GM and Stellantis Back Rare-Earth-Free Permanent Magnet
Cars That Think
NOVEMBER 15, 2023
For several years, the automobile industry has grappled with a straightforward question: Is it possible to produce a powerful, efficient, and mass-producible synchronous motor that contains no rare-earth elements at all? The standard permanent magnet used in EV motors, neodymium iron boron, has a κ of 1.54, according to this table.
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