BOREHOLE ELECTRIC GENERATOR Russian patent published in 2008 - IPC H02K7/18 H02K35/02 E21B47/22 

FIELD: electricity.

SUBSTANCE: invention relates to electric engineering and may be used in power generators of borehole hardware. Borehole electric generator includes fastening unit, rotor with hydro turbine impeller and, at least, one group of permanent magnet which has cinematic link with hydro turbine and associated induction windings. Cinematic link with permanent magnet groups is arranged through conversion mechanism of rotary motion to reciprocal motion, which can be arranged as driven disk installed on rotor, driving disk installed on axis and spring abutting on axis end. Holes are provided inside fastening unit. Fastening unit is located in front, middle or rear part of stator.

EFFECT: increase of electric generator power and lifetime while reducing diameter sizes.

6 cl, 1 dwg