Electric motor enabling speed change and efficient range change accordingly
US-2024154559-A1 · May 9, 2024 · US
wherein the motor speed is changed by switching from a delta to a star, e.g. wye, connection of its windings, or vice versa
wherein the motor speed is changed by switching from a delta to a star, e.g. wye, connection of its windings, or vice versa · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P25/184 |
| Official title | {wherein the motor speed is changed by switching from a delta to a star, e.g. wye, connection of its windings, or vice versa} |
| Display label | wherein the motor speed is changed by switching from a delta to a star, e.g. wye, connection of its windings, or vice versa |
| Total patents | 168 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 3 |
| 2017 | 7 |
| 2018 | 9 |
| 2019 | 11 |
| 2020 | 25 |
| 2021 | 28 |
| 2022 | 22 |
| 2023 | 18 |
| 2024 | 17 |
| 2025 | 21 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Apparatus and method for controlling switching of high speed wiring mode of a motor
US-2020403549-A1 · Dec 24, 2020 · US
Dual-inverter for a brushless motor
US-10833611-B2 · Nov 10, 2020 · US
Motor drive unit, compressor, and air conditioner
US-2020321900-A1 · Oct 8, 2020 · US
Rotary electric machine apparatus
US-2020321899-A1 · Oct 8, 2020 · US
Driving device, air conditioner, and method for driving motor
US-10763773-B2 · Sep 1, 2020 · US
Electric motor drive device
US-2020252017-A1 · Aug 6, 2020 · US
Motor drive device
US-2020235691-A1 · Jul 23, 2020 · US
Air conditioner
US-2020212833-A1 · Jul 2, 2020 · US
Motor drive device and air conditioner
US-2020204101-A1 · Jun 25, 2020 · US
Drive apparatus for electric motor and air conditioner
US-2020186072-A1 · Jun 11, 2020 · US
Driving device, air conditioner, and driving method
US-2020186073-A1 · Jun 11, 2020 · US
Emergency power supply system, aircraft having such an emergency power supply system and a method for providing at least electric power and hydraulic power in case of an emergency in an aircraft
US-10676208-B2 · Jun 9, 2020 · US
Air-conditioning apparatus
US-2020173703-A1 · Jun 4, 2020 · US
Driving device, compressor, air conditioner and method of driving interior permanent magnet motor
US-2020177114-A1 · Jun 4, 2020 · US
Motor drive system and air conditioner
US-2020169207-A1 · May 28, 2020 · US
Electric-motor driving device and refrigeration-cycle application apparatus including electric-motor driving device
US-2020162009-A1 · May 21, 2020 · US
Driving device, compressor, air conditioner, and driving method
US-2020144951-A1 · May 7, 2020 · US
Wye-Delta eDrive system for electric vehicles
US-10618424-B2 · Apr 14, 2020 · US
Motor starter for synchronous machine
US-2020076333-A1 · Mar 5, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02P25/184?
- CPC H02P25/184 is the Cooperative Patent Classification code for “wherein the motor speed is changed by switching from a delta to a star, e.g. wye, connection of its windings, or vice versa.”
- How many patents are filed under CPC H02P25/184 (wherein the motor speed is changed by switching from a delta to a star, e.g. wye, connection of its windings, or vice versa)?
- Our database includes 168 publications tagged with this CPC code.
- Is patent activity under CPC H02P25/184 growing?
- Publication counts under this code: 17 in 2024 vs 21 in 2025 (latest complete years).