Three-phase, three-limb, steady-state transformer model

• Autor(a) principal: Oliveira, L. M. R.
• Data de Publicação: 2000
• Outros Autores: Cardoso, A. J. Marques
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10400.1/104
• topic: Máquinas eléctricas; 621.313; Transformers; Modelling and simulation; Coupled electromagnetic model; Park's vector approach

This paper presents the development and implementation of a digital simulation model of a threephase, three-leg, three-winding power transformer. The proposed model, implemented in MATLAB environment, is based on the simultaneous analysis of both magnetic and electric lumped-parameters equivalents circuits, and it is intended to study its adequacy to incorporate, at a later stage, the influences of the occurrence of windings interturn short-circuit faults. Both simulation and laboratory tests results, obtained so far, for a three-phase, 6 kVA transformer, demonstrate the adequacy of the model under normal operating conditions.