System and method for individual phase motor over voltage protection
US7006338B2 · kind B2 · utility
5Cited by
10References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2002 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Mar 9, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/295
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor controller comprises a plurality of solid state switches each for connection between an AC line and a motor winding terminal for controlling application of AC power to the motor. A plurality of voltage sensors, each associated with one of the solid state switches, sense voltage for an associated motor winding. A control circuit controls operation of the solid state switches. The control circuit adjusts firing to one of the solid state switches if the sensed voltage for the associated winding varies from a threshold voltage by a select amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.