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Design and implementation of all-SiC MPPT boost converter for grid connected photovoltaic systems
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index.pdf
Date
2019
Author
Koç, Elif Tuğçe
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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Output power generated by a photovoltaic array is prone to fluctuations during utilization due to varying solar irradiance exposure throughout the day and changes in cell temperature; therefore, maximum power point tracking is essential for overall system efficiency. For this purpose, DC-DC Maximum Power Point Tracker (MPPT) Converters are used in photovoltaic systems connected to the grid in order to extract the available power. SiC semiconductors are favorable new devices that enable greater power conversion efficiency than Si semiconductors; therefore, these devices have become strong candidates in new photovoltaic converter designs. In this thesis, design, implementation and functional testing of a 10 kW All-SiC MPPT Boost Converter is presented. For power conversion efficiency comparisons, the converter was implemented in such a way that the power and control stages could be operated in four different configurations of which are Two-Phase Interleaved Boost Converter, Two-Phase Interleaved Synchronous Boost Converter, Conventional (Single-Phase) Boost Converter, Synchronous (Single-Phase) Boost Converter. The designed converter was tested with a DC supply with photovoltaic power emulation capability at different input powers to analyze the operation and gather power conversion efficiency data of each configuration option. A calorimeter was designed and implemented as part of the thesis in order to estimate power conversion efficiency values.
Subject Keywords
Photovoltaic power systems.
,
Keywords: Maximum Power Point Tracking
,
Boost Converter
,
Interleaving
,
Silicon Carbide
,
Calorimeter
,
Photovoltaic.
URI
http://etd.lib.metu.edu.tr/upload/12624327/index.pdf
https://hdl.handle.net/11511/44194
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Graduate School of Natural and Applied Sciences, Thesis
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E. T. Koç, “Design and implementation of all-SiC MPPT boost converter for grid connected photovoltaic systems,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Electrical and Electronics Engineering., 2019.