Abstract
In the present paper we analyze the operation of a wind power system at maximum power, at rapid variations in wind speed over time. Measuring wind speed and mechanical angular velocity determines the mathematical model of the wind turbine, optimal mechanical angular velocity, mathematical model of the synchronous generator with permanent magnets and dependence on the wind speed of the optimal mechanical angular velocity. It brings the wind power system to the optimal area by changing the load to the generator. The simulations are based on solving the differential momentum of the kinetic momentum, determining the variation in time of the mechanical angular velocity at a certain load of the generator and calculating the power at the wind turbine and the synchronous generator so that the generator load is in the optimal area and stable. The functioning of the wind power system in GALBIORI - Dobrogea area (Romania) is analyzed. Finally, we present the algorithm for calculating the power at the generator, knowing the value of the optimal mechanical angular velocity.
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