Question: A three phase fully controlled converter supplies a 1 5 0 V , 1 5 0 0 RPM , 5 0 A separately excited dc

A three phase fully controlled converter supplies a

150

, 1500

RPM

, 50

A separately excited dc motor. Input to rectifier is

230

(

rms value of line voltage

), 3

phase,

50

Hz supply. The motor is operating under rated conditions. Calculate the firing angle? Assume continuous conduction and neglect the armature resistance.

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