Abstract
This paper presents two real-time methods for estimating the grid inductance and resistance using a three-phase converter. In the methods, a single-frequency rotating voltage signal with a small magnitude is injected to the converter voltage reference. The converter measures the currents and voltages at the point of common coupling (PCC). The grid impedance is estimated from the measured data using two alternative methods: an estimator based on the sliding discrete Fourier transform (SDFT) and an adaptive grid observer. Dynamic performance of these methods is compared by means of simulations and experiments in the case of a changing grid impedance.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 11th IEEE Energy Conversion Congress and Exposition, ECCE 2019 |
| Publisher | IEEE |
| Pages | 6005-6012 |
| Number of pages | 8 |
| ISBN (Electronic) | 978-1-7281-0395-2 |
| DOIs | |
| Publication status | Published - 29 Sept 2019 |
| MoE publication type | A4 Conference publication |
| Event | IEEE Energy Conversion Congress and Exposition - Baltimore, United States Duration: 29 Sept 2019 → 3 Oct 2019 Conference number: 11 |
Publication series
| Name | IEEE Energy Conversion Congress and Exposition |
|---|---|
| Publisher | IEEE |
| ISSN (Print) | 2329-3721 |
| ISSN (Electronic) | 2329-3748 |
Conference
| Conference | IEEE Energy Conversion Congress and Exposition |
|---|---|
| Abbreviated title | ECCE |
| Country/Territory | United States |
| City | Baltimore |
| Period | 29/09/2019 → 03/10/2019 |
Keywords
- Adaptive observer
- Grid converter
- Impedance estimation
- Sliding
- DFT