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AC Drives and frequency inverters

Frequency Inverters and Variable Frequency Drives

Frequency inverters are used to control the speed of induction motors by varying the frequency of the motor supply voltage. Variable-frequency electric drive allows to control speed in a wide range, both during operation and acceleration/deceleration. Frequency inverters also protect the motor against overload, therefore the service life of electrical and mechanical parts of equipment increases. Usage of variable-frequency drive is economically sound in a variety of machines and can achieve up to 60 % of energy saving.