A permanent magnet wind turbine is to track a dynamically changing wind from measurements of the wind speed and the rotor speed. Issues of determining the effective wind speed at the turbine rotor are investigated as well as the optimum control strategy to maintain operation at the maximum power point. This is implemented using a hysteresis control system based on the turbine tip speed ratio and then tested on a permanent magnet generator wind turbine in a dynamic wind environment. This showed a small increase in the energy output using the controller. Methods to increase the energy output further are investigated by simulation.
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