Syllabus Power Electronics - (EE3591) UNIT I SWITCHING POWER SUPPLIES MOSFET dynamic behaviour - driver and snubber circuits - low power high switching frequency switching Power supplies, buck, boost, buck-boost converters - Isolated topologies - resonant converters - switching loss calculations and thermal design. (Chapter - 1) UNIT II INVERTERS IGBT : Static and dynamic behaviour - single phase half bridge and full bridge inverters - VSI : (1 phase and three phase inverters square wave operation) - Voltage control of inverters single, multi pulse, sinusoidal, space vector modulation techniques - various harmonic elimination techniques-CSI. (Chapter - 2) UNIT III UNCONTROLLED RECTIFIERS Power Diode - half wave rectifier - mid-point secondary transformer based full wave rectifier - bridge rectifier - voltage doubler circuit - distortion factor - capacitor filter for low power rectifiers - LC filters - Concern for power quality - three phase diode bridge. (Chapter - 3) UNIT IV CONTROLLED RECTIFIERS SCR - Two transistor analogy based turn - ON - turn ON losses - thermal protection - controlled converters (1 pulse, 2 pulse, 3 pulse, 6 pulse) - displacement factor - ripple and harmonic factor - power factor mitigation, performance parameters - effect of source inductance - inverter angle limit. (Chapter - 4) UNIT V AC PHASE CONTROLLERS TRIAC triggering concept with positive and negative gate pulse triggering, TRIAC based phase controllers - various configurations for SCR based single and three phase controllers. (Chapter - 5)
