Semiconductor Power diodes, Power transistors, MOSFET, SCR Thyristor and its two transistor model, Triac, Gate turn off thyristor (GTO), Insulated gate bipolar transistor (IGBT), Comparison of switching power devices, Static Characteristics and Principles of operation, turn on and turn off characteristics, triggering circuits

Line commutated thyristor based converters, phase controlled rectifiers, bridge converters - fully controlled, half controlled, uncontrolled ( single phase and three phase configuration), bidirectional ac to dc voltage source converters, issues of line current harmonics, power factor, distortion factor and source inductance, Resonant Converters, inverter operation, applications in drives.

Thyristor choppers, voltage, current and load commutation, step up and step down Choppers, basic principles of DC-DC switch mode Converters, buck, boost and buck-boost converters and applications

DC-AC switched mode converters, Voltage source inverters, single phase and three phase inverter, harmonic reduction techniques and Sinusoidal Pulse Width Modulation, current source inverter.

Single phase and 3-phase AC voltage controllers using thyristors , phase control and integral cycle control, AC choppers, single phase cyclo-converters, applications, effects of harmonics and electromagnetic interference, applications in drives