MULTI-SECTION DC ENGINE WITH RING SLIDING CONTACTS Russian patent published in 2018 - IPC H02K23/04 H02K25/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used in the construction of highly reliable, economical and high-speed DC motors. DC motor with annular sliding contacts includes a stationary stator, a rotor with an axis of rotation with a pair of bearings installed in the side covers, fastened to the stator body, and a magnetic system. Stationary stator is made of a hollow magnetically conductive cylinder inside which is placed a multipole rotor comprising a cylindrical permanent magnet with a magnetic induction B of radius R_M for example neodymium, the ends of which are rigidly fastened to two magnetically conductive multipole covers with the number of magnetic poles p on each of them of width h and length L spaced equidistantly along the circumference and equidistantly alternating the magnetic poles from both magnetically conductive covers. Compliance with equality πR_M²/2p=hL. In 2p magnetic gaps between the magnetic poles of the rotor and the stator are placed 2p of identical frame windings of n turns in each, placed in the corresponding two adjacent pairs of magnetic poles from different magnetically conductive covers, included among themselves according to the rule "the beginning of one winding with the beginning of the adjacent winding and the end of one winding with the end of the other adjacent". Both beginnings of the first winding and the beginning of the last 2p-th winding are connected through ring sliding contacts isolated from the axis of rotation and pins placed on the non-magnetically conductive stator covers to a direct current source with adjustable voltage.

EFFECT: technical result consists in increased reliability, economy and speed.

1 cl, 3 dwg