Abstract
This paper presents performance improvement of dual stator axial-flux spoke type permanent magnet vernier machine (DSAFST-PMVM), which has the capability to generate high torque at a lower speed due to magnetic gearing effect. Flux focusing effect is created by means of dual stator single rotor topology with spoke type permanent magnets. It is best suitable for high-performance industrial applications such as servo motors, robot arms, wind power, electric vehicles, and elevator applications. A PM shape is proposed in this paper which has notches in such a way that it produces discrete skew effect which reduces the cogging torque and torque ripples. Optimization of magnet shape is done to make the optimized model more competitive than the proposed and basic models. Main parameters such as back emf, cogging torque, torque ripples, electromagnetic torque, VTHD, airgap flux densities, flux density distribution, power factor, and power of the machine are compared among the basic model, proposed model, and optimized models. The comparative analysis is done by using the time stepped 3D finite element method.
Highlights
Investigations on permanent magnet machines at a massive scale have commenced with the evolution of permanent magnet material [1]
The dual stator axial flux spoke type permanent magnet vernier machine (DSAFST-PMVM) topology has been proven with high torque density and enhanced power factor related to conventional PMVM machines [21]
DSAFST-PMVM is analyzed and consider as a basic model, in the second section we proposed a new magnet shape and refer it as a proposed model, compare its performance with the basic model
Summary
Investigations on permanent magnet machines at a massive scale have commenced with the evolution of permanent magnet material [1]. The dual stator axial flux spoke type permanent magnet vernier machine (DSAFST-PMVM) topology has been proven with high torque density and enhanced power factor related to conventional PMVM machines [21]. E. ANALYSIS DSAFST-PMVM has high back emf at low speed of 300 rpm due vernier effect and required a smaller number of amperes turns as compared to conventional axial flux machines of the same size. In this machine stator and rotor is of 1.75 T out of material saturation which is up to the mark. PROPOSED NOTCHED SHAPE MAGNET Cogging torque is directly proportional to the square of the air gap flux and change in reluctance w.r.t rotor position.
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call