Y02E 40/40
Arrangements for reducing harmonics
Y02E40/40 (Arrangements for reducing harmonics) appears on 416 US grants and 365 published applications in this corpus.
Search patents in Y02E- Granted patents
- 416
- Published applications
- 365
- Assignees
- 276
- Inventors
- 1,021
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 20 | 0 |
| 1995 | 12 | 0 |
| 1996 | 13 | 0 |
| 1997 | 10 | 0 |
| 1998 | 14 | 0 |
| 1999 | 9 | 0 |
| 2000 | 6 | 0 |
| 2001 | 2 | 0 |
| 2002 | 10 | 9 |
| 2003 | 7 | 6 |
| 2004 | 2 | 7 |
| 2005 | 11 | 11 |
| 2006 | 7 | 5 |
| 2007 | 4 | 10 |
| 2008 | 7 | 11 |
| 2009 | 7 | 6 |
| 2010 | 3 | 8 |
| 2011 | 6 | 11 |
| 2012 | 6 | 22 |
| 2013 | 9 | 16 |
| 2014 | 13 | 11 |
| 2015 | 9 | 23 |
| 2016 | 16 | 33 |
| 2017 | 21 | 21 |
| 2018 | 28 | 21 |
| 2019 | 25 | 21 |
| 2020 | 24 | 22 |
| 2021 | 21 | 22 |
| 2022 | 20 | 17 |
| 2023 | 10 | 24 |
| 2024 | 22 | 19 |
| 2025 | 16 | 4 |
| 2026 | 7 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Utilization of distributed generator inverters as statcom22 Sep 2026US 12,744,380 B2
- 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 control system, device, and information processing system19 May 2026US 12,633,965 B2Daikin Industries, Ltd.
- Filter system and X-capacitor protection method thereof21 Apr 2026US 12,609,632 B2Delta Electronics (Shanghai) Co., Ltd.
- Harmonic reduce system and uninterruptible power supply including same10 Feb 2026US 12,549,008 B2Santak Electronic (Shenzhen) Co., Ltd.
- Power Converter Device With An Integrated Control Scheme27 Aug 2026US 2026/0254246 A1Aros Electronics AB
- Resonance suppression method and system for grid-forming converter system based on sequence impedance remodeling27 Aug 2026US 2026/0254368 A1Shandong University
- Filter system and x-capacitor protection method thereof16 Jul 2026US 2026/0205028 A1Delta Electronics (Shanghai) Co., Ltd.
- Device for the return of homopolar residual currents flowing through the neutral of an electrical distribution system11 Jun 2026US 2026/0163375 A1
- Utilization of distributed generator inverters as statcom29 Jan 2026US 2026/0031623 A1
Most cited
By later US patents
- System and method for reducing harmonic currents by current injection335US 5,345,375 ARegents of the University of Minnesota · 1994
- Systems and methods for preventing islanding of grid-connected electrical power systems250US 6,429,546 B1Georgia Tech Research Corporation · 2002
- System for reducing harmonics by harmonic current injection194US 5,499,178 ARegents of the University of Minnesota · 1996
- Programmable timed electrical power management device96US 5,278,771 ASETi Co., Ltd. · 1994
- Active power conditioner for reactive and harmonic compensation having PWM and stepped-wave inverters81US 5,751,138 AUniversity of Washington · 1998