What does VVVF stands for in VVVF drive ?
How does it differ from VVF drive?
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Answer Posted / phani
vvvf drive means variable voltage variable frq drives.
main reason for drive use is speed variation and control
the staring inrush current,in SQ induction motors
n=120f/p.if not change the f how can change the
speed .because p are constant .
vvf means variable voltage frq drives
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