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The amount of energy obtained from a wind turbine depends not only on the wind regime but also on the control technique used to govern the turbine. When wind speed changes, the turbine moves away from its optimal tip speed ratio until maximum power point tracking forces the turbine to operate at its optimal speed. For rapid wind speed changes, the maximum power point tracking controller can take longer...
In recent years, an increasing proportion of small wind turbines have been connected to the electrical grid. With appropriate switchgear and control, it should be possible to use grid power to operate the generator as a motor for faster starting of the turbine. The artificial case of a step increase in wind speed from zero is considered. It is shown that motoring yields an energy gain for all wind...
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