H02P 21/14
Estimation or adaptation of machine parameters
Official title: Estimation or adaptation of machine parameters, e.g. flux, current or voltage
H02P21/14 (Estimation or adaptation of machine parameters) appears on 1,788 US grants and 2,041 published applications in this corpus.
Search patents in H02P- Granted patents
- 1,788
- Published applications
- 2,041
- Assignees
- 641
- Inventors
- 3,476
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 10 | 0 |
| 1997 | 8 | 0 |
| 1998 | 9 | 0 |
| 1999 | 12 | 0 |
| 2000 | 8 | 0 |
| 2001 | 11 | 4 |
| 2002 | 16 | 10 |
| 2003 | 18 | 22 |
| 2004 | 25 | 24 |
| 2005 | 11 | 20 |
| 2006 | 27 | 14 |
| 2007 | 19 | 34 |
| 2008 | 15 | 41 |
| 2009 | 22 | 38 |
| 2010 | 28 | 37 |
| 2011 | 29 | 37 |
| 2012 | 49 | 57 |
| 2013 | 44 | 69 |
| 2014 | 52 | 86 |
| 2015 | 87 | 102 |
| 2016 | 89 | 90 |
| 2017 | 85 | 86 |
| 2018 | 94 | 101 |
| 2019 | 114 | 141 |
| 2020 | 114 | 152 |
| 2021 | 121 | 136 |
| 2022 | 145 | 129 |
| 2023 | 136 | 158 |
| 2024 | 118 | 163 |
| 2025 | 152 | 164 |
| 2026 | 78 | 126 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Adaptive nut removal mode in a power tool6 Oct 2026US 12,752,406 B2Milwaukee Electric Tool Corporation
- Motor control device and electric vehicle6 Oct 2026US 12,756,340 B2Hitachi Astemo, Ltd.
- Synchronous machine control device, synchronous machine control method, and electric vehicle6 Oct 2026US 12,756,341 B2Hitachi Astemo, Ltd.
- Method for controlling a three-phase electric machine and control unit and system thereof29 Sep 2026US 12,749,994 B2Politecnico Di Torino
- Control device, control method, and control system29 Sep 2026US 12,749,995 B2Kabushiki Kaisha Toshiba
- Data-Driven Predictive Current Modeling Method, Apparatus, Medium, and Device for a Permanent Magnet Synchronous Motor8 Oct 2026US 2026/0312517 A1Southwest Jiaotong University
- Method of identifying the parameters of a permanent magnet synchronous motor8 Oct 2026US 2026/0312518 A1Arol S.P.A.
- Rotary electric machine control device, electric power steering device, and vehicle8 Oct 2026US 2026/0312519 A1Mitsubishi Electric Mobility Corporation
- Control factor based matrix converter control in a motor drive unit8 Oct 2026US 2026/0312525 A1Vidar Corporation
- Emotor current sampling arrangement1 Oct 2026US 2026/0302980 A1Silicon Mobility SAS
Most cited
By later US patents
- Control device for electric motor412US 7,005,828 B2Nissan Motor Co., Ltd. · 2006
- Method of estimating a rotor position of synchronous motor, method of controlling synchronous motor with no position sensor and a controller of synchronous motor142US 6,396,229 B1Hitachi, Ltd. · 2002
- Method and apparatus for transducerless position and velocity estimation in drives for AC machines138US 5,585,709 AWisconsin Alumni Research Foundation · 1996
- Motor torque control method and apparatus130US 5,334,923 AWisconsin Alumni Research Foundation · 1994
- Method and apparatus for transducerless position and velocity estimation in drives for AC machines124US 5,565,752 AWisconsin Alumni Research Foundation · 1996