A Model-Based Approach of DC-DC Converters Dedicated to Controller Design Applications for Photovoltaic Generators
- 1. Laboratory of Application of Energy, Efficiency and Renewable Energies, Faculty of Sciences of Tunis, Tunis El Manar University, Tunis, Tunisia zeinebrania.labidi@fst.utm.tn
- 2. Department of Engineering, University of Applied Sciences for Engineering and Economics, Berlin, Germany horst.schulte@htw-berlin.de
- 3. Laboratory of Application of Energy, Efficiency and Renewable Energies, Faculty of Sciences of Tunis, Tunis El Manar University, Tunis, Tunisia abdelkader.mami@fst.utm.tn
Description
In this paper, a model-based approach of DC-DC converters dedicated to controller design applications for photovoltaic generators is introduced. The paper provides a mathematic averaging model, based on the state space method for DC-DC converters that is used as an adaptation level in photovoltaic generators. This modeling allows the dynamics of the system to be described by presenting a reliable model to be used for oriented controller design. The two most needed topologies of DC-DC converters are proposed, buck and buckboost, and an overview of integral state feedback controller design using a model-based approach for a boost converter connected to a photovoltaic generator described in our previous published work is provided. The model-based conception of both converter types is analyzed for optimal use in control-oriented design. The validation of each model is demonstrated by comparative curves represented by a detailed plant model using Simscape devices available and implemented in Simulink/Matlab
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