Inductive reactance component model for high-voltage partial-core resonant transformers

A model for the inductive reactance components of an equivalent circuit for high-voltage partial-core resonant transformers is presented. The self and mutual inductances of the transformer windings are calculated using a two-dimensional linear magneto-static finite-element model. Provisions are made for axial-offset and centre-gap tuning. The model can also predict the secondary voltage at which core saturation occurs under resonant conditions. Its performance was verified against test results of three sample transformers.