1. Electromechanical Parameters of Wind Turbines Assume a 3 MW wind turbine with a rotor diameter of 110 m operates at its nominal speed. The tip speed ratio at the nominal point is 6.5, the gear ratio is 1:100, and the nominal wind speed is 12 m/s. a) Calculate the generator's rotational speed and torque at the rated operating point. Generator rotational speed: (rad/s) Generator torque: (Nm) Round the answer to one decimal place.

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1. Electromechanical Parameters of Wind Turbines
Assume a 3 MW wind turbine with a rotor diameter of 110 m operates at its
nominal speed. The tip speed ratio at the nominal point is 6.5, the gear ratio is
1:100, and the nominal wind speed is 12 m/s.
a) Calculate the generator's rotational speed and torque at the rated operating point.
Generator rotational speed: (rad/s)
Generator torque: (Nm)
Round the answer to one decimal place.
b) Calculate the current on the low voltage side of the grid-connected inverter (690
V) of the wind turbine when the inverter provides 500 kVAr of reactive power to
the grid. What is the power factor?
Apparent power: (kVA)
Round the answer to one decimal place.
Current: (A)
Round the answer to one decimal place.
Power factor:
Round the answer to three significant figures.
Transcribed Image Text:1. Electromechanical Parameters of Wind Turbines Assume a 3 MW wind turbine with a rotor diameter of 110 m operates at its nominal speed. The tip speed ratio at the nominal point is 6.5, the gear ratio is 1:100, and the nominal wind speed is 12 m/s. a) Calculate the generator's rotational speed and torque at the rated operating point. Generator rotational speed: (rad/s) Generator torque: (Nm) Round the answer to one decimal place. b) Calculate the current on the low voltage side of the grid-connected inverter (690 V) of the wind turbine when the inverter provides 500 kVAr of reactive power to the grid. What is the power factor? Apparent power: (kVA) Round the answer to one decimal place. Current: (A) Round the answer to one decimal place. Power factor: Round the answer to three significant figures.
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