Model predictive current control of grid-connected neutral-point-clamped converters to meet low-voltage ride-through requirements
The low-voltage ride through (LVRT) requirement demands the wind power plants to remain connected to the grid in the presence of grid voltage dips, actively helping the network overall control to keep network voltage and frequency stable. Wind power technology points to increase power ratings. Hence...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/76650 |
| Acceso en línea: | https://hdl.handle.net/2117/76650 https://dx.doi.org/10.1109/TIE.2014.2364459 |
| Access Level: | acceso abierto |
| Palabra clave: | Wind power Low-voltage ride through (LVRT) predictive control reactive support voltage unbalance wind turbine wind power-systems multilevel converters turbines pmsg electronics inverter scheme energy sag Energia eòlica Àrees temàtiques de la UPC::Enginyeria electrònica |
| Sumario: | The low-voltage ride through (LVRT) requirement demands the wind power plants to remain connected to the grid in the presence of grid voltage dips, actively helping the network overall control to keep network voltage and frequency stable. Wind power technology points to increase power ratings. Hence, multilevel converters, as for example, neutral-point-clamped (NPC) converters, are well suited for this application. Predictive current control presents similar dynamic response and reference tracking than other well-established control methods, but working at lower switching frequencies. In this paper, the predictive current control is applied to the grid-side NPC converter as part of a wind energy conversion system, in order to fulfill the LVRT requirements. DC-link neutral-point balance is also achieved by means of the predictive control algorithm, which considers the redundant switching states of the NPC converter. Simulation and experimental results confirm the validity of the proposed control approach. |
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