Variable frequency drive system with medium voltage input and low voltage output
US-2026095117-A1 · Apr 2, 2026 · US
AC-AC converter stage controlled to provide a defined AC voltage
AC-AC converter stage controlled to provide a defined AC voltage · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P2201/01 |
| Official title | AC-AC converter stage controlled to provide a defined AC voltage |
| Display label | AC-AC converter stage controlled to provide a defined AC voltage |
| Total patents | 48 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 4 |
| 2019 | 3 |
| 2020 | 8 |
| 2021 | 5 |
| 2022 | 7 |
| 2023 | 3 |
| 2024 | 6 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Variable frequency drive system with medium voltage input and low voltage output
US-12451827-B2 · Oct 21, 2025 · US
Motor drive device and refrigeration cycle apparatus
US-2025219564-A1 · Jul 3, 2025 · US
Voltage driving circuit and system and household appliance
US-12334838-B2 · Jun 17, 2025 · US
Voltage Driving Circuit and System and Household Appliance
US-2025132688-A1 · Apr 24, 2025 · US
Motor driving apparatus and method
US-12199544-B2 · Jan 14, 2025 · US
Motor flying start using field weakening control
US-12176837-B2 · Dec 24, 2024 · US
Motor flying start using field weakening control
US-2024195339-A1 · Jun 13, 2024 · US
Varibale frequency drive system with medium voltage input and low voltage output
US-2024186930-A1 · Jun 6, 2024 · US
Open loop phase pre-charge
US-11984814-B2 · May 14, 2024 · US
Active DC bus voltage balancing circuit
US-11984829-B2 · May 14, 2024 · US
Motor driving apparatus and method
US-2024039435-A1 · Feb 1, 2024 · US
Power conversion apparatus that drives a motor by receiving a three-phase AC voltage from an AC power system
US-11728742-B2 · Aug 15, 2023 · US
Active dc bus voltage balancing circuit
US-2023198446-A1 · Jun 22, 2023 · US
Method and apparatus to mitigate DC bus over-voltages on common AC bus systems utilizing DC and AC drives
US-11652421-B2 · May 16, 2023 · US
Generator systems and controllers
US-11502617-B2 · Nov 15, 2022 · US
System and method for sinusoidal output and integrated EMC filtering in a motor drive
US-11387761-B2 · Jul 12, 2022 · US
Method and apparatus to mitigate dc bus over-voltages on common ac bus systems utilizing dc & ac drives
US-2022216800-A1 · Jul 7, 2022 · US
Method and apparatus to mitigate DC bus over-voltages on common AC bus systems utilizing DC and AC drives
US-11342861-B2 · May 24, 2022 · US
Method and apparatus to mitigate dc bus over-voltages on common ac bus systems utilizing dc & ac drives
US-2022103086-A1 · Mar 31, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02P2201/01?
- CPC H02P2201/01 is the Cooperative Patent Classification code for “AC-AC converter stage controlled to provide a defined AC voltage.”
- How many patents are filed under CPC H02P2201/01 (AC-AC converter stage controlled to provide a defined AC voltage)?
- Our database includes 48 publications tagged with this CPC code.
- Is patent activity under CPC H02P2201/01 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).