This thesis presents the generic rules for permanent magnet synchronous machine (PMSM) with
tooth coil winding arrangement. The generic rules concentrates on minimized cogging torque and
torque ripple. The geometries considered in this thesis are two different tooth coil winding
arrangements and three different rotor types to formulate the design rules. The occurrence of
parasitic torque in the PMSM is classified from the origin of harmonic sources. The cogging
torque and torque ripple are derived analytically using the stator current sheet distribution
the rotor field distribution and the permeance functions. The detailed torque analysis are
performed in Finite Element Method (FEM) for different slot opening and magnet pole coverage.
The 2D harmonics analysis approach is used to predict the sources of the harmonics. The torque
is reconstructed from the selected harmonics combinations and are compared with the pulsating
torque obtained directly from the FEM. The harmonic sources of pulsating torque are also
validated with prototype for a geometry. The investigations on pulsating torque are extended to
other operating points such as field weakening and half load condition. Finally the generic
design rules are suggested for PMSM with tooth coil winding arrangement. In addition
simplified design rules to have quick design approach and design guidelines from manufacturing
point of view are suggested.
