System and method for monitoring current and providing motor protection
US6924613B2 · kind B2 · utility
8Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2002 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Oct 13, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor controller system comprises solid state switches for connection between an AC line and motor terminals for controlling application of AC power to the motor. A user input elements selects a current imbalance parameter. Current sensors sense current in each winding of the motor. A control circuit controls operation of the solid state switches. The control circuit compares the sensed currents with the selected imbalance parameter to determine if a fault condition exists.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.