Any motor experts here? Why are they chasing rare earth metals in the first place? In the end, the mines are going to be in China anyway, right? Why don't we design around rare earth magnets in the first place?
Synchronous reluctance motors where torque density isn't a strict requirement, and brushless separately excited synchronous motors (synchro motor with electromagnets on the rotor) for high torque/energy density applications?
Synchronous reluctance motors where torque density isn't a strict requirement, and brushless separately excited synchronous motors (synchro motor with electromagnets on the rotor) for high torque/energy density applications?