Motor condition and performance analyzer
US6308140A · kind A · utility
80Cited by
26References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2000 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Jun 6, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/343
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting broken rotor bars including sensing currents applied to the motor, converting the senses signals to digital data signals, and storing the digital data signals. A processor evaluates the digital data to provide a current signal spectrum at various selected sidebands. Sideband peaks having an amplitude within a predetermined value are identified, indicating potential motor problems or developing problems, including winding faults and broken rotor bars. Advanced signal processing techniques are used to further evaluate stored data and to provide trending information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.