Method for the diagnostics of electromechanical system based on impedance analysis
US10310016B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2013 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Sep 9, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is concerned with a method for diagnosing the state of electromechanical systems in which electrical rotating machinery is used on the basis of analysis of impedance estimated from at least two currents and two voltages, measured during an operation of the electromechanical system. The method may be especially useful in the condition monitoring of electric motors and generators. The invention combines the information from both the voltage and current signals measurable at the motor terminals. Specifically, the measurements of voltage and current from two or more phases of a polyphase electrical machine are combined to estimate the impedance of the machine, impedance being the resistance to the flow of current that a circuit exhibits when a voltage is applied to it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.