System and method for stall detection of a motor
US7196491B2 · kind B2 · utility
15Cited by
49References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2004 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Mar 17, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/024
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor starter system comprises solid state switches for connection between an AC line and motor terminals for controlling application of AC power to the motor. A voltage sensor senses AC line voltage and the motor terminal voltage. Current sensors sense motor current. A control circuit controls operation of the solid state switches. The control circuit limits switch current during a start mode and detects a stall condition responsive to sensed AC line voltage and motor terminal voltage and selectively boosts motor current during the start mode if a stall condition is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.