BOREHOLE BIROTATORY ELECTRIC GENERATOR Russian patent published in 2008 - IPC E21B47/02 H02K5/00 

FIELD: electrical engineering.

SUBSTANCE: invention is related to the sphere of electrical engineering, namely to electrical machines, and is intended for application in generators for power supply to borehole equipment. Technical result, which is achieved by this invention, consists in increasing power of generator with simultaneous reduction of its diametral dimensions and weight. Specified technical result is achieved because in borehole birotatory electric generator, which contains attachment point, rotor with impeller of hydraulic turbine, which is installed in the front part with a set of permanent magnets that are installed on the rotor, and stator, with excitation winding installed on it, according to this invention, in the back part of electric generator there is the second hydraulic turbine impeller and the second set of permanent magnets installed on additional rotor, and excitation winding is installed in radial partition of stator between two sets of permanent magnets.

EFFECT: increases generator power and simultaneously reduces its diametral dimensions and weight.

5 cl, 2 dwg