RT info:eu-repo/semantics/article
T1 Connection system for small and medium-size wind generators through the integration in an MMC and NLC modulation
A1 Martínez Rodrigo, Fernando
A1 Ramirez Prieto, Dionisio
A1 Pablo Gómez, Santiago de
A1 Herrero de Lucas, Luis Carlos
K1 Electric current converters
K1 Convertidores eléctricos
K1 Wind turbines
K1 Energía eólica
K1 Wind power plants
K1 Plantas de energía eólica
K1 Renewable energy resources
K1 Energías renovables
K1 5312.05 Energía
K1 3308 Ingeniería y Tecnología del Medio Ambiente
AB This paper presents a new way of organizing a wind farm with a large number of small to medium-sized turbines. Each wind generator has been included in a switching module of a modular multilevel converter (MMC), which generates the output voltage by near level control (NLC). The proposed topology reduces the number of semiconductors required, switching losses, and voltage filtering requirements. This topology replaces the usual configuration where each wind turbine is connected to a three-phase two-level back-to-back converter plus a filter and then connected in parallel with the other wind generators. To test the topology and its control performance, a case has been developed and simulated for generator configurations producing the same power, for generation imbalances between phases and for imbalances between arms. The analysis of the data shows that the converter works correctly and that it can deliver power to the grid in a balanced way even if the generation has imbalances. The generation imbalances between phases are compensated through the average value of the circulating current, while the imbalances between arms are compensated through the 50 Hz circulating current.
PB MDPI
SN 1996-1073
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/59714
UL https://uvadoc.uva.es/handle/10324/59714
LA eng
NO Energies, 2021, Vol. 14, Nº. 9, 2681
NO Producción Científica
DS UVaDOC
RD 08-jun-2024