Title
Three traction motors with different magnet materials — Influence on cost, losses, vehicle performance, energy use and environmental impact
Abstract
The aim of reducing both cost and environmental impact of automotive electric traction motors motivates the examination of motor performance when using magnets of varying strength and materials. Such investigations have attracted increasing interest in recent years. Given the same take-off torque capability, three motors are compared that have the same stator geometry but different magnet materials in the rotor; two PMSMs — one with Nd(Dy)FeB and one with SmCo magnets — and one PMaSynRM with strontium-ferrite magnets. To compensate the weaker magnets, their corresponding core stacks are prolonged. The resulting torque capability at high speed levels is lower for the SmCo PMSM and ferrite PMaSynRM compared to the Nd(Dy)FeB PMSM. The ferrite PMaSynRM has the poorest dynamic vehicle performance, but also the lowest energy losses over a wide range of drive cycles. In addition, the ferrite based motor option has the lowest environmental impact during manufacturing as well as the lowest material cost estimate. The SmCo motor has slightly lower losses than the Nd(Dy)FeB, but the highest material cost. Certainly, the result signals that further in-depth studies of the described PMaSynRM are of high relevance.
Year
DOI
Venue
2018
10.1109/EVER.2018.8362387
2018 Thirteenth International Conference on Ecological Vehicles and Renewable Energies (EVER)
Keywords
Field
DocType
electric machine,permanent magnet machines,magnet,magnetic materials,NdFeB,SmCo,Ferrite,FEM simulation,electrical vehicle,hybrid electrical vehicle,losses,energy consumption,efficiency,cost estimation,life cycle assessment
Ferrite (magnet),Automotive engineering,Torque,Traction motor,Electric machine,Magnet,Rotor (electric),Magnetic flux,Materials science,Automotive industry
Conference
ISBN
Citations 
PageRank 
978-1-5386-5967-0
0
0.34
References 
Authors
4
5
Name
Order
Citations
PageRank
Emma Arfa Grunditz130.85
Sonja Lundmark2474.85
mikael alatalo301.01
torbjorn thiringer4156.29
Anders Nordelof500.34