Permanent magnet motors have the advantages of high output torque, efficiency, and low noise, but cogging effect is obvious. The 24-slot 4-pole surface-mounted permanent synchronous motor taken as an example to reduce torque motors. Firstly, generation mechanism analysed based on energy method, pole arc coefficient, air gap length, magnetic eccentricity, thickness, slot opening width are determ...

This paper presents an improved micro-step voltage-fed actuator for an automobile active grill shutter (AGS) system. A novel structured stepper motor, which contains both the main and auxiliary teeth in the stator, is proposed for the actuator. In a normal permanent magnet (PM) motor coils are generally wound on all the stator teeth, however, in the proposed motor, the winding is only on the ma...

This paper deals with electromagnetic design and 2-D (two-dimensional) magnetic field analysis of novel low force ripple linear switched reluctance (LSR) motor. The configuration that has been presented here has a higher number of rotor poles than stator poles, and the purpose of this configuration is to improve the force ripple, which is the weak point of LSRMs. In order to illustrate the ...