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Wind Turbine Motor
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Wind Turbine Motor.
Wind Turbine Motors are the backbone of a wind turbine, and is what gives them the ability to generate electricity. It converts the kinetic energy of the wind into mechanical energy by the rotating motor. This concept was first employed by windmills centuries ago.
Wind Turbine Motors in the present are quite different from the first windmills though. They are usually three-bladed and pointed into the wind by computer-controlled motors. These have high tip speeds of over 200 miles per hour, high efficiency, and low torque ripple, which contribute to good reliability.The blades are usually colored light gray to blend in with the clouds and range in length from 65 to 130 ft or more. The blades rotate at 10-22 revolutions per minute. At 22 rotations per minute the tip speed exceeds 300 ft per second. Some models operate at constant speed, but more energy can be collected by variable-speed turbines which use a solid-state power converter to interface to the transmission system. All turbines are equipped with shut-down features to avoid damage at high wind speeds.
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