Y02E 40/30
Reactive power compensation
Y02E40/30 (Reactive power compensation) appears on 1,132 US grants and 1,122 published applications in this corpus.
Search patents in Y02E- Granted patents
- 1,132
- Published applications
- 1,122
- Assignees
- 495
- Inventors
- 2,276
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 8 | 0 |
| 1978 | 0 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 9 | 0 |
| 1983 | 8 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 8 | 0 |
| 1995 | 10 | 0 |
| 1996 | 11 | 0 |
| 1997 | 12 | 0 |
| 1998 | 8 | 0 |
| 1999 | 14 | 0 |
| 2000 | 9 | 0 |
| 2001 | 7 | 3 |
| 2002 | 15 | 9 |
| 2003 | 9 | 20 |
| 2004 | 15 | 9 |
| 2005 | 10 | 10 |
| 2006 | 10 | 9 |
| 2007 | 10 | 12 |
| 2008 | 5 | 24 |
| 2009 | 12 | 24 |
| 2010 | 27 | 50 |
| 2011 | 20 | 49 |
| 2012 | 28 | 63 |
| 2013 | 35 | 81 |
| 2014 | 50 | 63 |
| 2015 | 54 | 75 |
| 2016 | 64 | 84 |
| 2017 | 61 | 86 |
| 2018 | 102 | 70 |
| 2019 | 90 | 71 |
| 2020 | 86 | 83 |
| 2021 | 66 | 64 |
| 2022 | 57 | 59 |
| 2023 | 47 | 49 |
| 2024 | 49 | 29 |
| 2025 | 32 | 17 |
| 2026 | 19 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control method for uninterruptible power supply system, controller, and uninterruptible power supply system25 Aug 2026US 12,719,303 B2Huawei Digital Power Technologies Co., Ltd.
- Power conversion device and power conversion system25 Aug 2026US 12,719,387 B2Mitsubishi Electric Corporation
- Use of distributed generator (DG) inverters as STATCOMs for decreasing line losses18 Aug 2026US 12,710,780 B2
- Power grid configuration control method and apparatus for flexible direct current power transmission system, and medium18 Aug 2026US 12,712,365 B2Electric Power Research Institute. China Southern Power Grid
- Power control system, device, and information processing system19 May 2026US 12,633,965 B2Daikin Industries, Ltd.
- Method, apparatus and device for determing voltage support strength of renewable energy power system in real time, storage medium and computer program product27 Aug 2026US 2026/0254239 A1
- Power Converter Device With An Integrated Control Scheme27 Aug 2026US 2026/0254246 A1Aros Electronics AB
- Integrated switched capacitor bank18 Jun 2026US 2026/0171903 A1
- Flicker prevention device and flicker prevention control method30 Apr 2026US 2026/0121408 A1Mitsubishi Electric Corporation
- Power control system for power network30 Apr 2026US 2026/0121414 A1Hitachi Energy Ltd
Most cited
By later US patents
- Non-contact power distribution system323US 5,898,579 AAuckland Uniservices Limited · 1999
- Power conversion apparatus, power conversion system, and islanding operation detection method259US 6,801,442 B2Canon Kabushiki Kaisha · 2004
- Distributed energy power source control method, apparatus and system for providing loads with dynamic power distribution modes257US 10,147,148 B2Gree Electric Appliances, Inc. of Zhuhai · 2018
- Systems and methods for distributed series compensation of power lines using passive devices215US 7,835,128 B2Georgia Tech Research Corporation · 2010
- Power factor correction system170US 4,554,502 A1985