XIX Sympozjum Srodowiskowe PTZE - materialy.pdf

H_zob
2. TFM geometry optimization
XIX Sympozjum PTZE, Worliny 2009
Kot_zob
Fig. 1. 3-D finite element model of transverse flux motor.
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D_mag
Kot_konc
In the process of TFM geometry optimization the main changeable geometric parameters are:
axial length of pole shoe (H_zob), pole-shoe width (Kot_zob) at the air gap side, thickness of
flux concentrator (Kot_konc) and permanent magnet radial height (D_mag). All other
geometric parameters of TFM are kept constant. The outer rotor radius and the overall length
of TFM are fixed at 180 mm and 100 mm, respectively. The parameters such as stator slot
dimensions of 14x12 mm 2 , stator yoke width of 7 mm, air-gap width of 0.5 mm, number of
pole pairs 30 and the 20 number of turns per phase are kept constant during optimization. The
values of these fixed parameters were established during stator material magnetic loading and
induced voltage analyze.
2.1 Taguchi Method and Application
To realize the optimization procedure based on variable parameters the Taguchi orthogonal
array L9(3 4 ) is used. The parameter variations are shown in Table 1 and they define DOE
design area.
Table 1. Variation of each parameter
Parameter Description Values [mm]
name_1 name_2 name_3
axial length of pole shoe H_zob [mm] 29 22 15
pole-shoe width Kot_zob [mech. deg.] 3.6 2.8 2.2
thickness of flux concentrator Kot_konc [mech. deg.] 2.5 3.45 4.4
magnet radial height D_mag [mm] 4 6 8