An algorithm for optimum design of three phase core type distribution transformer

الملخص EN

The field of transformer design remains a very active field for researchers because of the large practical applications of transformers not only in Ac bulk power transmission and distribution but also in modern power converters.

This research presents an algorithm, which design an optimum core type transformer.

The proposed algorithm varies the dimensions of the window of the core by varying window height to window width ratio.

For each ratio the program give a complete design and calculates the performance criteria.

The algorithm adopts four vital criteria for evaluating each design.

The optimum design is selected by compromising between these four criteria.

The algorithm was tested with distribution transformers from the Iraqi distribution power system by selecting standard KVA and turn ratio used in this system.

The result obtained suggests that the given design has a very high efficiency, an acceptable no load to full load current ratio, a copper to core loss ratio within the specified standard and a reasonable weight.

From the results obtained its concluded that all optimum designs are achieved with relatively low window height / width ratio.