Single and three phase AC voltage controllers for different types of loads. Introduction to induction motor speed control and static VAR control. DC to DC converters: linear voltage regulation, design consideration for buck, boost and cuk converters, modes of operation, effect of ripples, single, two and four-quadrant operation of DC motor speed control, design of buck-boost circuit for PV panels. Single phase and three phase inverters: square wave inverter, Fourier analysis and THD calculation, single phase and three phase multilevel inverter, bipolar and unipolar PWM technique, voltage control through pulse amplitude and PWM techniques, three phase PWM inverter and induction motor application. Circuit analysis software such as PSIM, PROTEUS or MATLAB. Pre-req.: POWE 433.