Huaneng Lancang River Hydropower Inc.
- Photovoltaic power generation equipment, controller of power converter used therein, and method of controlling power converter8 Oct 2026US 2026/0312411 A1Kawasaki Jukogyo Kabushiki Kaisha
- Methods of operating an energy storage system1 Oct 2026US 2026/0302783 A1Kraken Technologies Limited
- Controlling the damping of sidewards tower oscillations based on a power oscillation disturbance level17 Sep 2026US 2026/0280285 A1Vestas Wind Systems A/S
- Distributed power supply integrated management system, distributed power supply integrated management device, distributed power supply integrated management method, and computer-readable non-transitory storage medium17 Sep 2026US 2026/0280286 A1Mitsubishi Electric Corporation
- Computer-implemented method for managing distributed energy storage system17 Sep 2026US 2026/0280298 A1Elisa Oyj
Most cited
By later US patents
- Electrical power distribution control methods, electrical energy demand monitoring methods, and power management devices151US 7,149,605 B2Battelle Memorial Institute · 2006
- Power oscillation protection53US 6,476,521 B1ABB AB · 2002
- Grid regulation services for energy storage devices based on grid frequency46US 8,478,452 B2Battelle Memorial Institute · 2013
- Method and apparatus for selective cancellation of subsynchronous resonance30US 4,513,240 AWestinghouse Electric Corp. · 1985
- Method and means for damping subsynchronous oscillations and DC offset in an AC power system29US 4,434,376 AElectric Power Research Institute, Inc. · 1984