H02P 21/22
Current control
Official title: Current control, e.g. using a current control loop
H02P21/22 (Current control) appears on 1,442 US grants and 1,688 published applications in this corpus.
Search patents in H02P- Granted patents
- 1,442
- Published applications
- 1,688
- Assignees
- 505
- Inventors
- 2,910
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 1 |
| 2002 | 9 | 8 |
| 2003 | 7 | 12 |
| 2004 | 12 | 16 |
| 2005 | 16 | 17 |
| 2006 | 11 | 12 |
| 2007 | 16 | 20 |
| 2008 | 8 | 29 |
| 2009 | 20 | 19 |
| 2010 | 21 | 22 |
| 2011 | 12 | 21 |
| 2012 | 24 | 15 |
| 2013 | 20 | 43 |
| 2014 | 34 | 53 |
| 2015 | 46 | 55 |
| 2016 | 48 | 63 |
| 2017 | 60 | 66 |
| 2018 | 65 | 80 |
| 2019 | 86 | 160 |
| 2020 | 144 | 165 |
| 2021 | 134 | 136 |
| 2022 | 160 | 122 |
| 2023 | 119 | 150 |
| 2024 | 113 | 145 |
| 2025 | 141 | 150 |
| 2026 | 70 | 108 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Synchronous machine control device, synchronous machine control method, and electric vehicle6 Oct 2026US 12,756,341 B2Hitachi Astemo, Ltd.
- Controller of an electrical power supply circuit for electrical power supply of a superconducting motor, superconducting electrical power supply system of a motor, and aircraft comprising such a system6 Oct 2026US 12,756,342 B2Airbus SAS
- Control device, control method, and control system29 Sep 2026US 12,749,995 B2Kabushiki Kaisha Toshiba
- Motor control22 Sep 2026US 12,744,482 B2ZF Automotive UK Limited
- Semiconductor device and motor driving system15 Sep 2026US 12,738,816 B2Rohm Co., Ltd.
- Systems and methods for a permanent magnet synchronous motor8 Oct 2026US 2026/0312516 A1Schlumberger Technology Corporation
- Data-Driven Predictive Current Modeling Method, Apparatus, Medium, and Device for a Permanent Magnet Synchronous Motor8 Oct 2026US 2026/0312517 A1Southwest Jiaotong University
- Rotary electric machine control device, electric power steering device, and vehicle8 Oct 2026US 2026/0312519 A1Mitsubishi Electric Mobility Corporation
- Method and arrangement for energy-aware dead-time insertion8 Oct 2026US 2026/0312520 A1Silicon Mobility SAS
- Motor control device and motor control method8 Oct 2026US 2026/0312521 A1Minebea Power Semiconductor Device Inc.
Most cited
By later US patents
- Extended speed range operation of permanent magnet brushless machines using optimal phase angle control in the voltage mode operation58US 6,373,211 B1Delphi Technologies, Inc. · 2002
- Vector control system for induction motors56US 4,808,903 AHitachi, Ltd. · 1989
- Circuit for driving permanent-magnet synchronous motor using proportional controller53US 5,656,911 AFuji Electric Co., Ltd. · 1997
- Synchronous motor drive unit and a driving method thereof49US 7,294,988 B2Hitachi, Ltd. · 2007
- Variable speed wind turbine having an exciter machine and a power converter not connected to the grid49US 7,425,771 B2Ingeteam, S.A. · 2008