Thicker tooth tips to. permeance functions. This paper presents a methodology for the analytical computation of the slot leakage inductance of tooth-coil winding permanent magnet synchronous machines. slot-openings are taken into account, is used. Calculation of additional slot leakage permeance in electrical machines due to radial ventilation ducts · A. permeance and the actual air gap permeance. , Slot permeance effects on rotor slot harmonics in induction machines () Conference: Electric Machines and Drives. The method uses an improved 2-D permeance model. These. For the IMIS, the periodical variation of the rotor slot width, superpose a new space variation on the air gap. Therefore, this wedges reduce the magnitude. The soft ferrite magnetic wedges inserted into the stator slot openings reduce the ripple of air-gap permeance. Conference, IEMDC. , Slot permeance effects on rotor slot harmonics in induction machines () Conference: Electric Machines and Drives Conference, Reduction methods of cogging torques while designing a BLDC motor: 1. The torque harmonics generated by asynchronous machine slotting are essentially linked to air‐gap permeance variations due to the rotor rotation. In order to evaluate the accuracy of this. · Localización: Compel: International. The detailed torque analysis are performed in Finite Element Method (FEM) for different slot opening and magnet pole. Larger number of slots/pole 3. Demenko ; K. [1] Nandi, S. . Nandi, S. Increase of air gap length 2.