High-pole alternator for back-geared motor torque/speed ranges, uses a frequency converter with higher frequencies and a much higher number of poles

摘要

Only one simple winding (7) is needed per phase (L1-L3) for a high number of ferrite poles (9). Several phases can fit side by side. Ferrite core material (4,5) keeps down loss from eddy currents and magnetic reversals very well. A rotor (3) can be used without a conductor and a permanent magnet.