کنفرانس بین المللی ماشین و محرکه های الکتریکی

صفحه اصلی / The 5th International Conference on Electrical Machines and Drives

Design and Parametric Analysis of a New Segmented Consequent-Pole Permanent Magnet Machine

نویسندگان :

Mohammadreza Naeimi¹ Amir Ebrahimi Shohani² Mohammad Farahzadi³ Fariba Farrokh⁴ Karim Abbaszadeh⁵ Johan Gyselinck⁶

1- Department of Electrical Engineering K. N. Toosi University of Technology Tehran, Iran 2- Department of Electrical Engineering K. N. Toosi University of Technology Tehran, Iran 3- Department of Electrical Engineering Electrical Engineering, University of Science and Culture Tehran, Iran 4- Department of Electrical Engineering Shahid Beheshti University Tehran, Iran 5- Department of Electrical Engineering K. N. Toosi University of Technology Tehran, Iran 6- Department of Electro and Mechanical Systems Université Libre de Bruxelles Brussels, Belgium

کلمات کلیدی :

Permanent Magnet،PM Utilization Ratio،Consequent-pole machine،Segmented structure،Parametric analysis

چکیده :

Consequent-pole permanent magnet (CPM) machines, renowned for their high permanent magnet (PM) utilization ratio, have increasingly found application in cost-sensitive domains. However, these machines exhibit asymmetrical air gap flux density and high torque ripple, which can impact their performance. This study presents a novel L-shaped segmented CPM (LS-CPM) machine, integrating the CPM motor's strengths and segmented structure to tackle the CPM machine problems. First, the study conducts a parametric analysis for each L-shaped rotor parameter to identify the optimal range to achieve minimum torque ripple and maximum average torque. For this purpose, the finite element method (FEM) is utilized to investigate the variation of the arc angle of the PM, iron pole, and barrier during the analysis. Then, A comparative study is employed to assess the torque characteristics, PM utilization ratio, no-load airgap flux density, and cogging torque of the proposed LS-CPM machine with optimal rotor parameters and the Segmented surface-mounted PM (S-SMPM) machine. Results reveal that the LS-CPM machine offers a comparable average torque despite consuming 49% less PM volume than the S-SMPM machine, leading to an 84.4% increase in PM utilization ratio. Furthermore, the LS-CPM machine has a torque ripple of 18.1%, while the S-SMPM machine delivers more torque ripple, which is 27.9%. In addition, based on the no-load airgap flux density results, the LS-CPM machine exhibits a more symmetrical distribution than the M-SMPM machine due to incorporating the segmented L-shaped structure and the CPM concept in the LS-CPM machine. Furthermore, the symmetrical airgap flux density distribution in the LS-CPM machine significantly reduces its peak-to-peak cogging torque from 7.17 N.m to 4.69 N.m.