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Principle of an Inverter

Infeed

(Rectifier)

DC

link

Power module

(Inverter)

Three-phase mains system

such as 3 AC, 400V, 50 Hz

Induction

motor

Inverter

Variable

speed

Voltage

U

Voltage

U

Voltage

U

t t t

SITRAIN

TIA-PRO1 / Introduction TIA Portal Page 34 Siemens AG © 2011

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