H02P 21/24
Vector control not involving the use of rotor position or rotor speed
Official title: Vector control not involving the use of rotor position or rotor speed sensors
H02P21/24 (Vector control not involving the use of rotor position or rotor speed) appears on 618 US grants and 648 published applications in this corpus.
Search patents in H02P- Granted patents
- 618
- Published applications
- 648
- Assignees
- 280
- Inventors
- 1,203
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 2 |
| 2002 | 8 | 7 |
| 2003 | 15 | 10 |
| 2004 | 8 | 14 |
| 2005 | 9 | 9 |
| 2006 | 13 | 9 |
| 2007 | 10 | 15 |
| 2008 | 11 | 11 |
| 2009 | 5 | 13 |
| 2010 | 12 | 20 |
| 2011 | 13 | 24 |
| 2012 | 20 | 15 |
| 2013 | 18 | 19 |
| 2014 | 19 | 45 |
| 2015 | 32 | 24 |
| 2016 | 34 | 34 |
| 2017 | 40 | 32 |
| 2018 | 37 | 51 |
| 2019 | 48 | 54 |
| 2020 | 42 | 50 |
| 2021 | 43 | 45 |
| 2022 | 49 | 32 |
| 2023 | 35 | 31 |
| 2024 | 17 | 29 |
| 2025 | 28 | 27 |
| 2026 | 13 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Bus current control method, device, system, and storage medium22 Sep 2026US 12,741,626 B2Geely Automobile Research Institute (Ningbo) Co., Ltd.
- State estimation for controlling a drive machine without sensors22 Sep 2026US 12,744,480 B2Bayerische Motoren Werke Aktiengesellschaft
- Method and system for controlling an electric machine4 Aug 2026US 12,700,817 B2Volkswagen Aktiengesellschaft
- Electric compressor7 Jul 2026US 12,674,463 B2Sanden Corporation
- Motor control device, electromechanical integrated unit, hybrid system, electric power steering system, and motor control method30 Jun 2026US 12,668,228 B2Hitachi Astemo, Ltd.
- Motor control device and motor control method8 Oct 2026US 2026/0312521 A1Minebea Power Semiconductor Device Inc.
- Forward and reverse rotation control circuit and method for sensorless motor, and motor controller1 Oct 2026US 2026/0302984 A1Crm Icbg (Wuxi) Co., Ltd.
- Establishment method for analysis model of motor and control method based on vector magnetic circuit coordinate transformation24 Sep 2026US 2026/0291416 A1North China Electric Power University (Baoding)
- Control of the stator current or the concatenated stator flux for operating a synchronous machine with permanent-magnet excitation, and method24 Sep 2026US 2026/0291420 A1MAGNA Powertrain AG & Co KG
- Electrical apparatuses and methods3 Sep 2026US 2026/0261222 A1Thermo King Corporation
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
- Method for setting parameters of electronically-commutated motor for use as permanent-split capacitor motor83US 9,270,221 B2Zhongshan Broad-Ocean Motor Co., Ltd. · 2016
- 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