Design of a delta wound core transformer with noise reduction

Abstract

Distributive transformers with traditional E-magnetic core are important sources of noise in urban substations and urban areas. Noise reduction is achieved by reducing magnetic induction, which also leads to dimension increase of magnetic core, and thus to an increase in material and price of transformers. This paper presents a method for calculation and design of new generation distributive transformers with delta wound core with improved functional characteristics, reduced losses and lower noise level than conventional distributive transformers. It also presents original production technology of delta wound core on the modified machine with special tools that enables the same machine to perform operations winding process. In addition to lower noise level, transformers with delta wound core have more advantages over other types of transformers and higher economical production that can be organized in small enterprises.