what is difference between AC VVVF drive & Dc VVVF drive
explain their working principle?
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Answer Posted / rawat
In AC VVVF drive we control the motor by changing its
frequency through drive. But in case of Dc drive there is
armature voltage and field voltage which are controlled by
scr's.
So there is no frequeny in case of dc drive as here dc is
not changing into ac.
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