70220123 (Modern Power Electronics: Principle & Applications)

Course Name: Modern Power Electronics: Principle & Applications

Course Number: 70220123

Program: Graduate program

Type: Elective

Credits: 3

Term Offered: Fall

Prerequisite(s): Electrical Machinery, Fundamental of Power Electronics, Electrical Drives of Motor, Principle of Automatic Control

Instructor(s): Yongdong LiModern Power Electronics: Principle & Its Applications


Yongdong Li, Modern Power Electronics: Principle & Its Applications, 2005.


Y.Li, X.Xiao, High Power Multilevel Converter, China Sci. 2005

B.K.Bose, Modern Power Electronics and AC Drives. Prentice Hall, 2002

T. Lipo, Novotny, Dynamics and Control of AC Machines, Springer, 2000.

Peter Vas, Sensorless Vector and Direct Torque Control, Oxford Sci. 1998.

W. Leonhard, Control of Electrical Drives, Springer, 1994.


Course Description:

     The course is about modern power electronics(PE) technology which is an energy processing technology by using power semiconductor devices and circuits to convert, control and efficiently use electrical power. This technology is widely used in electric drive, power systems and a variety of power supplies in industrial and civilian sectors, improving greatly the efficiency of electricity generation, transmission and utilization, while reducing the volume and weight of the equipments. In addition, the power quality control and development of high technologies, electrical equipment, automation and control, depend largely on the modern power electronic technology.


Course Objectives and Outcomes:

1.Students could master the modern power electronic circuits and systems theory, analysis and design methods.[1,3]

2.Students could get familiar with the process of scientific research in power electronic field and presentation of their work. [4,5]

3.Students could use the theory, analysis and design methods to solve problems in power supply and electrical drives. [5, 11]



Course Topics:

1. Switching characteristics of PE devices including IGBT and IGCT, and principle of duality. How to get the duality of the switches are also introduced.

2. Typical topologies of power electronics and the basic topology cells, which can be applied to form new topologies, are presented. The optimization of power electronics topologies is also discussed.

3. Power electronic converter circuit theory and analysis. The method of phase plane method is introduced, used in different types of commutation circuits .

4. Resonant converters and soft-switching technology including the zero-current and zero-voltage quasi-resonant circuit. Zero-voltage and zero-current transition (ZVT and ZCT) soft-switching technology are also introduced.

5. Reactive power compensation, active power filter and power factor correction (PFC) technology.

6. Power Electronics in electric drive applications - High performance AC motor control system, including the induction motor vector control and direct torque control theory. Speed sensor-less control theory is briefly introduced.

7. Power electronic systems simulation and digital control.


Experiment(s): 2 experiments on PFC and ZVT

Project(s): A in-class presentation of survey on cutting-edge of Power Electronics.

Course Assessment:

     2 experiments, 5 points.       

     4 home works, 10 points.

A in-class presentation to survey the cutting-edge of PEs. 20 points.

     Final term examination. 65 points.