Theoretical and Experimental Investigation of Flex-PCB Air-Gap Windings in Slotless BLDC Machines
Authors:
- Bruno DehezBDBruno Dehez
- Francois BaudartFBFrancois Baudart
- Miroslav MarkovicMMMiroslav Markovic
- Yves PerriardYPYves Perriard
- 21 January 2014
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Industry Applications
- Vol. 50 (5) , 3153-3160
Abstract
Slotless brushless dc motors find more and more applications due to their high performance and their low production cost. This paper focuses on the windings inserted in the air gap of these motors and, in particular, to an original production technique that consists in printing them on a flexible printed circuit board. It theoretically shows that this technique, when coupled with an optimization of the winding shape, can improve the power density of about 23% compared with basic skewed and rhombic windings made of round wire. It also presents a first prototype of a winding realized using this technique and an experimental characterization aimed at identifying the importance and the origin of the differences between theory and practice.Keywords
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