Question

A three-phase 3 pulse converter is operated from a 3-phase, 230 v, 50 hz supply with load resistance r = 10 . Find the value of firing angle if an average output voltage of 50% of the maximum possible output voltage is required

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