the utilization of electric energy

20 April 2023

DelftUniversity ofTechnology

Electrical Power System Essentials

ET2105 Electrical Power System Essentials

Prof. Lou van der Sluis

The Utilization of Electric Energy

24. The Utilization of Electric Energy | 15

Electrical Power System Essentials ET2105

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



Introduction (2)Daily load curve in the Netherlands

(Monday May 15, 2006)



The Synchronous Motor (1)Magnetic field generated by a three-phase coil system



The Synchronous Motor (2)Synchronous motor connected to an infinite bus



The Induction Motor (1)Three-phase induction motor supplied by a single-phase source



The Induction Motor (2)The electromagnetic torque as a function of the angular rotor speed



Light

• The incandescent lamp

• The halogen lamp

• The fluorescent lamp (Tube Light or TL)

• The light-emitting diode (LED)



Heat

• Boiler

• Water cooker

• Electric stove

• Aluminum and steel furnaces



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



Direct Current (2)Single-phase rectification

Single-phase half-wave (a) and full-wave (b) rectification



Residential load

Wiring lay out of four houses or buildings connected to a three-phase supply



Electric Railways (1)

Courtesy of TenneT TSO B.V.



Electric Railways (2)Supply principle of a DC railway system



Electric Railways (3)Supply principle of an AC railway system

the utilization of electric energy

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