Conference proceedings paper

Impedance Behavioural Study of Silicon Steel Laminated Core Inductor

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Publication Details

Author list: Boniface C, Barendse P

Publisher: Institute of Electrical and Electronics Engineers ( IEEE )

Place: Cape Town, South Africa 29 – 31 January 2020

Publication year: 2020

Start page: 808

End page: 813

Total number of pages: 6

ISBN: 978-1-7281-4162-6


Impedance behavior of laminated core inductor is studied at different frequency. Winding parasitic parameters which increase with the operating frequency due to skin effect and proximity effect are considered. These parameters can be modelled with dc resistance, winding dielectric capacitance, and magnetic core loss. These parameters may be calculated from standard data sheet parameters of the copper conductor and laminated sheets. The windings of electrical machines such as transformers, rotating machines, have been studied by various researchers to determine its state of health during operation. Different methods have been employed such as Sweep Frequency Response Analysis (SFRA), Motor Current Signature Analysis (MCSA) etc., to determine its condition at different frequencies. SFRA can offer detailed insight into condition of the winding insulation by analyzing the impedance of the winding over its bandwidth, however it is limited to offline implementation due to the invasiveness of the technique. The purpose of this paper is to lay the foundation for further development of the technique towards online implementation using an inverter, by firstly considering the case of an inductor. This will allow for a better understanding of the bandwidth and impedance model (including parasitic parameters, associated with the device) before translating the model and implementation to a rotating electric machine. Therefore, this paper sets out to explore the impedance for a standard round conductor winding silicon steel, by also considering parasitic components.


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Last updated on 2021-28-05 at 19:26