EngineeringElectrical EngineeringCircuit TheoryPower ElectronicsRenewable Energy IntegrationMagnetic Circuit AnalysisThree-phase CircuitsEquivalent Circuit AnalysisEquivalent Circuit ModelingMagnetic Leakage InductanceMutual Inductance CalculationTransformer DesignTransformer TheoryWinding DesignWinding Losses
Numerous power electronic applications necessitate the use of multiwinding transformers. Transformers having n windings per phase have (n−1) <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> leakage inductances. Of these, n−1 are self inductances, the rest are mutuals. This paper presents an equivalent circuit for the multiwinding transformer and outlines a method of calculating the leakage inductances for a given transformer of specified winding structure and dimensions. Examples are presented illustrating the effect of winding arrangements on the leakage inductances.