Design and Analysis of Low-Speed High-Torque Permanent Magnet Synchronous Machines for Industrial Agitators

In this paper, the low-speed high-torque permanent magnet synchronous machines (LSHT-PMSMs) are designed for industrial agitators with low cogging torque and torque ripple. The design principles are analyzed and the models with different slot-pole combinations equipped with concentrated and distributed windings are presented to obtain high performance. With the aid of the finite element method (FEM), the electromagnetic performance is analyzed and compared. According to the results, the performance of the proposed machines is consistent with the design purpose. And the characteristics of different models are analyzed to help select the suitable models for practical applications.