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Book synopsis

The dynamic modelling of induction machines involves the development of accurate and reliable models that can adequately account for the machine s non-linearities. The work presents the modelling of the Squirrel-cage rotor bar. To effectively account for Skin-effect in the rotor bar, a T-network lumped parameter model is developed. An optimisation algorithm which provides a good correlation between the actual bar impedance and the model impedance for varying frequency at approximately 6% error is achieved. MATLAB Programs are developed and used to solve the steady and transient mathematical models of the machine. A comparison between the predicted transient torque and speed in the conventional model and that with Skin or/and Saturation effects shows a remarkable difference. The simulated machine model with both skin-effect and saturation effect included gives a better result. The study also investigates the estimation of induction machine mean temperatures at different parts. It is observed that the computed mean temperatures of the machine parts at No-load, rated load and blocked rotor operations compare satisfactorily well with the measured temperatures.

Book details

• Full title: Modelling and computer simulation of induction machine
• Subtitle: Dynamic and thermal modelling of induction machine with non-linear effects
• Author: Ogbonnaya Inya Okoro
• Language: English
• Binding: Paperback
• Number of pages: 216
• EAN: 9783847324591
• ID: 07035706
• Publisher: LAP Lambert Academic Publishing
• Weight: 338 g
• Dimensions: 220 × 150 × 13 mm
• Published: 2012

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