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Unequal Teeth Widths for Torque Ripple Reduction in Permanent Magnet Synchronous Machines With Fractional-Slot Non-Overlapping Windings

Petrov, Ilya; Ponomarev, Pavel; Alexandrova, Yulia; Pyrhönen, Juha (2015)

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Unequal_Teeth_Widths_for_Torque_Ripple_fin.pdf (760.2Kb)
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Post-print / final draft

Petrov, Ilya
Ponomarev, Pavel
Alexandrova, Yulia
Pyrhönen, Juha
2015

1-9

Institute of Electrical and Electronics Engineers

This publication is protected by copyright. You may download, display and print it for Your own personal use. Commercial use is prohibited.
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Julkaisun pysyvä osoite on
http://urn.fi/URN:NBN:fi-fe201504237353

Tiivistelmä

Permanent magnet synchronous machines with
fractional-slot non-overlapping windings (FSPMSM), also known
as tooth-coil winding permanent magnet synchronous machines
(TCW PMSM), have been under intensive research during the
latest decade. There are many optimization routines explained
and implemented in the literature in order to improve the
characteristics of this machine type.
This paper introduces a new technique for torque ripple
minimization in TCW PMSM. The source of torque harmonics is
also described. The low order torque harmonics can be harmful
for a variety of applications, such as direct drive wind generators,
direct drive light vehicle electrical motors, and for some high
precision servo applications.
The reduction of the torque ripple harmonics with the lowest
orders (6th and 12th) is realized by machine geometry optimization
technique using finite element analysis (FEA). The presented
optimization technique includes the stator geometry adjustment
in TCW PMSMs with rotor surface permanent magnets and with
rotor embedded permanent magnets. Influence of the permanent
magnet skewing on the torque ripple reduction and cogging
torque elimination was also investigated. It was implemented
separately and together with the stator optimization technique.
As a result, the reduction of some torque ripple harmonics was
attained.

Lähdeviite

Ilya Petrov, Pavel Ponomarev, Yulia Alexandrova, Juha Pyrhönen. (2015) Unequal Teeth Widths for Torque Ripple Reduction in Permanent Magnet Synchronous Machines With Fractional-Slot Non-Overlapping Windings. IEEE Transactions on Magnetics, 01/2015; 51(2):1-9. DOI:10.1109/TMAG.2014.2355178 ·

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