Methods and apparatuses for estimating transient slip
US8035322B2 · kind B2 · utility
6Cited by
30References
25Claims
0Family size
Inventors
Key dates
| Filing date | Nov 11, 2008 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Jan 9, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/343
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of determining a slip estimate associated with an induction motor through analysis of voltage and current signals. A fundamental frequency is calculated from a representation (e.g., complex representation) of the voltage signal, and a saliency frequency is calculated from a representation of the current signal. An estimation of slip quantity is calculated according to a slip estimation function that includes the saliency frequency, a saliency order, the fundamental frequency, a quantity of rotor slots, and a quantity of poles of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.