Magnetic hysteresis coupler for driving wind-unwind device, has armature permanent magnet produced in form of ring of one piece in magnetic material with vertical hysteresis loop and including through-slots for attenuating radial currents

摘要

The coupler (1) has an inductor subassembly (2) and an armature subassembly rotating with respect to each other, where the inductor subassembly has magnetic poles. The armature subassembly has armature permanent magnets (11, 12) with hysteresis. Each armature permanent magnet is produced in the form of a ring of one piece in a magnetic material with vertical hysteresis loop and has through-slots for attenuating radial currents, where the slots are arranged along circumferential extension of the ring.