Torque Ripple Reduction of SynRM Using Machaon Type Lamination

Synchronous Reluctance Motors are becoming more popular due to their high performance characteristics. However, the most prominent problem of these motors is the torque ripple. There are a lot of studies in the literature to reduce the torque ripple of this type of motors. Machaon type rotor stands out as a good solution. This study presents the effects of Machaon rotor with different rotor layouts, having different d&q axis insulation ratios, on the average torque and torque ripple of a 2.2 kW SynRM. Firstly, different d&q axis insulation ratios and rotor slot pitch angles are applied to a classic rotor structure and results are presented. Most promising insulation ratios and rotor slot pitch angle combinations are then selected and combined into a single lamination, creating a Machaon rotor. The results are compared with the reference machine and classic rotor types on the basis of average torque and torque ripple.