H02P 23/009
Using field weakening
Official title: {using field weakening}
H02P23/009 (Using field weakening) appears on 59 US grants and 66 published applications in this corpus.
Search patents in H02P- Granted patents
- 59
- Published applications
- 66
- Assignees
- 42
- Inventors
- 177
- Latest grant
- 15 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 4 |
| 2012 | 2 | 3 |
| 2013 | 3 | 3 |
| 2014 | 5 | 6 |
| 2015 | 1 | 4 |
| 2016 | 2 | 5 |
| 2017 | 7 | 4 |
| 2018 | 8 | 6 |
| 2019 | 5 | 5 |
| 2020 | 3 | 7 |
| 2021 | 3 | 7 |
| 2022 | 7 | 4 |
| 2023 | 6 | 2 |
| 2024 | 4 | 1 |
| 2025 | 1 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for control of multi-phase machines15 Jul 2025US 12,362,688 B2Cummins Inc.
- Induction motor and controller device therefor12 Nov 2024US 12,143,052 B2
- Motor driving apparatus and method for controlling the same15 Oct 2024US 12,119,768 B2Hyundai Motor Company
- Vehicle control apparatus1 Oct 2024US 12,107,524 B2Subaru Corporation
- Stator-based permanent magnet field-enhanced hybrid-excitation motor capable of operating under multiple working conditions and drive control method thereof20 Feb 2024US 11,909,281 B2Jiangsu University
- Electric machine, method for producing a mechanical magnetic-field-attenuating mechanism, mechanical magnetic-field-attenuating mechanism, and kit of parts6 Aug 2026US 2026/0229975 A1Schaeffler Technologies AG & Co. KG
- Circular saw30 Oct 2025US 2025/0332755 A1
- Power tool including dynamically configurable motor parameters27 Mar 2025US 2025/0105771 A1Milwaukee Electric Tool Corporation
- Stator-based permanent magnet field-enhanced hybrid-excitation motor capable of operating under multiple working conditions and drive control method thereof4 Jan 2024US 2024/0006971 A1Jiangsu University
- Systems and methods for control of multi-phase machines21 Dec 2023US 2023/0412097 A1Cummins Inc.
Most cited
By later US patents
- Pulse modulated control with field weakening for improved motor efficiency23US 11,167,648 B1Tula eTechnology, Inc. · 2021
- Brushless motor with rotor position detection compensation caused by induced voltage in rotor19US 5,982,133 AMatsushita Electric Industrial Co., Ltd. · 1999
- Pulse modulated control with field weakening for improved motor efficiency15US 11,623,529 B2Tula eTechnology, Inc. · 2023
- Motor drive device, and compressor and refrigerator using same11US 8,716,964 B2Panasonic Corporation · 2014
- Methods, systems and apparatus for computing a voltage advance used in controlling operation of an electric machine10US 8,583,265 B1GM Global Technology Operations LLC · 2013