Position and speed calculation for an electric generator
US-2020358384-A1 · Nov 12, 2020 · US
Circuit arrangements for detecting rotor position
Circuit arrangements for detecting rotor position · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P9/009 |
| Official title | {Circuit arrangements for detecting rotor position} |
| Display label | Circuit arrangements for detecting rotor position |
| Total patents | 102 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 8 |
| 2017 | 9 |
| 2018 | 13 |
| 2019 | 16 |
| 2020 | 7 |
| 2021 | 14 |
| 2022 | 11 |
| 2023 | 6 |
| 2024 | 5 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Printed circuit board based exciter
US-10826418-B2 · Nov 3, 2020 · US
Data-Driven Nonlinear Output-Feedback Control of Power Generators
US-2020310372-A1 · Oct 1, 2020 · US
Power system
US-10770997-B2 · Sep 8, 2020 · US
Speed detection circuits for permanent magnet alternators
US-10581348-B2 · Mar 3, 2020 · US
Alternator flux shaping
US-10581358-B2 · Mar 3, 2020 · US
Starting power generation apparatus and starting power generation method
US-10514011-B2 · Dec 24, 2019 · US
Power system
US-2019372494-A1 · Dec 5, 2019 · US
Power system
US-2019372493-A1 · Dec 5, 2019 · US
Angle determination for a generator
US-2019368898-A1 · Dec 5, 2019 · US
Externally modulated independent speed variable frequency generator
US-10498273-B2 · Dec 3, 2019 · US
Dynamic generator voltage control for high power drilling and logging-while-drilling
US-2019363655-A1 · Nov 28, 2019 · US
Permanent magnet synchronous generator based direct current power generating system
US-10483888-B2 · Nov 19, 2019 · US
Externally modulated independent speed variable frequency generator
US-2019326839-A1 · Oct 24, 2019 · US
Alternator Flux Shaping
US-2019305704-A1 · Oct 3, 2019 · US
Dynamic generator voltage control for high power drilling and logging-while-drilling
US-10411626-B2 · Sep 10, 2019 · US
Starting power generation apparatus and starting power generation method
US-10355628-B2 · Jul 16, 2019 · US
Printed circuit board based exciter
US-2019190418-A1 · Jun 20, 2019 · US
Power angle feedforward signal for phase locked loop in wind turbine power systems
US-10305283-B1 · May 28, 2019 · US
Printed circuit board based exciter
US-10256758-B2 · Apr 9, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02P9/009?
- CPC H02P9/009 is the Cooperative Patent Classification code for “Circuit arrangements for detecting rotor position.”
- How many patents are filed under CPC H02P9/009 (Circuit arrangements for detecting rotor position)?
- Our database includes 102 publications tagged with this CPC code.
- Is patent activity under CPC H02P9/009 growing?
- Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).