DoctorateOpen Access

Implementation of photovoltaic sourced interval type ? 2 fuzzy logic controlled two stage converter

2012
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Advisor: Prof. Dr. Ömer Faruk Bay

Abstract (EN)

Conglomeration of harmful gases released to the environment on the atmosphere continues because of using consumable fossil fuels for energy production. So interest in the studies about clean and sustainable energy production increases. The sun has advantages such as no wastes polluting the atmosphere like gas and radiation, minimal operation cost except for installation for solar energy systems, noiseless study, low maintenance cost due not to containing movable parts. Power circuits are needed for usable solar energy supplied from the solar panels. These power circuits are non-linear structure and contain uncertainties. Conventional controllers cannot be enough to overcome these uncertainties. In this thesis study, design and implementation of three phase space vector modulated (SVM) inverter and DC ? DC boost converter that increases the voltage from the solar panels to appropriate DC level for this inverter input has been performed. Type ? 2 fuzzy logic controller (FLC) which has high performance for modelling uncertainties has been improved as control algortihm for both the DA ? DA converter and the inverter. The system has been controlled with proportional ? integral (PI) controller and type ? 1 FLC to show the superiority of improved type ? 2 FLC algorithm. The control of the system has been done as simulation firstly and then real time application. MATLAB, Simulink and Simpower have been used for simulations. The system has been controlled with TMS320F28335 DSP on eZdsp F28335 DSP module for real time application.Settling time, overshoot and load variation responses has been investigated for the converter which is the first stage of the system individually controlled by each control algorithm and type ? 2 FLC has supplied the best performance. Current and voltage harmonic analysis, frequency and phase angle data have been analyzed for three phase inverter which is the second stage. Interval type ? 2 FLC has offered the best solution for the inverter.

Author

Meral Özarslan Yatak

How to Cite

Meral Özarslan Yatak (Doctorate thesis). Implementation of photovoltaic sourced interval type ? 2 fuzzy logic controlled two stage converter, 2012, Gazi University.

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