Circulating current and oscillating current suppressing method and parallel inverter driver system
US-2016373044-A1 · Dec 22, 2016 · US
Reduction of harmonics
Reduction of harmonics · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P29/50 |
| Official title | Reduction of harmonics |
| Display label | Reduction of harmonics |
| Total patents | 731 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 39 |
| 2016 | 52 |
| 2017 | 52 |
| 2018 | 65 |
| 2019 | 73 |
| 2020 | 70 |
| 2021 | 60 |
| 2022 | 77 |
| 2023 | 72 |
| 2024 | 85 |
| 2025 | 67 |
| 2026 | 19 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Apparatus for controlling rotary machine
US-9517704-B2 · Dec 13, 2016 · US
Controlling an electrical consumer of an aircraft
US-2016359433-A1 · Dec 8, 2016 · US
Motor driving method, motor driving device, and hard disk device
US-9503011-B2 · Nov 22, 2016 · US
Variable speed drive with active converter
US-2016329851-A1 · Nov 10, 2016 · US
Three-phase rotating machine controller
US-2016315577-A1 · Oct 27, 2016 · US
Noise control for a wind turbine
US-2016290320-A1 · Oct 6, 2016 · US
Control apparatus for electric power inverter
US-2016294317-A1 · Oct 6, 2016 · US
Motor drive controller and method for controlling motor
US-2016276974-A1 · Sep 22, 2016 · US
Control apparatus for rotating machine
US-9450524-B2 · Sep 20, 2016 · US
Method for actuating a brushless motor
US-2016261221-A1 · Sep 8, 2016 · US
Apparatus for controlling AC motor
US-9413281-B2 · Aug 9, 2016 · US
Power conversion device
US-2016226425-A1 · Aug 4, 2016 · US
Apparatus for carrying out improved control of rotary machine
US-9325274-B2 · Apr 26, 2016 · US
Semiconductor device and inverter system
US-2016105130-A1 · Apr 14, 2016 · US
Method and system for controlling motor of environmentally-friendly vehicle
US-9306489-B2 · Apr 5, 2016 · US
Power conversion apparatus
US-9257931-B2 · Feb 9, 2016 · US
Motor controller
US-9252700-B2 · Feb 2, 2016 · US
Apparatus for controlling rotary machine
US-2016028339-A1 · Jan 28, 2016 · US
Motor driving circuit and electronic apparatus using the same
US-9236829-B2 · Jan 12, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02P29/50?
- CPC H02P29/50 is the Cooperative Patent Classification code for “Reduction of harmonics.”
- How many patents are filed under CPC H02P29/50 (Reduction of harmonics)?
- Our database includes 731 publications tagged with this CPC code.
- Is patent activity under CPC H02P29/50 growing?
- Publication counts under this code: 85 in 2024 vs 67 in 2025 (latest complete years).