MULTI-DISC UNIPOLAR DC MACHINE WITHOUT SLIDING CONTACTS Russian patent published in 2011 - IPC H02K31/04 H02K21/24 

FIELD: electricity.

SUBSTANCE: in the proposed design of the unipolar electric machine (UM) the electric contacts are electroconductive roller swinging contacts and fixed cylindrical cartridges, to which electric conductors are soldered. Such design of electric contacts without high complexity makes it possible to electrically serially connect all their rotor discs into the anchor circuit, which allows increasing of working voltage. At the same time the swinging friction between electroconductive rollers and fixed cylindrical cartridges, and also active parts of rotor discs (hubs) is incomparably less than sliding friction between conventional sliding brush contacts and contact rings.

EFFECT: improved electromechanical characteristics, increased reliability of operation, increased wear resistance, simplified design, increasing working voltage of the unipolar electric machine several times, expansion of its field of application.

2 dwg