Modelling an AC motor with high accuracy in a wide frequency range

This study presents a practical method to construct a high-frequency equivalent circuit model for AC motors in Spice-like simulation software. This model can be used to analyse the characteristics of the motor and predict the conducted electromagnetic noise in an adjustable speed drive system. The m...

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Bibliographic Details
Published in:IET electric power applications 2013-02, Vol.7 (2), p.116-122
Main Authors: Jia, Kelin, Bohlin, Georg, Enohnyaket, Mathias, Thottappillil, Rajeev
Format: Article
Language:English
Subjects:
A C motors
A.c. Machines
AC motor modelling
Adjustable
adjustable speed drive system
Applied sciences
common mode voltage
Computer simulation
conducted electromagnetic noise
current oscillation
Domain Responses
Drives
Electrical engineering. Electrical power engineering
Electrical machines
Exact sciences and technology
frequency 10 kHz to 10 MHz
Frequency ranges
high‐frequency equivalent circuit model
induction motor
induction motor drives
Mathematical models
Miscellaneous
Modelling
Modulation
motor characteristic analysis
motor winding
Motors
Parameters
power 200 kW
Regulation and control
Spice‐like simulation software
Transients
variable speed drives
vector fitting technique
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Summary:This study presents a practical method to construct a high-frequency equivalent circuit model for AC motors in Spice-like simulation software. This model can be used to analyse the characteristics of the motor and predict the conducted electromagnetic noise in an adjustable speed drive system. The modelling is based on measured data of the impedance and vector fitting technique. The procedure of the modelling is elaborated in this study and verified by comparing simulated data with experimental data on a 200 kW induction motor in the frequency range from 10 kHz to 10 MHz. This modelling method can be extended to model other types of motors irrespective of the power rating of the motors. Applications of the motor modelling to study common mode voltage in the system and current oscillation in motor winding are presented.
ISSN:1751-8660
1751-8679
1751-8679
DOI:10.1049/iet-epa.2012.0127