Three traction motors with different magnet materials — Influence on cost, losses, vehicle performance, energy use and environmental impact
Paper i proceeding, 2018
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.
environmental impact
efficiency
ferrite PMaSynRM
SmCo PMSM
FEM simulation
traction motors
automotive electric traction motors
electrical vehicle
NdDyFeB
SmCo
ferrites
SrFe3O4
strontium-ferrite magnets
NdDyFeB PMSM
life cycle assessment
Ferrites
cost estimation
SmCo motor
electric machine
permanent magnet machines
magnet materials
energy consumption
material cost estimate
permanent magnet motors
Författare
Emma Grunditz
Chalmers, Elektroteknik, Elkraftteknik
Sonja Lundmark
Chalmers, Elektroteknik, Elkraftteknik
Mikael C D Alatalo
Chalmers, Elektroteknik, Elkraftteknik
Torbjörn Thiringer
Chalmers, Elektroteknik, Elkraftteknik
Anders Nordelöf
Chalmers, Teknikens ekonomi och organisation, Environmental Systems Analysis
2018 Thirteenth International Conference on Ecological Vehicles and Renewable Energies (EVER)
1-13
IEEE 2018 Thirteenth International Conference on Ecological Vehicles and Renewable Energies (EVER)
Monte-Carlo, Monaco,
Monte-Carlo, Monaco,
Elmaskiner för fordon i en cirkulär ekonomi
Energimyndigheten (44201-1), 2017-03-01 -- 2020-10-31.
Chalmers, 2017-03-01 -- 2020-10-31.
Drivkrafter
Hållbar utveckling
Styrkeområden
Transport
Produktion
Energi
Materialvetenskap
Ämneskategorier
Transportteknik och logistik
Miljöanalys och bygginformationsteknik
Annan elektroteknik och elektronik
Fundament
Grundläggande vetenskaper
DOI
10.1109/EVER.2018.8362387