Variable speed constant frequency power generator including permanent magnet exciter
US-2016380568-A1 · Dec 29, 2016 · US
Electricity
Electricity · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P9/007 |
| Official title | — |
| Display label | Electricity (mapped technology topic) |
| Total patents | 432 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 36 |
| 2016 | 33 |
| 2017 | 29 |
| 2018 | 61 |
| 2019 | 50 |
| 2020 | 55 |
| 2021 | 31 |
| 2022 | 41 |
| 2023 | 35 |
| 2024 | 39 |
| 2025 | 18 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and Methods for Increasing Wind Turbine Power Output
US-2016369776-A1 · Dec 22, 2016 · US
High voltage direct current system with improved generator excitation
US-2016373038-A1 · Dec 22, 2016 · US
System and method for controlling a power generation system based on a detected islanding event
US-9520819-B2 · Dec 13, 2016 · US
System and method for controlling a power generation system connected to a weak grid
US-9503007-B2 · Nov 22, 2016 · US
Electrical rotating machine system or wind turbine system
US-9484793-B2 · Nov 1, 2016 · US
System and method for improving reactive current response time in a wind turbine
US-9458830-B2 · Oct 4, 2016 · US
Wind power generation system and control method thereof
US-2016285399-A1 · Sep 29, 2016 · US
System and method for controlling a dual-fed induction generator in response to high-voltage grid events
US-9450415-B2 · Sep 20, 2016 · US
Systems and methods for increasing wind turbine power output
US-9447772-B2 · Sep 20, 2016 · US
Wind turbine converter
US-2016230743-A1 · Aug 11, 2016 · US
Power conversion system and controlling method thereof and wind turbine power generation system
US-2016197559-A1 · Jul 7, 2016 · US
Systems and methods for increasing wind turbine power output
US-2016177923-A1 · Jun 23, 2016 · US
Dynamic braking system for an electric power system and method of operating the same
US-9369076-B2 · Jun 14, 2016 · US
System and method for optimizing wind turbine operation
US-2016146191-A1 · May 26, 2016 · US
Current balance control for non-interleaved parallel bridge circuits in power converter
US-9343991-B2 · May 17, 2016 · US
Jet engine assembly and method for generating electricity
US-2016130970-A1 · May 12, 2016 · US
Optimized filter for battery energy storage on alternate energy systems
US-9337685-B2 · May 10, 2016 · US
Method and arrangement for determining leakage inductances of double fed induction generator
US-2016099670-A1 · Apr 7, 2016 · US
Method and control arrangement for controlling a reactive power source
US-2016084229-A1 · Mar 24, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02P9/007?
- CPC H02P9/007 is the Cooperative Patent Classification code for “Electricity.”
- How many patents are filed under CPC H02P9/007 (Electricity)?
- Our database includes 432 publications tagged with this CPC code.
- Is patent activity under CPC H02P9/007 growing?
- Publication counts under this code: 39 in 2024 vs 18 in 2025 (latest complete years).