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Thanks for reply.
I use standard generator with 4 poles. When wind speed increases from cut-in wind speed to rated wind speed (let say 4 to 10 m/s), the rotation of the generator will be increased as well. So, it's meant during the changing of wind speed from one wind speed to another, torque of the aerodynamic also increasing. To operate in adjustable speed, we need to increase the generator (rotor) speed so that the generator torque can be aligned with the aerodynamic torque. This can be achieved by changing the synchronous speed so that the torque can be matched when frequency(rotor speed) is increasing at another speed. At high wind speed, let say 10m/s, the generator speed will over the base speed where the synchronous speed will also be higher than the base speed. But, from text book, if we use V/f constant ratio concept, we need to fix the voltage if the frequency is greater than the base speed. this make me confuse thanks for any feedback.
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