DocumentCode :
2719
Title :
A Contactless Slipring System Based on Axially Traveling Magnetic Field
Author :
Abdolkhani, Ali ; Hu, Aiguo Patrick
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Auckland, Auckland, New Zealand
Volume :
3
Issue :
1
fYear :
2015
fDate :
Mar-15
Firstpage :
280
Lastpage :
287
Abstract :
It is a preferable method to transfer power wirelessly using contactless slipring systems for rotary applications. The current single or multiple-unit single-phase systems often have limited power transfer capability, so they may not be able to meet the load requirements. This paper presents a contactless slipring system based on axially traveling magnetic field that can achieve a high output power level. A new index termed mutual inductance per pole is introduced to simplify the analysis of the mutually coupled poly-phase system to a single-phase basis. Both simulation and practical results have shown that the proposed system can transfer 2.7 times more power than a multiple-unit (six individual units) single-phase system with the same amount of ferrite and copper materials at higher power transfer efficiency. It has been found that the new system can achieve about 255.6 W of maximum power at 97% efficiency, compared to 68.4 W at 90% of a multiple-unit (six individual units) single-phase system.
Keywords :
inductive power transmission; magnetic fields; axially traveling magnetic field; contactless slipring system; efficiency 97 percent; mutual inductance per pole; power transfer; Coils; Contacts; Inductance; Magnetic fields; Magnetic flux; Power electronics; Shafts; Contactless slipring; magnetic design; poly-phase modeling; rotary applications; wireless power transfer;
fLanguage :
English
Journal_Title :
Emerging and Selected Topics in Power Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
2168-6777
Type :
jour
DOI :
10.1109/JESTPE.2014.2323363
Filename :
6814797
Link To Document :
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