OPERATING MODES AND MATHEMATICAL DESCRIPTION OF POWER 3-WAY AUTOTRANSFORMERS

Three-winding power autotransformers are considered. It is shown that at present in the scientific and technical literature there are no mathematical models that allow a detailed qualitative and quantitative analysis of the physical processes occurring in them. The mode of operation at idle and the mode of operation under load of a power three-winding step-down and step-up autotransformer operating in a combined mode are considered and analyzed. The importance of isolating the components of self-induction and mutual induction is demonstrated when describing the operation of a power three-winding step-down and step-up autotransformer at idle and when operating under load in a combined mode. The obtained mathematical models clarify the existing ones, are universal, reflect the actual physical processes of the power three-winding step-down and step-up autotransformer.

Authors: A. G. Lavrov, A. S. Shlyapnikov

Direction: Electrical Engineering

Keywords: Three-winding power autotransformer, combined mode of operation, mathematical models, complete systems of equations, transformation ratios

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