Title :
Torque ripple reduction in double-layer 18/16 TC-PMSMs by adjusting teeth widths to minimize local saturation
Author :
Ponomarev, Pavel ; Petrov, I. ; Pyrhonen, Juha
Author_Institution :
Lab. of Electr. Drives Technol., Lappeenranta Univ. of Technol., Lappeenranta, Finland
Abstract :
The saturation in the stator teeth of an 18-slots 16-poles TC-PMSM with sinusoidal current supply caused by the interaction of armature reaction fluxes and rotor-PM-produced fluxes is studied. It is found that under load some teeth are saturated deeper than others. An increase in the width of these teeth reduces the oversaturation, which locally prevents the decrease in the inductance and back-EMF, and, consequently, reduces the torque ripple in the machine. The proposed technique can also be applied to other types of TC-PMSMs.
Keywords :
coils; electric potential; magnetic flux; permanent magnet machines; stators; synchronous machines; armature reaction flux interaction; back-EMF; double-layer 18-16 TC-PMSM; local saturation minimization; rotor-PM-produced flux; sinusoidal current supply; stator teeth saturation; teeth width adjustment; tooth-coil permanent magnet synchronous machine; torque ripple reduction; Harmonic analysis; Permeability; Rotors; Stators; Steel; Torque; Windings; Armature reaction; TC-PMSM; current linkage; permanent magnet machines; saturation; tooth-coil winding; torque ripple;
Conference_Titel :
Electrical Machines (ICEM), 2014 International Conference on
Conference_Location :
Berlin
DOI :
10.1109/ICELMACH.2014.6960374
