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What is VFD, and how its work

Answer Posted / venkat iyer

VFD is known as Variable Frequency Drive, and is used in AC Electrical System for varying the speed of a 3 phase squirrel cage induction motor, by varying the output frequency of the drive. The AC voltage is initially converted into DC and the energy / POWER is stored in capacitors which is later inverted through IGBT (insulated gate bypolar transistor)

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