PE_Lectures(BSc)

Course (Catalog Description)

• This course provides the student with an introduction to the power electronics circuits including the characteristics of power semi-conductor devices, diode rectifiers, thyristors, commutation techniques, controlled rectifiers, ac voltage controllers, choppers, inverters, and introduction to renewable energy sources and motor drives.

Course Text

• Power Electronics: Circuits, Devices and Applications (3rd Edition) by M. H. Rashid, 2003.
• Power Electronics: Converters, Applications, and Design by Ned Mohan, 2002.
• First Course on Power Electronics and Drives by Ned Mohan, 2003.
• Electric Motors and Drives: Fundamentals, Types and Applications by Austin Hughes, 2006.

Course Objectives

• Introduce to students the theory and applications of power electronics systems for high efficiency, renewable and energy saving conversion systems.
• Prepare students to know the characteristics of different power electronics switches, drivers and selection of components for different applications
• Develop students with an understanding of the switching behavior and design of power electronics circuits such as DC/DC, AC/DC, DC/AC and AC/AC converters

Topics Covered

• Introduction to Power Electronics and its industrial applications
• Introduction to Power devices characterizes: difference between ideal switch and practical switch, switching power loss, Switch Parameters, Classification of PSD
• Thyristors Characteristics, SCR, GTO, and TRIAC. Thyristor Gate Characteristics, Switching Characteristics (Dynamic characteristics), How to read Thyristor Datasheet, Triac Applications
• AC-AC Converters: AC Choppers, AC Phase Control Choppers, AC Phase Control Configurations and applications
• Introduction to Rectifiers and their Performance Parameters: Performance parameters, Average, RMS, and form factor of the waveform, Rectification efficiency, Form Factor, Ripple Factor, Transformer Utilization Factor, Crest Factor, Harmonic Factor, Harmonics Reduction.
• AC-DC Uncontrolled Rectifier: review of Single-phase diode rectifiers, Bridge Rectifier with C filter, Comparison between diode and SCR rectifiers, single phase half-wave controlled rectifier with R RL and RLE loads, calculate extinction angle, RL-Load with Freewheeling Diode, Semi-Converter and bridge SCR rectifiers, operation of rectifier in CCM and DCM modes.
• DC-DC PWM Converters, Linear Conversion, Switching Conversion, Pulse Width Modulation, Step-Down Buck Chopper, Step-Up Boost Chopper, Buck-Boost Choppers. DC Choppers for Solar Cell Systems, Photovoltaic (PV) Cell Structure and Operation, Solar Cell Characteristics, MPPT, Buck and Boost Converters Design for PV system, Electric DC Motor Drives using DC choppers.
• Cycloconverters
• Classification of inverters, single and three phase current and voltage sources, square, Quasi-Square Wave Output and stepped waveforms, PWM inverters, harmonics analysis of inverter output voltages, Performance parameters, applications of PWM inverters in UPS and PV systems.

Lectures