Welcome to Power Electronics Course
ABB
Instructor
Dr. Kar 23 Old Drama Email:
[email protected] Office Hour: Thursdays, 10:00 am - 12:00 pm
Graduate Assistants Tomi Hila Essex Hall Email:
[email protected] Office Hour: -----Fatima Ghousia B20 Essex Hall Email:
[email protected] Office Hour: -----Anas labak B20 Essex Hall Email:
[email protected] Office Hour: ------
Texts Class Lectures: “Power Electronics” by Mohan, Undeland and Robins, 3rd Edition, 2003, John Wiley & Sons, Inc. Projects/Laboratory Experiments/Tutorials: “Power Electronics Lab Manual" by N. Kar (to be posted soon)
Class Location and Time
Room 186, EH Tuesdays & Thursdays 8:30 am - 9:50 am
Tutorials/Laboratory Experiments/Projects 1. Four tutorials
2. Three labs/mini projects. 3. Detailed instructions on lab/project report/format will be given at a later time.
Marking Scheme Attendance
(5%)
Midterm Exam No. 1
(20%)
Midterm Exam No. 2
(20%)
Final Examination
(45%)
Laboratory Experiments/Projects (10%)
Course Contents 1. Review of diodes, BJTs, MOSFETS, IGBTs, RLC circuits, etc. 2. Diode Rectifiers – to convert the input ac into dc in an uncontrolled manner
3. Thyristor Converters – to convert the input ac into dc in a controlled manner
4. DC-DC Switch-Mode Converters – – – – –
Step-down (buck) converter Step-up (boost) converter Step-down/step-up (buck-boost) converter Cuk converter Full-bridge converter
5. Switch-Mode DC-AC Inverters – ac motor drives – Uninterruptible ac power supplies – Where a sinusoidal ac output is required whose magnitude and frequency both have to be controlled
Course Contents (Cont’d) 6. Application of Power Electronic Systems – – – –
Battery Charging Renewable Energy from Wind Uninterruptible Power Supplies (UPSs) DC and Induction Motor Drives: • A motor drive consists of – An electric motor – A power electronic converter – And possibly a speed and/or position sensor • Applications – Servo motor drives in robotics – Variable-speed drive for adjusting flow rates in pumps
SET Forms Student Evaluation of Teaching forms will be administered during the last two weeks of the class.
Scope and Applications
Power Flow through Converters
o An ac/dc converter is shown here
o Converter is a general term o Converters: rectifier (ac – dc) and inverter (dc – ac) o Rectifier mode of operation when power from ac to dc o Inverter mode of operation when power from ac to dc
Power Processor as a Combination of Converters
• A converter is a basic module or building block of a power electronic system • Converters: rectifier (ac – dc) and inverter (dc – ac) • Energy storage elements (inductors and capacitors): decouple the input and the output sides
AC Motor Drives
• Converter 1 rectifies line-frequency ac into dc • Capacitor acts as a filter; stores energy; decouples • Converter 2 synthesizes low-frequency ac to motor
