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Design of an AC‐DC‐AC converter for wind turbines
Author(s) -
Kabalci Ersan,
Irmak Erdal,
Çolak İlhami
Publication year - 2011
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.1770
Subject(s) - total harmonic distortion , rectifier (neural networks) , control theory (sociology) , inverter , voltage , wind power , electrical engineering , turbine , pulse width modulation , harmonics , wind speed , engineering , physics , computer science , machine learning , artificial intelligence , mechanical engineering , stochastic neural network , control (management) , recurrent neural network , artificial neural network , meteorology
Abstract In this study, a Simulink simulation is realized for a converter system that is located between fixed‐speed wind turbine and grid. The 3‐phase output voltage has been modelled as a squirrel cage induction generator output as being the most widely used generator type in wind turbines. The output line voltages of wind turbine has been converted to DC using a 12‐pulse uncontrolled rectifier, and applied to the inverter that is controlled using sinusoidal pulse width modulation. The DC‐AC conversion using three‐level SPWM controlled inverter has been realized in this study, which is performed using Matlab/Simulink. The output harmonics of the designed converter system, which is based on a 10 kW wind turbine, have been minimized adjusting the values such as modulation index (mi) and switching frequency (fsw). The THD ratio of line currents has been decreased to 0.03% at the inverter output, while it was 8.38% at the turbine output. The minimum THD ratios of harmonic analysis are 0.03% for line‐to‐line currents and 1.11% for line‐to‐line voltages. The measured THD ratios are proper to IEEE‐519 standards. Using a controlled rectifier will minimize the harmonic contents for the designed and analyzed system. Copyright © 2010 John Wiley & Sons, Ltd.