BorgWarner and Oak Ridge National Laboratory won an R&D 100 Award for a rotary transformer system that powers electromagnet-based motor rotors wirelessly, removing permanent magnets and the rare earth materials China controls.
TLDR
BorgWarner’s award-winning motor design replaces permanent magnet rotors with electromagnets powered by wireless rotary transformers, eliminating rare earth material dependence while delivering 92-95% efficiency, 20,000+ rpm capability, and 25% greater power density than conventional designs.
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