Effect of clamping stress on power loss in POWERCORE strip and Si-Fe transformer cores

Basak, A.; Moses, Anthony John; Al-Bir, R.

doi:10.1109/20.104597

Cited by 11 publications

(2 citation statements)

References 2 publications

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“…Recent work [59] has confirmed that stress must be overcome by using special building techniques, if the material is to be used without excessive loss and magnetising current. Because of its low POWERCORE" strip is a registered trademark of Allied Signal Inc., Metglas Products anisotropy, the flux uniformity is greater in cores assembled from amorphous material than in cores assembled from silicon iron [52], indicating that, if the stress problems can be overcome, transformer cores with low building factors can be assembled from them.…”

Section: Wmentioning

confidence: 93%

Electrical steels: past, present and future developments

Moses

1990

IEE Proceedings a (Physical Science, Measurement and Instrumentation, Management and Education)

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Electrical steels are the most important magnetic materials produced in Europe where the total sales market is around E400 million per annum. Its main use is as the magnetic core material of rotating machines and transformers. When magnetised in such equipment, it dissipates iron losses (as heat) which use up around 5% of all the energy generated in the UK. Over the past 20 years, the quality of electrical steels has improved vastly, because of improved manufacturing techniques and a better understanding of factors which control the magnetic properties. The paper reviews the development of electrical steels from hot-rolled silicon iron, first produced around 1905, through the discovery of grain-oriented steels in the late 1930s, to the modern domainrefined high-permeability materials and low-loss nonoriented steels. This is followed by a discussion of the most important factors which affect the properties of modern electrical steels. Amorphous magnetic materials are now competing in some of the markets traditionally monopolised by electrical steels. The paper reviews the existing status of amorphous materials compared to conventional electrical steels and concludes by considering how these and other competing materials might develop in the future.

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