Lecture 1 Introduction.ppsx

INTRODUCTION TO
POWER ELECTRONICS
Dr. S. Anbarasi, Associate Professor /EEE
P.S.R Engineering College, Sivakasi

Content
Unit 1 - POWER SEMICONDUCTOR DEVICES
Unit 2 - AC TO DC CONVERTERS
Unit 3 - DC TO DC CONVERTERS
Unit 4 - DC TO AC CONVERTERS
Unit 5 - AC TO AC CONVERTERS & CONTROL CIRCUITS

Introduction to the course
Outline
What is power electronics?
Semiconductor
About this course
The history
Applications
Advantages and Disadvantages

What is power electronics?
1) Definition
Power Electronics is the electronics applied to conversion and control
of electric power.
Range of power scale :
milliwatts (mW) megawatts(MW) gigawatts (GW)
A more exact explanation:
The primary task of power electronics is to process and control the
flow of electric energy by supplying voltages and currents in a form
that is optimally suited for user loads.

Energy bands in Semiconductor
e- e- e-

Interdisciplinary nature
Electronics
Devices and Circuit
Power
Static and Rotating
Power equipment
Control
Continuous discrete
control
POWER
ELECTRONICS

Relation with multiple disciplines
Power electronics is currently the most active discipline in electric power
engineering.
Circuit
Theory
Systems &
control
Theory
Signal
Processing
Simulation &
Computing
Electronics
Solid state
physics
Electromagnetics
Power
Systems
Electric
machines
POWER
ELECTRONICS

Applications
Industrial applications
 Motor drives
 Electrolysis
 Electroplating
 Induction heating
 Welding
 Arc furnaces and ovens
 Lighting

Applications
Transportation applications
 Trains & locomotives
 Subways
 Trolley buses
 Magnetic levitation
 Electric vehicles
 Automotive electronics
 Ship power systems
 Aircraft power systems

Applications
Utility systems applications
 High- voltage dc transmission(HVDC)
 Flexible ac transmission(FACTS)
 Static var compensation & harmonics
 suppression: TCR, TSC, SVG, APF
 Custom power & power quality control
 Supplemental energy sources
 wind, photovoltaic, fuel cells
 Energy storage systems

Applications
Power supplies for electronic equipment
 Telecommunications
 Computers
 Office equipment
 Electronic instruments
 Portable or mobile electronics

Applications
Residential and home appliances
 Lighting
 Heating
 Air conditioning
 Refrigeration & freezers
 Cooking
 Cleaning
 Entertaining

Applications
Applications in space technology
 Spaceship power systems
 Satellite power systems
 Space vehicle power systems

Applications
Other applications
 Nuclear reactor control
 Power systems for particle accelerators
 Environmental engineering

Advantages of power electronics converter
Fast dynamic response due to static device
Low losses so high efficiency
Compact size and light weight
Increased operating life and reduced maintenance
Power electronic controllers are useful digital/ microprocessor
based control system. So increased flexibility in control.

Drawbacks of Power Electronics converter
Production of harmonics
In some Power electronic devices power factor is low
power factor correction is needed
For simple conversion equipment power electronic
devices are very costly
Low overload capacity

References
https://www.youtube.com/watch?v=gUmDVe6C-BU
Power Electronics: Circuits, Devices and Applications By M. Rashid, Prentice-Hall.
Power Electronics: Converters, Applications and Design By N. Mohan, T. Undeland, and W.
Robins, John-Wiley.
Slide share: Power Electronics Lecture 1 by Prof. Mohammed Zeki Khedher Department of
Electrical Engineering, University of Jordan

Lecture 1 Introduction.ppsx

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