H02J 3/1821
Using shunt compensators
Official title: using shunt compensators
H02J3/1821 (Using shunt compensators) appears on 835 US grants and 733 published applications in this corpus.
Search patents in H02J- Granted patents
- 835
- Published applications
- 733
- Assignees
- 410
- Inventors
- 1,809
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 10 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 8 | 0 |
| 1986 | 7 | 0 |
| 1987 | 10 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 10 | 0 |
| 1993 | 6 | 0 |
| 1994 | 11 | 0 |
| 1995 | 9 | 0 |
| 1996 | 11 | 0 |
| 1997 | 15 | 0 |
| 1998 | 7 | 0 |
| 1999 | 15 | 0 |
| 2000 | 12 | 0 |
| 2001 | 5 | 4 |
| 2002 | 8 | 10 |
| 2003 | 8 | 9 |
| 2004 | 9 | 8 |
| 2005 | 13 | 13 |
| 2006 | 11 | 11 |
| 2007 | 9 | 10 |
| 2008 | 8 | 18 |
| 2009 | 8 | 22 |
| 2010 | 19 | 24 |
| 2011 | 17 | 31 |
| 2012 | 25 | 46 |
| 2013 | 27 | 51 |
| 2014 | 43 | 44 |
| 2015 | 26 | 39 |
| 2016 | 41 | 31 |
| 2017 | 31 | 45 |
| 2018 | 49 | 47 |
| 2019 | 46 | 37 |
| 2020 | 47 | 42 |
| 2021 | 47 | 42 |
| 2022 | 37 | 34 |
| 2023 | 31 | 36 |
| 2024 | 16 | 23 |
| 2025 | 31 | 32 |
| 2026 | 20 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for optimal power grid reactive resource switching6 Oct 2026US 12,756,196 B2AspenTech Corporation
- Methods for joint power flow calculation of master-slave systems based on grid-following impedance22 Sep 2026US 12,742,811 B1Zhejiang University of Science and Technology
- Utilization of distributed generator inverters as statcom22 Sep 2026US 12,744,380 B2
- Optimization of inverter and capacitor bank sizing for reactive power management25 Aug 2026US 12,719,285 B1Brightnight Power LLC
- Use of distributed generator (DG) inverters as STATCOMs for decreasing line losses18 Aug 2026US 12,710,780 B2
- Power supply tie transformer, and regulation and control method therefor8 Oct 2026US 2026/0312409 A1
- Flicker suppression device and flicker suppression control method1 Oct 2026US 2026/0302778 A1Mitsubishi Electric Corporation
- Grid Forming Over Distribution Grid with Renewable Sources and Loads1 Oct 2026US 2026/0302792 A1Smart Wires Inc.
- Virtual synchronous control method and apparatus, device, and storage medium for energy storage system24 Sep 2026US 2026/0291240 A1Contemporary Amperex Future Energy Institute (Shanghai) Limited
- Method and system for dynamic adjustment of power synchronisation17 Sep 2026US 2026/0280294 A1GE Vernova Infrastructure Technology LLC
Most cited
By later US patents
- Apparatus and method for dynamic voltage restoration of utility distribution networks274US 5,329,222 AWestinghouse Electric Corp. · 1994
- Variable speed wind turbine with reduced power fluctuation and a static VAR mode of operation266US 5,225,712 AU.S. Windpower, Inc. · 1993
- Power conversion apparatus, power conversion system, and islanding operation detection method259US 6,801,442 B2Canon Kabushiki Kaisha · 2004
- Variable speed wind turbine245US 5,083,039 AU.S. Windpower, Inc. · 1992
- System for reducing harmonics by harmonic current injection194US 5,499,178 ARegents of the University of Minnesota · 1996