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How does a Variable Frequency Drive work?

April 26, 2017drive Frequency

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How does a Variable Frequency Drive work?

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A. Variable Frequency Drives are electronic devices that control the speed of the motor by controlling the frequency of the voltage supplied to the motor. The VFD converts three-phase 60 hertz AC voltage to AC voltage at a desired frequency. Controlling the frequency controls the motor speed, as the speed of an induction AC motor is proportional to the frequency of the voltage applied.