H02P 23/00
Arrangements or methods for the control of ac motors characterised by a
Official title: Arrangements or methods for the control of AC motors characterised by a control method other than vector control
H02P23/00 (Arrangements or methods for the control of ac motors characterised by a) appears on 3,551 US grants and 3,224 published applications in this corpus.
Search patents in H02P- Granted patents
- 3,551
- Published applications
- 3,224
- Assignees
- 1,410
- Inventors
- 7,182
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 31 | 0 |
| 1977 | 32 | 0 |
| 1978 | 36 | 0 |
| 1979 | 27 | 0 |
| 1980 | 30 | 0 |
| 1981 | 44 | 0 |
| 1982 | 45 | 0 |
| 1983 | 44 | 0 |
| 1984 | 70 | 0 |
| 1985 | 39 | 0 |
| 1986 | 44 | 0 |
| 1987 | 43 | 0 |
| 1988 | 30 | 0 |
| 1989 | 43 | 0 |
| 1990 | 45 | 0 |
| 1991 | 38 | 0 |
| 1992 | 23 | 0 |
| 1993 | 35 | 0 |
| 1994 | 24 | 0 |
| 1995 | 33 | 0 |
| 1996 | 28 | 0 |
| 1997 | 33 | 0 |
| 1998 | 53 | 0 |
| 1999 | 30 | 0 |
| 2000 | 21 | 0 |
| 2001 | 14 | 7 |
| 2002 | 18 | 17 |
| 2003 | 24 | 29 |
| 2004 | 34 | 38 |
| 2005 | 25 | 54 |
| 2006 | 50 | 45 |
| 2007 | 32 | 64 |
| 2008 | 38 | 77 |
| 2009 | 39 | 74 |
| 2010 | 52 | 65 |
| 2011 | 62 | 72 |
| 2012 | 67 | 104 |
| 2013 | 84 | 123 |
| 2014 | 117 | 166 |
| 2015 | 124 | 154 |
| 2016 | 128 | 119 |
| 2017 | 147 | 163 |
| 2018 | 153 | 158 |
| 2019 | 165 | 200 |
| 2020 | 168 | 211 |
| 2021 | 162 | 210 |
| 2022 | 210 | 226 |
| 2023 | 195 | 225 |
| 2024 | 223 | 237 |
| 2025 | 184 | 198 |
| 2026 | 115 | 188 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H02P 23/14Estimation or adaptation of motor parameters970
- H02P 23/0004Control strategies in general501
- H02P 23/0077Arrangements or methods for the control of ac motors characterised by a319
- H02P 23/26Power factor control [pfc]253
- H02P 23/18Controlling the angular speed together with angular position or phase238
- H02P 23/16Controlling the angular speed of one shaft233
- H02P 23/20Controlling the acceleration or deceleration210
- H02P 23/04Arrangements or methods for the control of ac motors characterised by a203
All 19 subgroupsShow fewer
- H02P 23/24Controlling the direction152
- H02P 23/06Controlling the motor in four quadrants151
- H02P 23/22Controlling the speed digitally using a reference oscillator, a speed proportional pulse150
- H02P 23/08Controlling based on slip frequency140
- H02P 23/12Observer control127
- H02P 23/0086Arrangements or methods for the control of ac motors characterised by a85
- H02P 23/03Arrangements or methods for the control of ac motors characterised by a73
- H02P 23/28Controlling the motor by varying the switching frequency of switches connected to65
- H02P 23/30Direct torque control [dtc] or field acceleration method [fam]65
- H02P 23/02Arrangements or methods for the control of ac motors characterised by a45
- H02P 23/10Controlling by adding a dc current17
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