What is Torque Vector Control in VVVF Drives?
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Answer Posted / deepak g
In I.M, we generally consider the flux proportional to
torque and the slip prop. to speed in scalar control. Now
this is actually not valid for vector control. In vector
control we need to consider a dc drive analogy. i.e. the
torque is proportional to the armature current only and does
not affect flux (armature and field current which are
perpendicular to each other forming independent phasors ).So
by torque control i think it means controlling the real
component of the stator current which is formed after
resolving the stator current into quadrature and direct axis
currents.
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