Abstract
With the fast development in Photovoltaic (PV) technology, the relevant grid-connection requirements/standards are continuously being updated, and more challenges have been imposed on both single-phase and three-phase grid-connected PV systems. For instance, PV systems are currently required to remain connected under grid voltage sags (even zero voltage condition). In this case, much attention should be paid to the grid synchronization in such a way to properly ride-through grid faults. Thus, in this paper, the most commonly-used and recently-developed Phase Locked Loop (PLL) synchronization methods have been evaluated for single-phase grid-connected PV systems in the case of Zero-Voltage Ride-Through (ZVRT) operation. The performances of the prior-art PLL methods in response to zero voltage faults in terms of detection precision and dynamic response are assessed in this paper. Simulation results show that the Enhanced PLL (EPLL) and the Second Order Generalized Integrator based PLL (SOGI-PLL) are the most applicable to single-phase PV systems for ZVRT operation.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the IEEE Southern Power Electronics Conference (SPEC), 2016 |
| Number of pages | 6 |
| Publisher | IEEE Press |
| Publication date | Dec 2016 |
| ISBN (Electronic) | 978-1-5090-1546-7 |
| DOIs | |
| Publication status | Published - Dec 2016 |
| Event | IEEE SPEC 2016 - Southern Power Electronic Conference - Auckland, New Zealand Duration: 5 Dec 2016 → 8 Dec 2016 http://www.ieee-spec.org/ |
Conference
| Conference | IEEE SPEC 2016 - Southern Power Electronic Conference |
|---|---|
| Country/Territory | New Zealand |
| City | Auckland |
| Period | 05/12/2016 → 08/12/2016 |
| Internet address |
Keywords
- Single-phase
- Zero-voltage ride-through (ZVRT)
- Low-voltage ride-through (LVRT)
- Grid Synchronization
- Phase-locked loop (PLL)