ASYNCHRONOUS STATOR MAGNETIC COUPLING Russian patent published in 2018 - IPC H02K49/02 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used to transfer mechanical energy with a sealed separation of the cavities of the driving and driven shafts and for driving mechanisms with large moments with a significant difference in the angular velocities of the half couplings. Asynchronous stator magnetic coupling contains two coupling halves. On the leading half-coupling there are fixed magnets with the number of pole pairs p (where p = 1, 2, …n), and the driven half-coupling has an axle winding and a stationary stator consisting of separate magnetic circuits arranged along the circumference, the number of which is z=2(p+kp/2) (where k=1, 2, …n). Magnetic cores are united by a stator casing made of non-magnetic metal. Stator passes through a screen separating the cavities of the driving and driven shafts. On both sides of the screen there are working parts of the stator, with which the coupling halves interact. Between the couplings and the stator, there is a basic air gap of the minimum possible size, at least ten times greater than the main air gap. When the driving half-coupling rotates, a rotating magnetic flux is formed in the stator, which, crossing the winding of the driven coupling half, induces an emf in it. Emerging in axle winding the electric current interacts with the rotating magnetic field of the stator, creating a rotating electromagnetic moment that rotates the driven coupling half in the same direction as the leading half coupling.

EFFECT: technical result is high specific characteristics with a significant (more than 20 mm) thickness of the separating screen, which provides a high pressure difference and radiation safety.

1 cl, 2 dwg