A separately excited dc motor is required to be controlled, from a 3-phase supply, for its operation in the first quadrant only. The most preferred converter would be
(a) 3-phase fully controlled converter (b) 3-phase fully controlled converter with free wheel diode (c) 3-phase dual converter (d) 3-phase half wave converter
(a) 3-phase fully controlled converter (b) 3-phase fully controlled converter with free wheel diode (c) 3-phase dual converter (d) 3-phase half wave converter