Core lamination selection for distribution transformers based on sensitivity analysis

Olivares-Galvan, JC; Georgilakis, PS; Campero-Littlewood, E; Escarela-Perez, R

dc.contributor.author	Olivares-Galvan, JC	en
dc.contributor.author	Georgilakis, PS	en
dc.contributor.author	Campero-Littlewood, E	en
dc.contributor.author	Escarela-Perez, R	en
dc.date.accessioned	2014-03-01T11:46:40Z
dc.date.available	2014-03-01T11:46:40Z
dc.date.issued	2012	en
dc.identifier.issn	09487921	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/38017
dc.subject	Costing	en
dc.subject	Design engineering	en
dc.subject	Losses	en
dc.subject	Magnetic cores	en
dc.subject	Magnetic materials	en
dc.subject	Transformer	en
dc.subject	Transformer cores	en
dc.title	Core lamination selection for distribution transformers based on sensitivity analysis	en
heal.type	other	en
heal.identifier.primary	10.1007/s00202-012-0237-7	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s00202-012-0237-7	en
heal.publicationDate	2012	en
heal.abstract	In this paper, the sensitivity analysis is used to select the core lamination thickness of single-phase distribution transformers rated from 5 to 50 kVA. Three different magnetic materials (M2, M3 and M4) with thicknesses of 0.18, 0.23 and 0.27 mm are considered. Transformer designs are compared based on the total owning cost as well as on the transformer bid price. The impact of the different laminations on total owning cost and bid price is calculated for a total of 144 transformers (72 for each criterion). All transformers fulfill all the operating and construction constraints. The paper considers the impact on core losses of the space factor (core-assembling pressure) and of the building factor and also describes how core losses are affected by core design parameters such as the number of laminations per step, air gap and overlap. It is concluded that for the analyzed power range, M3 lamination is the best choice since all of the studied cases have smaller bid price and 79% of the studied cases have lower total owning cost. This paper gives guidelines to select the appropriate thickness and can help transformer manufacturers to select the optimal thickness for distribution transformers. © 2012 Springer-Verlag.	en
heal.journalName	Electrical Engineering	en
dc.identifier.doi	10.1007/s00202-012-0237-7	en
dc.identifier.spage	1	en
dc.identifier.epage	10	en