Control-Oriented Model of Photovoltaic Systems Based on a Dual Active Bridge Converter

Diego Alejandro Herrera-Jaramillo, Elkin Edilberto Henao-Bravo, Daniel González Montoya, Carlos Andrés Ramos-Paja and Andrés Julián Saavedra-Montes
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Diego Alejandro Herrera-Jaramillo: Departamento de Electrónica y Telecomunicaciones, Instituto Tecnológico Metropolitano, Medellín 050036, Colombia
Elkin Edilberto Henao-Bravo: Departamento de Mecatrónica y Electromecánica, Instituto Tecnológico Metropolitano, Medellín 050036, Colombia
Daniel González Montoya: Facultad de Ingenierias, Instituto Tecnológico Metropolitano, Medellín 050036, Colombia
Carlos Andrés Ramos-Paja: Facultad de Minas, Universidad Nacional de Colombia, Medellín 050041, Colombia
Andrés Julián Saavedra-Montes: Facultad de Minas, Universidad Nacional de Colombia, Medellín 050041, Colombia

Sustainability, 2021, vol. 13, issue 14, 1-22

Abstract: Solar energy is a source of sustainable energy and its optimal use depends on the efficiency and reliability of PV systems. Dual active bridge converters are a solution to interface PV modules with the grid or high voltage requirement applications due to the high voltage-conversion-ratio and high efficiency provided by such a converter. The three main contributions of this work are: an extensive mathematical model of a DAB converter connected to a PV module including protection diodes, which is intended to design non-linear controllers, an explicit linearized version of the model, which is oriented to design traditional control systems; and a detailed and replicable application example of the model focused on maximizing the power extraction from a PV system. The modeling approach starts with the differential equations of the PV system; however, only the fundamental and average components of each signal is used to represent it. The control-oriented model is validated using a detailed circuital simulation. First, through the comparison of frequency and time diagrams of the proposed model and a detailed one; and then, through the simulation of the PV system in a realistic application case. PV voltage regulation and maximum power extraction are confirmed in simulation results.

Keywords: DAB converter; PV system; mathematical model; linear model (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:13:y:2021:i:14:p:7689-:d:591449

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