Answer Posted / c_elavarasi@yahoo.com
An Electrical substitute for coconut climber,Design of
STATCOM for power factor improvement,contigency analysis of
power system,A three phase cascaded multi level invereter
for Induction motor,power Quality Enhancement using custom
power device
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I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.