Basic principles of power electronics; and power electronic semiconductor devices. Calculation of losses in power semiconductor devices; (conduction loss, switching loss). Heat sink design. Design of snubber circuits. Gate drive circuits and isolation. Single phase AC choppers. Rectifiers. Single phase uncontrolled (diode) bridge rectifiers. Smoothing methods. Power factor. Single phase controlled (thyristor) bridge rectifiers. Analysis of three phase half-bridge uncontrolled(diode) / controlled (Thyristor) rectifiers. Freewheeling operation. Three phase full-bridge uncontrolled (diode) rectifiers. Characteristics of line current. Three phase full-bridge controlled (Thyristor) rectifiers. Switch mode power supplies; Flyback converter, Buck converter, Boost converter. Single Phase Inverter. Voltage and frequency control methods for the single-phase inverter: Quasi-square wave and PWM techniques. Analyze of the single phase inverter. Harmonic analysis. Modulation index, frequency ratio. PWM generation.