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Sensorless Fuzzy MPPT Technique of Solar PV and DFIG Based Wind Hybrid System


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DOI: https://doi.org/10.15866/iremos.v10i3.11361

Abstract


This paper presents a method for estimating the power of a PV combined with a wind system based on a Doubly Fed Induction Generator (DFIG). This estimated power is used for calculating the maximum power point tracking algorithm. A turbine drives the DFIG, its stator is attached directly to the grid, while its rotor is connected to the grid through a back-to-back converter. The PV system is used with a buck-boost converter, which is linked to the DC bus of the back-to-back converter. This structure eliminates the inverter with its associated devices. In this work, the MPPT algorithm is based on fuzzy logic whose inputs are: the previous duty cycle and the estimated power based on the calculation made by the DFIG. This allows removing the voltage and current sensors. The simulation results present the performance of the proposed method subjected to irradiation and wind speed variations at different operating modes.
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Keywords


Sensorless MPPT; Photovoltaic; Doubly Fed Induction Generator; Fuzzy MPPT; Hybrid System

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References


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