METHOD FOR THE TEMPERATURE DETERMINATION OF HIGH СURRENT CONTACTS SURFACE DURING THE SWITCHING PROCESS

Authors

  • O. G. Volkova Zaporozhye National Technical University, Ukraine

DOI:

https://doi.org/10.15588/1607-6761-2015-1-3

Keywords:

electrical contact, the temperature, the problem of heat conduction, the contact surface, switching

Abstract

The article describes the method of temperature determination of the electrical contact surface, which works without electrical arc in AC circuits. Pictures of contact surfaces damage are shown. It indicates that the temperature rises above the melting point of the contact material and there is disagreement in use of the temperature calculation methods. The temperature determination is based on the numerical solution of the boundary inverse heat conduction problem. The regularized solutions are done with the help of quasi-inversion method. The feature of the method is the temperature determination from the experimental temperature values obtained at points available for measurement. Calculation of the contact surface temperature as a function of time is obtained. The calculation is made using the program «MathCAD». The resulting temperature obtained by this method is more accurate than using previously known methods

Author Biography

O. G. Volkova, Zaporozhye National Technical University

Ph.D., Associate Professor

References

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How to Cite

Volkova, O. G. (2015). METHOD FOR THE TEMPERATURE DETERMINATION OF HIGH СURRENT CONTACTS SURFACE DURING THE SWITCHING PROCESS. Electrical Engineering and Power Engineering, (1), 17–20. https://doi.org/10.15588/1607-6761-2015-1-3