Cascaded H-bridge multilevel converter multistring topology for large scale photovoltaic systems

S. Rivera, S. Kouro, B. Wu, J. I. Leon, J. Rodríiguez, L. G. Franquelo

Resultado de la investigación: Contribución a los tipos de informe/libroContribución a la conferencia

159 Citas (Scopus)

Resumen

Large scale grid connected photovoltaic (PV) energy conversion systems have reached the megawatt level. This imposes new challenges on existing grid interface converter topologies and opens new opportunities to be explored. In this paper a new medium voltage multilevel-multistring configuration is introduced based on a three-phase cascaded H-bridge (CHB) converter and multiple string dc-dc converters. The proposed configuration enables a large increase of the total capacity of the PV system, while improving power quality and efficiency. The converter structure is very flexible and modular since it decouples the grid converter from the PV string converter, which allows to accomplish independent control goals. The main challenge of the proposed configuration is to handle the inherent power imbalances that occur not only between the different cells of one phase of the converter but also between the three phases. The control strategy to deal with these imbalances is also introduced in this paper. Simulation results of a 7-level CHB for a multistring PV system are presented to validate the proposed topology and control method.

Idioma originalInglés
Título de la publicación alojadaProceedings - ISIE 2011
Subtítulo de la publicación alojada2011 IEEE International Symposium on Industrial Electronics
Páginas1837-1844
Número de páginas8
DOI
EstadoPublicada - 2011
Evento2011 IEEE International Symposium on Industrial Electronics, ISIE 2011 - Gdansk, Polonia
Duración: 27 jun 201130 jun 2011

Otros

Otros2011 IEEE International Symposium on Industrial Electronics, ISIE 2011
PaísPolonia
CiudadGdansk
Período27/06/1130/06/11

Áreas temáticas de ASJC Scopus

  • Ingeniería eléctrica y electrónica
  • Ingeniería industrial y de fabricación

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    Rivera, S., Kouro, S., Wu, B., Leon, J. I., Rodríiguez, J., & Franquelo, L. G. (2011). Cascaded H-bridge multilevel converter multistring topology for large scale photovoltaic systems. En Proceedings - ISIE 2011: 2011 IEEE International Symposium on Industrial Electronics (pp. 1837-1844). [5984437] https://doi.org/10.1109/ISIE.2011.5984437