چكيده به لاتين
With the development of industries and the increasing use of electric machines, including Axial Flux Permanent Magnet machines (AFPM), enhancing the performance of these types of machines has become essential. One of the new structures have introduced in recent years is the Ring Winding Axial Flux Permanent Magnet Machine (RWAFPM). However, RWAFPM has some challenges, such as the high torque ripple, which causes mechanical noise and vibration and depreciation of mechanical drivetrain. In this study, the effects of torque ripple reduction methods have been investigated. One of the most common methods of torque ripple mitigation is pole skewing. In this type of machine, the skew technique causes a significant drop in torque average. Hence, it is not an efficient way to resolve this problem. Therefore, some other methods, such as rotor shifting, magnet angle changing, and magnet grouping that are easy to implement, replaced with conventional skewing.it will be illustrated that Each of these methods individually had a positive influence on improving electromagnetic torque ripple. In the following, an optimal combination of the mentioned schemes are studied. In this regard, an objective function has defined taking the average torque, torque ripple, and volume of the magnet into account, and the Taguchi technique has been used as one of the Designs of Experiments methods, to find the optimum design. The performance of the machine under full load condition is studied via 3D-FEA in ANSYS Electronics Desktop software and is validated with experimental results.
