REACTIVE MAGNETIC COUPLER

摘要

A reactive magnetic coupler comprises two half couplings, one of which comprises permanent magnets 1, placed on ferromagnetic yoke 2. The second half coupling comprises sector-type ferromagnetic poles 3, which are separated from each other by nonmagnetic gap 4 and are placed on a light, nonmagnetic material body 5. Both half couplings are separated from each other by hermetic, fixed screen 6. When the half coupling with the permanent magnets starts to rotate, the permanent magnets' magnetic flux between conversely magnetized poles closes through the second coupling's sector-form poles. The maximal value of magnetic flux in the airgap ¦ max is in the case, when angle ¸ between magnets' axis (m) and to m nearest ferromagnetic pole axis (p) is equal to 45 geometrical degrees. In this case the mutual placement of both (driving and driven) half couplings conforms to coupler's idle mode, where the torque is equal to zero. The magnetic flux in the airgap is minimal ¦ min , when the axes m and p match, that means, ¸ = 0°. In this case the mutual placement of both half couplings has unstable balance, and the torque is again equal to zero. The offered reactive magnetic coupler's design has improved technical and weight-dimensions parameters.