12
II.
The history
Application of fast-switching Invention of fully-controlled Thyristor semiconductor devices GTO GTR Mercury arc rectifier Power MOSFET Power diode Vacuum-tube rectifier Thyristor Thyristor Thyratron (microprocessor)
Other applications
14
Industrial applications
Motor drives
Electrolysis
Electroplating
Induction heating
Power
Welding Arc furnaces and ovens Lighting
15
Transportation applications
13
III. Applications
Industrial Transportation Utility systems
Power supplies for all kinds of electronic equipment
Power
Residential and home appliances
Space technology
Power electronics: to process electric power
Other classifications of electronics
Power
Electronics
Vacuum electronics: using vacuum devices, e.g, vacuum tubes devices Solid (Solid state) electronics: using solid state devices, e.g, semiconductor devices Physical electronics: physics,material,fabrication, and manufacturing of electronic devices Applied electronics: application of electronic devices to various areas 9
Feedback/ Feed forward
Controller
Reference
Power
-heating -power converter -other electric or electronic equipment
The task of power electronics has been recently extended to also ensuring the currents and power consumed by power converters and loads to meet the requirement of electric energy sourconverter AC to DC converter ( Fixed frequency : AC controller (Rectifier) Variable frequency: Cycloconverter or frequency converter)
Power
4
Conversion of electric power
Power input
Electric Power Converter
Power output
Other names for electric power converter:
-Power converter -Converter -Switching converter -Power electronic circuit -Power electronic converter Changeable properties in conversion Magnitude Frequency, magnitude, number of phases 5
Power
The objective of power electronics is exactly about how to use electric power, and how to use it effectively and efficiently, and how to improve the quality and utilization of electric power.
IGBT Power MOSFET Thyristor (DSP)
Power
1900
1957
mid 1970s
late 1980s
Pre-history
1st phase
2nd phase
3rd phase
The thread of the power electronics history precisely follows and matches the break-through and evolution of power electronic devices
Power electronics and information electronics make two poles of modern technology and human society—— information electronics is the brain,and power electronics is the muscle.
(commanding)
Control is invariably required. Power converter along with its controller including the corresponding measurement and interface circuits, is also called power electronic system.
Trains & locomotives
Subways
Trolley buses
Magnetic levitation
Power
Electric vehicles Automotive electronics Ship power systems Aircraft power systems
16
Utility systems applications
8
2) Relation with information electronics
A Classification of electronics by processing object
Information electronics: to process information
Electronics
DC
DC to DC converter (Chopper)
DC to AC converter (Inverter)
6
Power electronic system
Generic structure of a power electronic system
Power input
Power Converter
7
Typical power sources and loads for a power electronic system
Source
Power input
Vi ii
Power Converter
Power output
io Vo
Load
-Electric Motor -light
-Electric utility -battery -other electric energy source -power converter
Power
Power electronics
Electronics
Power systems Electromagnetics
Solid state physics
Power electronics is currently the most active discipline in electric power engineering worldwide.
Control input
Power output
Feedforward/Feedback
Power
Controller
Reference
Feedback/Feedforward ( measurements of output signals )
( measurements of input signals )
Power
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.
Chapter 1 Introduction
Outline
I. What is power electronics?
II. The history III. Applications
Power
IV. A simple example
V. About this course
2
I.
What is power electronics?