Electric motor controller and methods of determining input power line energization
US9806626B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2014 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Dec 8, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric motor controller and methods of determining which input power line of a plurality of input power lines of a motor drive controller has been energized are provided. An electric motor controller configured to be coupled to an electric motor includes a plurality of power input lines configured to receive an alternating current (AC) input voltage from an AC power source, an energized line detection device configured to sense that a power input line has been energized by the AC power source, and configured to output an isolated signal, and a rectifier configured to convert the AC input voltage having a frequency to a direct current (DC) voltage. The controller also includes a computing device coupled downstream from the energized line detection device and configured to determine which input power line has been energized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.