lecture 24 wind

lecture 24 wind - Lecture 26 Power converters in wind...

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Lecture 26 Power converters in wind generator systems
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3 1 2 mech p PC A v P mech : mechanical power extracted C p : power coefficient A : area of the rotor sweep : air density : wind speed Power extracted by wind generators v p C is a function of the tip speed ratio (ratio of speed of tip of blade to wind speed) and pitch angle
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A B C D S. Muller, M. Deicke, and R. W. De Doncker, "Doubly fed induction generator systems for wind turbines," Industry Applications Magazine, IEEE, vol. 8, pp. 26 33, 2002. Maximum power at different wind speeds
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Wind generator – Type 1 Constant speed, sub optimal energy extraction Need for capacitor banks to provide reactive power support Least expensive No slip rings, hence rugged and reliable
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Wind generator – Type 2 Limited speed variation through external resistor Need for capacitor banks to provide reactive power support
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Wind generator – Type 3 Permanent magnet AC machine or induction (cage or wound rotor) machine
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lecture 24 wind - Lecture 26 Power converters in wind...

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