Proterial and FEV simulate amorphous alloy EV traction motor without heavy rare earths
By Eve
Materials manufacturer Proterial and engineering services firm FEV have used simulation to evaluate an EV traction motor concept combining Proterial's amorphous alloy core material with its heavy rare earth free neodymium sintered magnets. FEV built a reference model of a 230 kW drive unit representative of modern passenger car BEVs with silicon steel, then evaluated the amorphous alloy through electromagnetic simulation. The concept is designed to exploit the alloy's lower iron loss at a higher maximum motor speed of 20,000 rpm, compared with 14,900 rpm for the reference, with the reduction ratio raised from 10.8 to 14.4.
Why it matters
The simulation demonstrates a potential pathway to reduce reliance on heavy rare earths such as terbium and dysprosium, which face resource constraints and procurement risk, while improving motor efficiency through amorphous alloy cores. For CPOs and OEMs, supply chain diversification away from constrained materials could lower long term procurement costs and improve resilience in EV drivetrain component sourcing.
Source
- Original title
- “Proterial and FEV simulate an amorphous-alloy EV traction motor without heavy rare earths”
- Published
- 27 October 2026
- Updated
- 28 October 2026
In this story
- Topic
- Electric Vehicles
- Place
- Global
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