Resumo

TORRES SUQUILANDA, Cristian Ivan  e  HERNANDEZ AREU, Orestes. Comparison of methods of calculation of leakage reactance in transformers of helicoid concentric windings. Energética [online]. 2019, vol.40, n.1, pp.42-52. ISSN 1815-5901.

In order to study the phenomena that originate during the operation of the transformers, using the existing tools of simulation with results of an acceptable accuracy, is necessary to obtain real data of the transformers and apply these in a suitable model for each phenomenon.Between these data, the reactances of transformers have great relevance.This paper presents and evaluates the two methods more generalized in the specialized literature of calculation of leakage reactance in transformers of helicoidal concentric windings and is proposed the adjusting of a method described by Kulkarni-Khaparde for its application in rectangular windings. It begins with a brief description of these methods and a discussion of them .The calculation of reactance by the described methods and the proposed variant is developed to a distribution transformer, comparing the theoretical results with the values obtained experimentally on the same transformer, and determining the relative error that yields each procedure with respect to the numerical value of the realized measurements.

Palavras-chave : inductance; leakage reactance; transformers.

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