Calculation of Magnet Losses in Concentrated-Winding Permanent-Magnet Synchronous Machines Using a Computationally Efficient Finite-Element Method

The proposed hybrid method combines computationally efficient finite-element analysis (CE-FEA) with a new analytical formulation for eddy-current losses in the permanent magnets (PMs) of sine-wave current-regulated brushless synchronous motors. The CE-FEA only employs a reduced set of magnetostatic...

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Bibliographic Details
Published inIEEE transactions on industry applications Vol. 49; no. 6; pp. 2524 - 2532
Main Authors Peng Zhang, Sizov, Gennadi Y., Jiangbiao He, Ionel, Dan M., Demerdash, Nabeel A. O.
Format Journal Article
LanguageEnglish
Published IEEE 01.11.2013
Subjects
Brushless motors
Brushless permanent-magnet (BLPM) synchronous motor
finite-element analysis (FEA)
fractional-slot concentrated winding
Harmonic analysis
interior permanent-magnet (IPM) motor
magnet eddy-current losses
Magnetic domains
Permanent magnet motors
permanent-magnet (PM) machines
Rotors
Synchronous motors
Three-dimensional displays
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Summary:The proposed hybrid method combines computationally efficient finite-element analysis (CE-FEA) with a new analytical formulation for eddy-current losses in the permanent magnets (PMs) of sine-wave current-regulated brushless synchronous motors. The CE-FEA only employs a reduced set of magnetostatic solutions yielding substantial reductions in the computational time, as compared with the conventional FEA. The 3-D end effects and the effect of pulsewidth-modulation switching harmonics are incorporated in the analytical calculations. The algorithms are applied to two fractional-slot concentrated-winding interior PM motors with different circumferential and axial PM block segmentation arrangements. The method is validated against 2-D and 3-D time-stepping FEA.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2013.2264652