EE 442 POWER ELECTRONICS I Introduction Dr. Said A. Deraz

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Presentation transcript:

EE 442 POWER ELECTRONICS I Introduction Dr. Said A. Deraz Assistant Professor Electrical Engineering Department Faculty of Engineering, King Abdulaziz University sderaz@kau.edu.sa saidderaz@yahoo.com

What is power electronics? Power Electronics is the application of solid-state electronics for the control and conversion of electric power. It converts electric energy of the supply into voltage or current suitable for the load. Basic structure of power Electronics system

Power electronics devices

Types of power converters In brief, power electronics combines power, electronics and control. It employs electronic devices in circuit theory to achieve an efficient conversion of electric energy as well as the control and conditioning of electric power

Operating range of power semiconductor devices

Applications of power electronics

Advantages and disadvantages of power electronics Higher efficiency Long life Small size and low weight Fast response Disadvantages Produce harmonics in the supply system & controlled system Interference with communication system Produce low power factor at low voltage