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AI Engineering
Hacker News·Jun 12·5 min read
Renault: Electric motors with no rare earths
TL;DR
Electric vehicles typically rely on rare earth materials for their motors, creating supply chain vulnerabilities. Renault Group has developed Electrically Excited Synchronous Motors (EESM) that eliminate the need for these materials.
✦ Why It Matters
Engineers can explore rare earth-free motor designs to enhance sustainability and reduce supply chain risks.
Key Takeaways
- Investigate rare earth-free motor designs for sustainability.
- Consider EESM technology for future electric vehicle projects.
- Evaluate supply chain risks associated with traditional motors.
- Stay informed on advancements in electric motor technology.
Full Summary
Electric vehicles (EVs) have traditionally used motors that require rare earth materials, which are often sourced from limited suppliers, leading to potential supply chain issues. Renault Group has pioneered the development of Electrically Excited Synchronous Motors (EESM), which operate without magnets and thus do not require rare earth elements.
This technology converts electrical energy from the battery into mechanical energy through a magnetic field generated by the stator, which drives the rotor to power the vehicle. Since 2012, Renault has mass-marketed EESM technology, showcasing its commitment to innovation in the EV sector.
The introduction of EESM motors not only reduces dependency on rare earth materials but also enhances the sustainability of electric vehicles. As a result, Renault has established a competitive edge in the market, where 90% of electric cars still rely on traditional magnet-based motors.
This shift could influence future designs and manufacturing processes in the automotive industry.