Design and Torque Analysis of Double-Slot Surface and Spoke-Type BLDC Motor Using Finite Element Method

Subject Areas : Renewable energy

Ali Esteki ¹ , Behrooz Majidi ²

1 - Department of Electrical Engineering- Najafabad Branch, Islamic Azad University, Najafabad, Iran
2 - Smart Microgrid Research Center- Najafabad Branch, Islamic Azad University, Najafabad, Iran

Received: 2021-10-27 Accepted : 2022-03-15 Published : 2023-11-22

Keywords: Finite Element Method, torque, Double-Slot Stator, Surface and Spoke-type, brushless direct current,

Abstract :

The aim of this paper is to investigate the impact of second slot in stator tooth on performance of two commonly used rotor structures, namely Surface-type and Spoke-type, for a brushless direct current (BLDC) motor. The comparative results are reported for different closing slot conditions. Afterwards by inserting a direct current driven winding or permanent magnets (PMs) into the stator tooth slots of best performed model of previous stage, two hybrid-brushless direct current (HBLDC) motors are introduced and studied. The results demonstrated that slot-closing strategy has high impact on torque fluctuations while the torque produced remain almost constant. For HBLDC, the auxiliary Electro-Magnetic field, placed in stator slot, developed torque performance of the motors. The finite element method (FEM) is used in stages of study.

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