DC ELECTRIC MOTOR WITH HOLLOW ROTOR Russian patent published in 2010 - IPC H02K29/06 H02K29/00 H02K21/26 

FIELD: electricity.

SUBSTANCE: invention is related to the field of electric engineering, in particular to contactless DC electric motors and may be used in electric drive, where it is necessary to combine properties of contactless DC electric motor with hollow rotor specific for commutator electric motors. In proposed DC electric motor, comprising hollow nonmagnetic rotor with anchor winding, magnetic system on the basis of one or several permanent magnets, according to this invention, rotor comprises electronic commutator with internal rectifier, which is fixed on electric motor shaft, connected with anchor winding supplied with AC voltage from secondary winding of rotary transformer, installed on shaft of electric motor, besides primary winding of rotary transformer is installed on electric motor stator and is intended for connection to external source of power supply via frequency converter.

EFFECT: provision of high resource with high performance and efficiency factor.

3 cl, 2 dwg