4, when the PMs are placed at the equal angle on rotor surface without the pole shifting, the maximum peak to peak value of the cogging torque has been measured about 0.
As a function of the angle rotation of the rotor with the pole shifting, the cogging torque values of the PMSG are also given in Fig.
As a function of the angle rotation of the rotor without and with the pole shifting, the cogging torque values of the PMSG are comparatively given in Fig.
Further we will consider possibilities to reduce pulsations of cogging torque by skewing of stator slots, if slot opening width is equal to interpolar distance ([b.
z2] does not exist, the flux through the stator tooth increases, value of maximal cogging torque increases also, so you should choose magnet width equal to rotor teeth width.