Direct-axis voltage based angular offset calibration in an electric motor
US-2024424911-A1 · Dec 26, 2024 · US
Direct field-oriented control; Rotor flux feed-back control
Direct field-oriented control; Rotor flux feed-back control · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P21/10 |
| Official title | Direct field-oriented control; Rotor flux feed-back control |
| Display label | Direct field-oriented control; Rotor flux feed-back control |
| Total patents | 143 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 7 |
| 2017 | 3 |
| 2018 | 9 |
| 2019 | 13 |
| 2020 | 14 |
| 2021 | 20 |
| 2022 | 19 |
| 2023 | 22 |
| 2024 | 12 |
| 2025 | 13 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Autonomous apparatus
US-2021384856-A1 · Dec 9, 2021 · US
Electrostatic discharge protection in a monolithic gate driver having multiple voltage domains
US-2021313801-A1 · Oct 7, 2021 · US
Catch spin method for permanent magnet synchronous motor with sensorless field oriented control
US-2021211079-A1 · Jul 8, 2021 · US
Power tool and control method thereof
US-2020412286-A1 · Dec 31, 2020 · US
Field-oriented sensorless brushless motor control in a power tool
US-2020389110-A1 · Dec 10, 2020 · US
Field-oriented sensorless brushless motor control in a power tool
US-2020389108-A1 · Dec 10, 2020 · US
Field-oriented sensorless brushless motor control in a power tool
US-2020389109-A1 · Dec 10, 2020 · US
Field-oriented control of a permanently excited synchronous reluctance machine
US-2020266744-A1 · Aug 20, 2020 · US
Method for changing between block control and pwm control of an electric machine
US-2020259436-A1 · Aug 13, 2020 · US
Magnetic generator for motor, soft magnetic core, and method of manufacturing magnet
US-2020244121-A1 · Jul 30, 2020 · US
Electrically driven vehicle
US-2020231046-A1 · Jul 23, 2020 · US
Rotary electric machine, rotary electric machine drive system, magnet, method of manufacturing magnet, magnetizing apparatus, and magnet unit
US-2020228038-A1 · Jul 16, 2020 · US
Methods and apparatus for three-phase motor control with error compensation
US-10651767-B2 · May 12, 2020 · US
Method for operating a three-phase machine
US-2020106376-A1 · Apr 2, 2020 · US
Determination of demagnetized torque capability in real-time for electric motor in propulsion system
US-10608567-B1 · Mar 31, 2020 · US
Control device for alternating current motor
US-10594240-B2 · Mar 17, 2020 · US
Integrated electrical pump and oil pressure control method thereof
US-10530286-B2 · Jan 7, 2020 · US
Control apparatus of a synchronous motor
US-2019341865-A1 · Nov 7, 2019 · US
Method of dissipating regenerative energy in cargo handling systems
US-10432127-B1 · Oct 1, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02P21/10?
- CPC H02P21/10 is the Cooperative Patent Classification code for “Direct field-oriented control; Rotor flux feed-back control.”
- How many patents are filed under CPC H02P21/10 (Direct field-oriented control; Rotor flux feed-back control)?
- Our database includes 143 publications tagged with this CPC code.
- Is patent activity under CPC H02P21/10 growing?
- Publication counts under this code: 12 in 2024 vs 13 in 2025 (latest complete years).