Authorised by Academic Registrar, April 1996
Objectives The student will achieve an understanding of the issues involved in design and application of power electronic converter technology.
Synopsis Power semiconductor device theory. Thyristor firing circuits, control and trigger arrangements. Principles of phase control and zero voltage switching. AC voltage controllers, AC line commutated rectifiers and inverters. Forced-commutated converters. Half-controlled rectifiers and free-wheeling diodes. Effect of supply reactances, overlap. Output voltage and current relationships. Rectifier transformer connections, ratings and currents. Output power, input power and power factor. Harmonics. Protection of power electronic circuits from overvoltages and overcurrents. High-frequency switching power converters.
Assessment Examination (3 hours): 60% + Practical work, laboratory and project work: 40%