H02P 21/26
Rotor flux based control
H02P21/26 (Rotor flux based control) appears on 193 US grants and 193 published applications in this corpus.
Search patents in H02P- Granted patents
- 193
- Published applications
- 193
- Assignees
- 104
- Inventors
- 412
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 2 |
| 2002 | 3 | 2 |
| 2003 | 5 | 3 |
| 2004 | 4 | 9 |
| 2005 | 6 | 4 |
| 2006 | 5 | 3 |
| 2007 | 3 | 8 |
| 2008 | 6 | 5 |
| 2009 | 1 | 4 |
| 2010 | 6 | 3 |
| 2011 | 5 | 8 |
| 2012 | 4 | 7 |
| 2013 | 7 | 10 |
| 2014 | 7 | 8 |
| 2015 | 12 | 7 |
| 2016 | 6 | 2 |
| 2017 | 7 | 9 |
| 2018 | 9 | 16 |
| 2019 | 12 | 13 |
| 2020 | 12 | 16 |
| 2021 | 11 | 18 |
| 2022 | 17 | 8 |
| 2023 | 7 | 8 |
| 2024 | 6 | 9 |
| 2025 | 10 | 3 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Flux weakening for a single phase linear compressor16 Jun 2026US 12,656,038 B1Haier US Appliance Solutions, Inc.
- Method and device for controlling three-phase motor5 May 2026US 12,620,918 B2Mitsubishi Electric Corporation
- Saliency tracking for brushless Dc motors and other permanent magnet synchronous motors10 Mar 2026US 12,573,973 B2
- Control method for vector flux weakening for vehicle permanent magnet synchronous motor20 Jan 2026US 12,531,499 B2Zhejiang University City College
- Motor driving apparatus and control method therefor30 Dec 2025US 12,512,775 B2Hyundai Motor Company
- Motor control device and motor control method8 Oct 2026US 2026/0312521 A1Minebea Power Semiconductor Device Inc.
- Drive device for an electric vehicle, electric vehicle and method for operating a drive device in an electric vehicle23 Jul 2026US 2026/0208598 A1Valeo eAutomotive Germany GmbH
- Drive control device, drive control system, and state estimation method2 Jul 2026US 2026/0189165 A1MINEBEA MITSUMI Inc.
- Power generation device for direct current propulsion ship, and control method therefor25 Jun 2026US 2026/0180480 A1Hd Korea Shipbuilding & Offshore Engineering C., Ltd.
- Saliency tracking for brushless dc motors and other permanent magnet synchronous motors18 Jun 2026US 2026/0171943 A1
Most cited
By later US patents
- Method and apparatus for transducerless position and velocity estimation in drives for AC machines138US 5,585,709 AWisconsin Alumni Research Foundation · 1996
- Method and apparatus for transducerless position and velocity estimation in drives for AC machines124US 5,565,752 AWisconsin Alumni Research Foundation · 1996
- System for speed-sensorless control of an induction machine76US 6,137,258 AGeneral Electric Company · 2000
- Sensorless rotor tracking of induction machines with asymmetrical rotor resistance74US 6,069,467 AGeneral Electric Company · 2000
- Method and apparatus for transducerless flux estimation in drives for induction machines57US 5,559,419 AWisconsin Alumni Research Foundation · 1996