ET2105 Electrical Power System Essentials

1
The Utilization of Electric Energy

• ET2105 Electrical Power System Essentials

Prof. Lou van der Sluis
2
Introduction (1)

• Electricity the energy carrier of the future
• A variety of conversions
• Into mechanical energy
• Into light
• Into heat
• DC electrical energy
• Chemical energy

3
Introduction (2)
Daily load curve in the Netherlands
(Monday May 15, 2006)
4
The Synchronous Motor (1)
Magnetic field generated by a three-phase coil
system
5
The Synchronous Motor (2)
Synchronous motor connected to an infinite bus
6
The Induction Motor (1)
Three-phase induction motor supplied by a
single-phase source
7
The Induction Motor (2)
The electromagnetic torque as a function of the
angular rotor speed
8
Light

• The incandescent lamp
• The halogen lamp
• The fluorescent lamp (Tube Light or TL)
• The light-emitting diode (LED)

9
Heat

• Boiler
• Water cooker
• Electric stove
• Aluminum and steel furnaces

10
Direct Current (1)
Single-phase full-wave rectifier
Single-phase full-wave rectifier during the
positive (a) and the negative (b) half cycle of
Vin
11
Direct Current (2)
Single-phase rectification
Single-phase half-wave (a) and full-wave (b)
rectification
12
Residential load
Wiring lay out of four houses or buildings
connected to a three-phase supply
13
Electric Railways (1)
Courtesy of TenneT TSO B.V.
14
Electric Railways (2)
Supply principle of a DC railway system
15
Electric Railways (3)
Supply principle of an AC railway system