Worlds of David Darling
Encyclopedia of Science
Home > Encyclopedia of Alternative Energy

adjustable speed drive

adjustable speed drive
TECO-Westinghouse FM50 adjustable speed drive
An electronic device that controls the rotational speed of motor-driven equipment such as fans, pumps, and compressors. By ensuring that the motor's speed is properly matched to the load placed on the motor, an adjustable speed drive helps save energy. Speed control is achieved by adjusting the frequency of the voltage applied to the motor.

Terms used to describe this category include polyphase motors, motor oversizing, and motor rewinding.

Related category