کنفرانس بین المللی ماشین و محرکه های الکتریکی

صفحه اصلی / The 3rd International Conference on Electrical Machines and Drives

Performance Comparison of Different Methods of Torque Ripple Reduction for Permanent Magnet-assisted Synchronous Reluctance Motor

نویسندگان :

Amir Hosein Amiri¹ Seyed Ehsan Abdollahi² Saeed Hasanzadeh³

1- Electrical and Computer Engineering Department Babol Noshirvani University of Technology 2- Electrical and Computer Engineering Department Babol Noshirvani University of Technology 3- Electrical and Computer Engineering Department Qom University of Technology Qom, Iran

کلمات کلیدی :

synchronous reluctance،ferrite magnet،skewing،short pitch winding،rotor topology

چکیده :

In recent years, synchronous reluctance machines (SynRM) have been widely used in various industrial applications due to their high efficiency, fast dynamic response, robustness, and lower production costs, making them suitable for traction applications. However, their usage is limited due to their high torque ripple and low power factor. To improve the power factor Ferrite magnets are commonly used in their rotor (PM-assisted SynRM). Adding these Ferrite magnets increases the torque ripple as well. To enhance the torque ripple many different methods are proposed such as skewing, employing different winding configurations, and rotor topology modifications. Machine designers should select a suitable technique as each method has limitations. This paper is aimed at analyzing the effects of these three different methods on the performance of the machine. A four-pole 1.5 kw SynRM is designed and the magnets are inserted in the rotor barriers while keeping the insulation ratio constant then the performance of different methods is evaluated and compared. First, the rotor is skewed, and then a short-pitch winding is used for the stator. Finally, a new design for barrier ends is proposed, and their effect on the torque profile is independently evaluated. The simulations are done in FEM 2D and the results are evaluated and discussed.