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Use of transverse-flux machines in a free-piston generator
KTH, Skolan för elektro- och systemteknik (EES).
KTH, Skolan för elektro- och systemteknik (EES), Elektriska maskiner och effektelektronik.
KTH, Tidigare Institutioner, Elektrotekniska system.
2004 (engelsk)Inngår i: IEEE transactions on industry applications, ISSN 0093-9994, E-ISSN 1939-9367, Vol. 40, nr 4, s. 1092-1100Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This paper investigates the use of transverse-flux machines (TFMs) in a free-piston generator, an integration of a combustion engine and a linear electrical machine. For hybrid vehicles (the intended application), this integrated device has benefits in efficiency, emissions, reliability, etc. Conventional TFMs are dimensioned and their shortcomings illustrated. Several surface-mounted TFM designs are suggested. These designs, initially believed to be promising, are later discovered to be. poor during the three-dimensional finite-element method (3-D FEM) analysis. These designs suffered from a large axial pole-to-pole armature-flux leakage in the stator. This problem is solved in the proposed buried-magnets TFM variants, for which patents have been filed as well. A 5-kW proof-of-concept prototype of one such design is dimensioned that allowed the near fulfilment of 3-D FEM verifiable system demands. One phase. of this dimensioned three-phase prototype is built. Measurements on this,prototype showed that the use of short pole lengths in the machine had led to manufacturing defects. Nevertheless, the electromagnetic viability of the design could still be approximately verified.

sted, utgiver, år, opplag, sider
2004. Vol. 40, nr 4, s. 1092-1100
Emneord [en]
free-piston generators, linear machines, low leakage, transverse-flux machines (TFMS)
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-23582DOI: 10.1109/TIA.2004.830791ISI: 000222725500023Scopus ID: 2-s2.0-3242885596OAI: oai:DiVA.org:kth-23582DiVA, id: diva2:342281
Merknad
QC 20100525 QC 20111018. IEEE International Electric Machines and Drives Conference. Madison, WI. JUN 01-04, 2003 Tilgjengelig fra: 2010-08-10 Laget: 2010-08-10 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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