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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.

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.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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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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