Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart Planning, IMDC-SDSP 2020, Cyperspace, 28-30 June 2020

Research Article

An Accurate Determination of Induction Machine Equivalent Circuit Components

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  • @INPROCEEDINGS{10.4108/eai.28-6-2020.2297941,
        author={Bilal  Nasir},
        title={An Accurate Determination of Induction Machine Equivalent Circuit Components},
        proceedings={Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart Planning, IMDC-SDSP 2020, Cyperspace, 28-30 June 2020},
        publisher={EAI},
        proceedings_a={IMDC-SDSP},
        year={2020},
        month={9},
        keywords={induction machines; equivalent circuit; iron core loss; stray load loss; friction and windage loss; skew factor; temperature factor;},
        doi={10.4108/eai.28-6-2020.2297941}
    }
    
  • Bilal Nasir
    Year: 2020
    An Accurate Determination of Induction Machine Equivalent Circuit Components
    IMDC-SDSP
    EAI
    DOI: 10.4108/eai.28-6-2020.2297941
Bilal Nasir1,*
  • 1: Northern Technical University, Hawijah Technical Institute, Iraq
*Contact email: bilal_alnasir1958@yahoo.co.uk

Abstract

This paper is to propose a procedure for the determination of complete components of the induction machine equivalent circuit at various operating conditions, considering the effect of skin and temperature on the stator winding, rotor winding, and iron core losses calculations. Also, the variation of temperature on speed (slip), the variation of speed on mechanical (friction and windage) losses, magnetizing saturation effect, slip effect on the iron core losses and skew effect on the machine parameters are considered. Besides these parameters effect, the method of equivalent circuit parameters determination requires measurements of supply voltage per phase, stator current per phase from no-load to full-load points, stator D.C. resistance per phase at ambient temperature, no-load test at different supply voltages from 125% down to 25% and a locked-rotor test at a variable frequency from 100% down to 10% of rated. In this method, the air-gap magnetizing voltage, the machine power factor, the stator iron core resistance, the rotor iron core resistance, the stator stray loss resistance, and rotor stray loss resistance are accurately determined to achieve excellent accuracy using this proposed methodology.