Journal of Emerging Trends in Engineering and Applied Sciences: Research Areas

Abstract:
Distribution transformers are designed to have low core losses; therefore they are designed with low value of flux density for cold rolled grain oriented (CRGO) steel. Amorphous alloy is being seen as a good substitute of CRGO steel as it has very less core losses. In amorphous core transformers, manufacturers are adopting a square or rectangular section of core, for which cost of copper winding is more and radial electromagnetic forces are non-uniform. Here, amorphous core transformer with circular multi-stepped section of core is presented and compared with conventional CRGO core transformer and square-sectioned amorphous core transformer in terms of efficiency, cost and radial forces. An effort is being made to show that, circular multi stepped section of core is a better choice in place of square section of core, for amorphous core transformer. If a multi stepped section of core is adopted in place of square section for an amorphous core transformer, the efficiency improves, cost reduces and radial forces in windings become uniform.

Keywords: amorphous-core, CRGO steel, distribution transformer, transformer design, core losses

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