Scientific and Technical Journal


ISSN Print 2221-3937
ISSN Online 2221-3805
The optimal values of technical and economic parameters of power transformers 63-630 kVA capacity at increase of working frequency level in the range of 50-500 Hz were defined. The optimal levels of working frequencies for the whole power range were defined. The design studies results were presented for example the power transformer TM400/10 with flat three core rod magnetic system made of electrical steel grade 3407, with a 0.35 mm thick and aluminum windings. The transformers economic efficiency composite index, total capitalization cost, used as the optimization criterion. The electrotechnical steel electromagnetic characteristics depending of the frequency determined by the refined method. Optimization studies implemented by the successive displacement method showed that the increase of the power transformers working frequency level to the optimum level can significantly improve their energy and resource efficiency.

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