Flux distribution and power loss in the mitered overlap joint in power transformer cores
作者： M. Jones , A. Moses , J. Thompson
DOI: 10.1109/TMAG.1973.1067577
关键词: Wattmeter 、 Transformer 、 Geometry 、 Flux distribution 、 Flux 、 Physics 、 Nuclear magnetic resonance 、 Energy efficient transformer 、 Power loss
摘要: The design of the joints in a power transformer core has marked influence on efficiency as whole. Two experimental cores have been built such that lengths their 45° mitered overlaps could be varied from 0 to 2.0 cm. larger core, with 1.0 m limbs, was used for investigating flux and loss variations second, smaller study how results might affected by changes dimensions. For measured two ways range overlaps: first, using localized technique, then measuring total precision wattmeter. In both cases, minimum found when an overlap 0.5 length again found, but cm overlap. A change over 20% used, optimum independent density T 1.8 T. special distribution determined array search coils. enables qualitative explanation occurrence loss.
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sci-hub.se 参考文章(6)
N. F. Astbury, Industrial magnetic testing ,(1952)
P.C. Joslin, A.J. Moses, J.E. Thompson, Some aspects of effects of longitudinal and normal stress on power loss and flux distribution within a transformer core Proceedings of the Institution of Electrical Engineers. ,vol. 119, pp. 709- 716 ,(1972) , 10.1049/PIEE.1972.0149
H.W. Kerr, S. Palmer, Developments in the design of large power transformers Proceedings of the Institution of Electrical Engineers. ,vol. 111, pp. 823- 832 ,(1964) , 10.1049/PIEE.1964.0137
A.J. Gilbert, A method of measuring loss distribution in electrical machines Proceedings of the IEE Part A: Power Engineering. ,vol. 108, pp. 239- 244 ,(1961) , 10.1049/PI-A.1961.0050
F. Brailsford, V.R. Mazza, The alternating magnetic flux distribution in right-angled corners of transformer laminations. An experimental investigation Proceedings of the IEE Part A: Power Engineering. ,vol. 109, pp. 173- 180 ,(1962) , 10.1049/PI-A.1962.0091
A. Moses, B. Thomas, J. Thompson, Power loss and flux density distributions in the T-joint of a three phase transformer core IEEE Transactions on Magnetics. ,vol. 8, pp. 785- 790 ,(1972) , 10.1109/TMAG.1972.1067540