Abstract
This paper analyzes the sub-synchronous control interaction of droop-controlled grid-forming voltage-source converters (VSCs). The complex-valued impedance model of the droop-controlled VSC in the stationary frame is proposed first, based on which the grid-VSC interaction is characterized. It is revealed that the sub-synchronous resonances can be induced in stiff grids, owing to the interactions of inner voltage control loop and the outer power control loop. Experimental tests corroborate the theoretical analysis.
| Original language | English |
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| Title of host publication | 2019 4th IEEE Workshop on the Electronic Grid, eGRID 2019 |
| Publisher | IEEE |
| Publication date | Nov 2019 |
| Article number | 9092640 |
| ISBN (Print) | 978-1-7281-5705-4 |
| ISBN (Electronic) | 9781728157047 |
| DOIs | |
| Publication status | Published - Nov 2019 |
| Event | 4th IEEE Workshop on the Electronic Grid, eGRID 2019 - Xiamen, China Duration: 11 Nov 2019 → 14 Nov 2019 |
Conference
| Conference | 4th IEEE Workshop on the Electronic Grid, eGRID 2019 |
|---|---|
| Country/Territory | China |
| City | Xiamen |
| Period | 11/11/2019 → 14/11/2019 |
Keywords
- Droop control
- Grid forming
- Sub-synchronous resonance
- Voltage control
- Voltage-source converter