SUPER-FLYWHEEL ENERGY STORAGE Russian patent published in 2011 - IPC H02K16/04 H02K7/02 H02K1/06 

FIELD: electricity.

SUBSTANCE: super-flywheel energy storage comprises a motor-generator and a super-flywheel enclosed into a tight vacuumised shell. The motor-generator is arranged in the form of a double-disc stator and a disc rotor Y arranged between them with permanent magnets arranged on its surfaces, besides, value of air gap between the upper stator disc and the rotor disc is arranged of smaller diametre compared to value of air gap between the lower disc of stator and rotor disc. The super-flywheel, accumulating energy, is rigidly connected to the rotor disc. As a result of various value of air gaps, the considerable axial electromagnet force is generated, which is directed upwards and fully or partially balances weight of super-flywheel and rotor, thus unloading the device magnetic supports. The super-flywheel energy storage comprises heat exchangers, which exhaust heat released by windings and magnetic conductors of the stator. For emergency braking there is a braking device made of braking electric coils and a braking disc, role of which is performed by the rotor disc.

EFFECT: reduced dimensions and material intensity of the super-flywheel energy storage with simultaneous increase of its operational reliability.

3 cl, 2 dwg