DIKUL - logo
Knjižnica tehniških fakultet, Maribor (KTFMB)
  • Detecting saturation level in the iron core of a welding transformer in a resistance spot-welding system
    Deželak, Klemen ...
    This paper deals with saturation level detection in the iron core of a welding transformer (WT), which is a part of the resistance direct current spot-welding system. The saturation level in the iron ... core must be detected and controlled in order to utilize the iron core. This work evaluates four different methods appropriate for detecting the saturation level in the transformer's iron core. These methods actually detect the instant the iron core starts to become saturated and generate those signals used during control, in order to prevent saturation. In method I a flux linkage value is used to detect the saturation level. In method II the partial derivative of the flux linkage versus magnetomotive force characteristic is applied. Method III uses the ratio between the induced voltages measured by the probe coil wound around the iron core and the probe coil placed on the surface of the iron core. Method IV is similar to method III. The flux measurement with a surface mounted probe coil as applied in method III is replaced in method IV bz flux density measurement using a Hall sensor placed close to the iron core's surface. All the methods presented are evaluated by measurements performed on the iron core of an industrial 120 kVA spot WT.
    Vir: Journal of Magnetism and Magnetic Materials. - ISSN 0304-8853 (Vol. 320, iss. 20, Oct. 2008, str. e878-e883)
    Vrsta gradiva - članek, sestavni del
    Leto - 2008
    Jezik - angleški
    COBISS.SI-ID - 12358678
    DOI

vir: Journal of Magnetism and Magnetic Materials. - ISSN 0304-8853 (Vol. 320, iss. 20, Oct. 2008, str. e878-e883)

loading ...
loading ...
loading ...

Vnos na polico