Speed control of variable-speed multiple-phase motors
US-10084406-B2 · Sep 25, 2018 · US
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varying the frequency by omitting half waves
varying the frequency by omitting half waves · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02P27/18 |
| Official title | varying the frequency by omitting half waves |
| Display label | varying the frequency by omitting half waves |
| Total patents | 6 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2018 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Power frequency converter and associated method
US-9484828-B2 · Nov 1, 2016 · US
Method and assembly for operating synchronous motors
US-9379646-B2 · Jun 28, 2016 · US
Speed Control of Variable-Speed Multiple-Phase Motors
US-2016099671-A1 · Apr 7, 2016 · US
Speed control of variable-speed multiple-phase motors
US-9214890-B2 · Dec 15, 2015 · US
Power frequency converter and associated method
US-2015249399-A1 · Sep 3, 2015 · US