Abstract
This paper proposes a real-time method for estimating an unbalanced grid impedance using a three-phase converter. In the method, a periodic single-frequency or multi-frequency excitation signal is added to the converter voltage reference. The converter measures currents and voltages at the point of common coupling. The impedance estimate is obtained from the measurements using sliding discrete Fourier transform (SDFT). The method is experimentally validated.
| Original language | English |
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| Title of host publication | Proceedings of the 22nd European Conference on Power Electronics and Applications, EPE’20 ECCE Europe |
| Publisher | IEEE |
| Number of pages | 10 |
| ISBN (Electronic) | 9789075815368 |
| DOIs | |
| Publication status | Published - 7 Sept 2020 |
| MoE publication type | A4 Conference publication |
| Event | European Conference on Power Electronics and Applications - Virtual, Online Duration: 7 Sept 2020 → 11 Sept 2020 Conference number: 22 |
Publication series
| Name | European Conference on Power Electronics and Applications |
|---|---|
| Publisher | IEEE |
| ISSN (Print) | 2325-0313 |
Conference
| Conference | European Conference on Power Electronics and Applications |
|---|---|
| Abbreviated title | EPE-ECCE Europe |
| City | Virtual, Online |
| Period | 07/09/2020 → 11/09/2020 |
| Other | Virtual conference |
Keywords
- Converter control
- Estimation technique
- Impedance measurement
- Three-phase system