Predictive control of four-leg converters for photovoltaic energy systems

Venkata Yaramasu, Marco Rivera, Apparao Dekka, Jose Rodriguez

Resultado de la investigación: Contribución a los tipos de informe/libroCapítulorevisión exhaustiva


Photovoltaic energy systems are one of the most widely adopted distributed generation facilities. This book chapter presents predictive based current and voltage control strategies for four-leg converters employed in grid-connected and standalone photovoltaic energy systems, respectively. The proposed approach employs the novel stationary frame sampled-data models of the four-leg converters with inductive (L) and inductive-capacitive (LC) filters on the output side to predict the control variables such as output currents and load voltages. These predictions are performed using all the possible switching states of four-leg converters. The objective of minimizing the error between reference and predicted variables (load currents or voltages) is fulfilled through a cost function in the predictive control schemes. In addition, the voltage balancing of DC-bus capacitors is considered with the four-leg neutral-point clamped converters. The optimal switching states corresponding to the minimal cost function value are chosen and directly applied to the converter. The predictive control strategies fulfil the control requirements such as load cur-rent/voltage control, DC-bus voltage balancing, and neutral-leg switching frequency minimization. The simulation and experimental studies conducted using unbalanced and nonlinear loads to validate the proposed predictive control strategies.

Idioma originalInglés
Título de la publicación alojadaPower Systems
EditorialSpringer Verlag
Número de páginas25
EstadoPublicada - 1 ene 2019

Serie de la publicación

NombrePower Systems
ISSN (versión impresa)1612-1287
ISSN (versión digital)1860-4676

Áreas temáticas de ASJC Scopus

  • Ingeniería energética y tecnologías de la energía
  • Ingeniería eléctrica y electrónica

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