Control System of DFIG for Wind Power Generation Systems

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Electrical power is the most widely used source of energy for our homes, work places and industries. Population and industrial growth have led to significant increases in power consumption over the past three decades. Natural resources like coal, petroleum and gas that have driven our power plants, industries and vehicles for many decades are becoming depleted at a very fast rate. This serious issue has motivated nations across the world to think about alternative forms of energy which utilize inexhaustible natural resources. Renewable energy like solar, wind, and tidal currents of oceans is sustainable, inexhaustible and environmentally friendly clean energy. Due to all these factors, wind power generation has attracted great interest in recent years. Undoubtedly, wind power is today’s most rapidly growing renewable energy source. Many of the new, large turbines being produced are variable speed turbines, which use doubly fed induction generators (DFIG). These are induction generators which have their stator and rotor independently excited. Turbines of this type are becoming increasingly popular, because the converters required to control them are cheap and subject to less losse