engleski

Core-type transformer short-circuit voltage calculation using conformal mapping

This study describes a method for calculation of transformer short-circuit voltage using conformal mappings, which map the transformer longitudinal and transverse cross-section geometry to a unit disk where an analytical solution for magnetic flux density is obtained and then transformed back to the original domain. The short-circuit voltage is calculated by the integration of the magnetic energy of the leakage field in the windings and the space around windings, excluding the core. This method takes into account windings of different height, the fringing effect at the ends of the windings and any relative position of windings located on the same or different limbs. Also, it is possible to calculate the short-circuit voltage for multiple windings.

Short-circuit voltage, conformal mapping, Schwarz-Christoffel transformation

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