Design of an axial flux machine for an in-wheel motor application

dc.contributor.authorDu-Bar, Christian
dc.contributor.departmentChalmers tekniska högskola / Institutionen för energi och miljösv
dc.contributor.departmentChalmers University of Technology / Department of Energy and Environmenten
dc.date.accessioned2019-07-03T12:43:59Z
dc.date.available2019-07-03T12:43:59Z
dc.date.issued2011
dc.description.abstractThis master thesis deals with the design of an axial flux machine for an inwheel motor application. Four double-sided axial flux machine topologies are compared to select the most suitable one for designing a high torque density machine that fits into a predefined geometry (diameter: 260 mm, length: 72.5 mm). The yokeless and segmented armature (YASA) topology is chosen, due to its very compact structure. The design is made by using analytic and 3D finite element analysis alternately. The geometry of the electromagnetic circuit is optimized to find the maximum rated torque (≈80 Nm) for proposed values of magnetic flux and current densities (1.7 T and 7 A/mm2). These densities are chosen with the intension of reaching a high utilization of both the copper and the iron in the machine, when their proportions are determined by the maximal product of electric and magnetic loading. When the geometry of the electromagnetic circuit is determined, it is held fixed. Possible different torque speed characteristics of the machine are then investigated, with respect to current and voltage limitations together with the turn selections of the windings. A final design is proposed and its theoretical characteristics are evaluated and presented. The power density, at 2400 rpm and 7 A/mm2, is calculated to 5.3W/cm3. Furthermore, some suggestions for future work and modifications are made.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/151782
dc.language.isoeng
dc.setspec.uppsokLifeEarthScience
dc.subjectElkraftteknik
dc.subjectEnergi
dc.subjectElectric power engineering
dc.subjectEnergy
dc.titleDesign of an axial flux machine for an in-wheel motor application
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
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