Patent ID: 8461709

Claim:
An asynchronous power generator for a wind turbine, comprising: a voltage supply; and a stator with at least one stator coil supplied with an alternating voltage by the voltage supply, wherein the voltage supply is configured to adjust a voltage supplied to the at least one stator coil based upon an output power generated by the wind turbine for reducing noise from the asynchronous power generator, wherein the voltage supply adjusts the voltage supplied to the at least one stator coil such that a normalized flux Φ occurring in the at least one stator coil depends on the output power as Φ=α ·P +β·Ratio wherein P is the output power, α is a slope and β·Ratio is a y-intercept, wherein the y-intercept is scaled to value such that the optimal power output of the wind turbine at a given speed is lesser than a maximum power output that can be achieved at that speed for said value of the y-intercept.