1. Welcome to Power Electronics Course
ABB

2. Instructor
Dr. Kar 23 Old Drama Office Hour: Thursdays, 10:00 am - 12:00 pm

3. Graduate Assistants
Tomi Hila Essex Hall Office Hour:
Fatima Ghousia B20 Essex Hall Office Hour:
Anas labak B20 Essex Hall Office Hour:

4. 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)

5. Class Location and Time
Room 186, EH Tuesdays & Thursdays
8:30 am - 9:50 am

6. Tutorials/Laboratory Experiments/Projects
Four tutorials
Three labs/mini projects.
Detailed instructions on lab/project report/format will be given at a later time.

7. Marking Scheme Attendance (5%) Midterm Exam No. 1 (20%)
Final Examination (45%)
Laboratory Experiments/Projects (10%)

8. Course Contents 2. Diode Rectifiers 3. Thyristor Converters
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

9. 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

10. SET Forms
Student Evaluation of Teaching forms will be administered during the last two weeks of the class.

11. Scope and Applications

12. Power Flow through Converters
An ac/dc converter is shown here
Converter is a general term
Converters: rectifier (ac – dc) and inverter (dc – ac)
Rectifier mode of operation when power from ac to dc
Inverter mode of operation when power from ac to dc

13. 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

14. 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