H02P 21/32
Determining the initial rotor position
Official title: Determining the initial rotor position (H02P21/34 takes precedence)
H02P21/32 (Determining the initial rotor position) appears on 92 US grants and 109 published applications in this corpus.
Search patents in H02P- Granted patents
- 92
- Published applications
- 109
- Assignees
- 80
- Inventors
- 272
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2004 | 0 | 4 |
| 2005 | 1 | 1 |
| 2006 | 7 | 3 |
| 2007 | 4 | 5 |
| 2008 | 2 | 2 |
| 2009 | 2 | 2 |
| 2010 | 1 | 6 |
| 2011 | 3 | 4 |
| 2012 | 5 | 2 |
| 2013 | 1 | 1 |
| 2014 | 5 | 12 |
| 2015 | 5 | 5 |
| 2016 | 8 | 5 |
| 2017 | 5 | 0 |
| 2018 | 2 | 6 |
| 2019 | 7 | 11 |
| 2020 | 6 | 10 |
| 2021 | 7 | 6 |
| 2022 | 6 | 4 |
| 2023 | 7 | 8 |
| 2024 | 4 | 4 |
| 2025 | 3 | 5 |
| 2026 | 1 | 3 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Method of aligning a stationary rotor of a synchronous motor at a configured rotor angle and a controller therefor26 May 2026US 12,640,631 B1Kinetic Technologies International Holdings LP
- Motor control device and motor control method18 Mar 2025US 12,255,560 B2Nuvoton Technology Corporation
- Parameter identification for induction machines28 Jan 2025US 12,212,256 B2Siemens Aktiengesellschaft
- Method and device for determining a position of a rotor of a three-phase motor7 Jan 2025US 12,191,784 B2Mitsubishi Electric Corporation
- Control device of permanent magnet type rotating electrical machine20 Aug 2024US 12,065,038 B2Mitsubishi Electric Corporation
- Forward and reverse rotation control circuit and method for sensorless motor, and motor controller1 Oct 2026US 2026/0302984 A1Crm Icbg (Wuxi) Co., Ltd.
- Control device27 Aug 2026US 2026/0254390 A1Kabushiki Kaisha Toyota Jidoshokki
- Check of the anisotropy of the inductance of an electric motor during end-of-line commissioning23 Jul 2026US 2026/0213685 A1Schaeffler Technologies AG & Co. KG
- Magnetic pole position determining system and method16 Oct 2025US 2025/0321125 A1Qingdao Hisense Hitachi Air-Conditioning Systems Co., Ltd.
- Method for determining an initial rotor position of a rotor, computer program product, control unit, electric machine, inspection and/or test method and test stand18 Sep 2025US 2025/0293624 A1Schaeffler Technologies AG & Co. KG
Most cited
By later US patents
- Position sensorless control algorithm for AC machine48US 6,894,454 B2General Motors Corporation · 2005
- Motor control device25US 8,159,161 B2Sanyo Electric Co., Ltd. · 2012
- PMSM initial position detection system and method24US 8,796,974 B2Texas Instruments Incorporated · 2014
- Enhanced floating reference frame controller for sensorless control of synchronous machines22US 7,193,383 B2Honeywell International Inc. · 2007
- Self tuning method and apparatus for permanent magnet sensorless control20US 7,339,344 B2International Rectifier Corporation · 2008