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Du-Bar, C. (2011) *Design of an axial flux machine for an in-wheel motor application*. Göteborg : Chalmers University of Technology

** BibTeX **

@mastersthesis{

Du-Bar2011,

author={Du-Bar, Christian},

title={Design of an axial flux machine for an in-wheel motor application},

abstract={This 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.},

publisher={Institutionen för energi och miljö, Elteknik, Chalmers tekniska högskola},

place={Göteborg},

year={2011},

}

** RefWorks **

RT Generic

SR Print

ID 151782

A1 Du-Bar, Christian

T1 Design of an axial flux machine for an in-wheel motor application

YR 2011

AB This 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.

PB Institutionen för energi och miljö, Elteknik, Chalmers tekniska högskola,

LA eng

OL 30