System and method for impedance measurement using series and shunt injection
US9562939B2 · kind B2 · utility
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Inventors
Key dates
| Filing date | Jul 30, 2013 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | Oct 1, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for impedance measurement in a three-phase AC system is provided. The method includes injecting a shunt perturbation signal into the three-phase AC system and collecting a response to the shunt perturbation signal, and injecting a series perturbation signal into the three-phase AC system and collecting a response to the series perturbation signal. The response to the shunt perturbation signal and the response to the series perturbation signal are then transferred from abc coordinate to dq coordinates. At least one impedance of the three-phase AC system is calculated based on the response to the shunt perturbation signal and the response to the series perturbation signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.