Question

ANSWER ONLY IF YOU ARE 100% SURE OF THE ANSWERS. OTHERWISE PLEASE DONT ATTEND . I WARN YOU . A static kramer drive is used for the speed control of a 4-pole SRIM fed from a three phase , 415 V,50 Hz supply . The inverter is connected directly to the supply . If the motor is required to operate at 1200 rpm,find the firing advance angle of the inverter . Voltage across the open circuited rotor slip rings at stand still is 700 v and 1 v across volt .Allow a voltage drop of . diode and thrystor respectively .

Answer 1

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answer 70.83