Improved Coupling Design of Contactless Slipring for Rotary Applications
Contactless sliprings based on inductive power transfer (IPT) are a preferable alternative to mechanical sliding contacts for power transfer in rotary applications. However, existing contactless sliprings suffer from low-magnetic coupling coefficient k, which results in limited power transfer capabi...
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Veröffentlicht in: | IEEE journal of emerging and selected topics in power electronics 2015-03, Vol.3 (1), p.288-295 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Contactless sliprings based on inductive power transfer (IPT) are a preferable alternative to mechanical sliding contacts for power transfer in rotary applications. However, existing contactless sliprings suffer from low-magnetic coupling coefficient k, which results in limited power transfer capability. This paper presents an improved coupling design method of IPT-based contactless slipring systems to increase the coupling coefficient within the same physical size of the existing system with U, E, and pot-core geometry configurations. It has been found from the finite element method study that k increases about 21.3%, 45%, and 20% for UU, EE, and pot-core arrangements, respectively, within the defined dimensions. The proposed EE and pot-core coupling arrangement have been verified by experiments and it has been shown that k is increased about 33% for EE and about 22% for pot-core arrangements. |
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ISSN: | 2168-6777 2168-6785 |
DOI: | 10.1109/JESTPE.2014.2336895 |