Question

A 3-phase full converter delivers a ripple free load current of 10 a with a firing angle delay of 45°. The input voltage is 3-phase, 400 v, 50 hz. Find the value of 2nd harmonic source current amplitude.

Answer 1

Three- phase AC Regulators

There are many types of circuits used for the three-phase ac regulators (ac to ac voltage converters), unlike single-phase ones. The three-phase loads (balanced) are connected in star or delta. Two thyristors connected back to back, or a triac, is used for each phase in most of the circuits as described. Two circuits are first taken up, both with balanced resistive (R) load