DOUBLE FREQUENCY ELECTRICAL MACHINE Russian patent published in 2013 - IPC H02K17/14 H02K17/12 

FIELD: electrical engineering.

SUBSTANCE: invention is aimed to enable electric energy transmission from a stationary source to a rotary receiver such as from a solar cell battery rotating round the space vehicle to such space vehicle as well as a rotary receiver drive. According to the invention, the double frequency electrical machine has two three-phase windings combined within a common stator core, the numbers of the windings pole pairs equal to p₁ and p₂; induced in the poles are EMPs with frequencies equal to f₁ and f₂ accordingly (f₁<f₂); there are terminals for connection of external electrical circuits; placed on the rotor is at least one phase winding having terminals for connection of external electrical circuits. Additionally, the double frequency electrical machine may have a rotor with magnetised poles or unmagnetised projections, their number equal to 2·p₁.

EFFECT: reliability enhancement as compared to energy transmission devices with a brush contact unit as well as improvement of weight and dimension indicators as compared with devices for energy transmission via a cable reel.

3 cl, 2 dwg