21 April 2023

DelftUniversity ofTechnology

Electrical Power System Essentials

ET2105 Electrical Power System Essentials

Prof. Lou van der Sluis

The Utilization of Electric Energy

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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

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Electrical Power System Essentials ET2105

Introduction (2)Daily load curve in the Netherlands

(Monday May 15, 2006)

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Electrical Power System Essentials ET2105

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

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Electrical Power System Essentials ET2105

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

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Electrical Power System Essentials ET2105

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

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Electrical Power System Essentials ET2105

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

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Electrical Power System Essentials ET2105

Light

• The incandescent lamp

• The halogen lamp

• The fluorescent lamp (Tube Light or TL)

• The light-emitting diode (LED)

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Electrical Power System Essentials ET2105

Heat

• Boiler

• Water cooker

• Electric stove

• Aluminum and steel furnaces

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Electrical Power System Essentials ET2105

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

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Electrical Power System Essentials ET2105

Direct Current (2)Single-phase rectification

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

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Electrical Power System Essentials ET2105

Residential load

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

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Electrical Power System Essentials ET2105

Electric Railways (1)

Courtesy of TenneT TSO B.V.

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Electrical Power System Essentials ET2105

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

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Electrical Power System Essentials ET2105

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