H02P 27/02
Arrangements or methods for the control of ac motors characterised by the
Official title: using supply voltage with constant frequency and variable amplitude
H02P27/02 (Arrangements or methods for the control of ac motors characterised by the) appears on 158 US grants and 76 published applications in this corpus.
Search patents in H02P- Granted patents
- 158
- Published applications
- 76
- Assignees
- 102
- Inventors
- 268
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 3 |
| 2003 | 4 | 3 |
| 2004 | 1 | 2 |
| 2005 | 1 | 2 |
| 2006 | 3 | 2 |
| 2007 | 1 | 3 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 7 |
| 2011 | 1 | 3 |
| 2012 | 4 | 6 |
| 2013 | 3 | 3 |
| 2014 | 3 | 3 |
| 2015 | 3 | 8 |
| 2016 | 5 | 5 |
| 2017 | 6 | 1 |
| 2018 | 0 | 4 |
| 2019 | 5 | 6 |
| 2020 | 7 | 5 |
| 2021 | 6 | 1 |
| 2022 | 0 | 3 |
| 2023 | 2 | 3 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Technique for dissipating heat in electric work machine6 Jan 2026US 12,519,376 B2Makita Corporation
- Method for starting and stopping an asynchronous motor3 Sep 2024US 12,081,146 B2Siemens Aktiengesellschaft
- Clothes treating apparatus and the control method for the same21 Nov 2023US 11,821,131 B2LG Electronics Inc.
- Fan control circuit with temperature compensation and method of controlling fan22 Aug 2023US 11,736,052 B2Enermax Technology Corporation
- Drive with integrated dynamic load control14 Dec 2021US 11,201,577 B2Bauer Gear Motor GmbH
- Method and device for synchronous motor control28 Dec 2023US 2023/0421080 A1Sami Shamoon College of Engineering (R.A)
- Method for starting and stopping an asynchronous motor8 Jun 2023US 2023/0179125 A1Siemens Aktiengesellschaft
- Technique for dissipating heat in electric work machine12 Jan 2023US 2023/0011554 A1Makita Corporation
- A motor drive signal generator3 Nov 2022US 2022/0352839 A1Animal Dynamics Limited
- Clothes treating apparatus and the control method for the same23 Jun 2022US 2022/0195656 A1LG Electronics Inc.
Most cited
By later US patents
- Motor driver having a booster circuit and an inverter both controlled by pulse width modulation74US 6,060,859 AKabushiki Kaisha Toshiba · 2000
- Compound short-circuit induction machine and method of its control63US 4,761,602 A1988
- Electric motor control apparatus and method60US 5,187,419 AAllen-Bradley Company, Inc. · 1993
- Controller for a door operator50US 6,184,641 B2The Chamberlain Group, Inc. · 2001
- Controller for starting and stopping electric motors49US 5,008,608 AAllen-Bradley Company, Inc. · 1991