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High Performance Control of AC Drives with Matlab / Simulink Models by Jaroslaw Guzinski, Atif Iqbal, Haitham Abu-Rub

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5.5 DTC of Induction Motor with Consideration of both Iron Losses and Magnetic Saturation

5.5.1 Induction Machine Model with Consideration of Iron Losses and Magnetic Saturation

Representations of iron losses and magnetic saturation in dynamic space vector equivalent circuit of induction machines in an arbitrary frame of reference rotating at angular speed img are shown in Figure 5.65.

Figure 5.65 Space vector dynamic equivalent circuit of induction machine in an arbitrary reference frame [23]

img

Differential equations of the machine model are [23]

(5.38) equation

(5.39) equation

(5.40) equation

(5.41) equation

(5.42) equation

(5.43) equation

The equivalent iron loss resistance as a function of stator frequency is [23]

(5.44)

The equivalent magnetizing ...

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