In electric generators that use electromagnets instead of permanent magnets, how do they get the electricity to power the magnets? Do they require an external power source? - Quora
If you put strong magnets outside the frame of an electric motor, will the power increase? - Quora
Mahle unveils magnet-free electric motor with 95 percent efficiency : r/tech
Energies | Free Full-Text | Comparative Analysis of the Steady-State Model Including Non-Linear Flux Linkage Surfaces and the Simplified Linearized Model when Applied to a Highly-Saturated Permanent Magnet Synchronous Machine—Evaluation Based on
ELECTIC MOTOR Neodymium Magnets Rotor | Magnetic Games - YouTube
Energies | Free Full-Text | Comparative Analysis of the Steady-State Model Including Non-Linear Flux Linkage Surfaces and the Simplified Linearized Model when Applied to a Highly-Saturated Permanent Magnet Synchronous Machine—Evaluation Based on