"medium voltage VFD"
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soniya paul
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22-06-2010, 12:06 AM

medium voltage VFD
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22-09-2010, 10:26 AM

More Info About "medium voltage VFD"

Variable-frequency drive
From Wikipedia, the free encyclopedia

Small variable frequency drive

A variable-frequency drive (VFD) is a system for controlling the rotational speed of an alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor.[1][2][3] A variable frequency drive is a specific type of adjustable-speed drive. Variable-frequency drives are also known as adjustable-frequency drives (AFD), variable-speed drives (VSD), AC drives, microdrives or inverter drives. Since the voltage is varied along with frequency, these are sometimes also called VVVF (variable voltage variable frequency) drives.

Variable-frequency drives are widely used. In ventilation systems for large buildings, variable-frequency motors on fans save energy by allowing the volume of air moved to match the system demand. They are also used on pumps, elevator, conveyor and machine tool drives.

refered by
Thinking To Register

01-05-2013, 12:18 AM

How do you differentiate between sine wave power and variable frequency power in real world?

what difference will it make if the motor recieves sine/variable freqency power?
study tips
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01-05-2013, 09:26 AM

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