Methods of braking motors and motor starters employing the same
US11967917B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 2022 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Feb 23, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P3/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Pairs of phases of an AC power source are connected to pairs of phases of a motor in a first sequence that repeats at a first frequency. The motor is braked by connecting pairs of phases of the AC power source to pairs of phases of the motor in a second sequence that is reversed with respect to the first sequence and that repeats at a second frequency less than the first frequency. In further aspects, pairs of phases of an AC power source are connected to pairs of phases of a motor in a first sequence. The motor is subsequently disconnected from the AC power source for a predetermined dwell interval having a duration greater than a time constant of the motor. The motor is braked using a second sequence that is reversed with respect to the first sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.