Controller and drive circuit for electric motors
US-12378969-B2 · Aug 5, 2025 · US
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by using a specially adapted frequency converter
by using a specially adapted frequency converter · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P1/426 |
| Official title | {by using a specially adapted frequency converter} |
| Display label | by using a specially adapted frequency converter |
| Total patents | 22 |
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 | 1 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 4 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hybrid drive circuit for variable speed induction motor system and methods of control
US-11881801-B2 · Jan 23, 2024 · US
Hybrid drive circuit for variable speed induction motor system and methods of control
US-2023344379-A1 · Oct 26, 2023 · US
Hybrid drive circuit for variable speed induction motor system and methods of control
US-11716040-B2 · Aug 1, 2023 · US
Controller and drive circuit for electric motors
US-2022341434-A1 · Oct 27, 2022 · US
Controller for a cooling unit compressor, system and use
US-11402139-B2 · Aug 2, 2022 · US
Hybrid drive circuit for variable speed induction motor system and methods of control
US-2021143766-A1 · May 13, 2021 · US
Compressor unit, refrigeration circuit comprising the same and method of operating a compressor unit
US-10948225-B2 · Mar 16, 2021 · US
Hybrid drive circuit for variable speed induction motor system and methods of control
US-10931219-B2 · Feb 23, 2021 · US
Method for controlling medium-voltage inverter and system comprising the same
US-10425016-B2 · Sep 24, 2019 · US
Controller for a cooling unit compressor, system and use
US-2019234663-A1 · Aug 1, 2019 · US
Compressor unit, refrigeration circuit comprising the same and method of operating a compressor unit
US-2019145681-A1 · May 16, 2019 · US
Hybrid drive circuit for variable speed induction motor system and methods of control
US-2019006977-A1 · Jan 3, 2019 · US
Method for controlling medium-voltage inverter and system comprising the same
US-2018316278-A1 · Nov 1, 2018 · US
Drive circuit for electric motors
US-2018269810-A1 · Sep 20, 2018 · US
Hybrid drive circuit for variable speed induction motor system and methods of control
US-10075118-B2 · Sep 11, 2018 · US
Dual-drive electric motor control system and methods for hybrid operation of electric motors
US-9979328-B1 · May 22, 2018 · US
Hybrid drive circuit for variable speed induction motor
US-9800188-B2 · Oct 24, 2017 · US
Hybrid drive circuit for variable speed induction motor
US-2017077857-A1 · Mar 16, 2017 · US
Hybrid drive circuit for variable speed induction motor system and methods of control
US-2017077859-A1 · Mar 16, 2017 · US