ELECTROMAGNETIC MACHINE WITH TWO-STAGE EXCITATION Russian patent published in 2012 - IPC H02K57/00 H02K21/26 H02K1/06 

FIELD: electricity.

SUBSTANCE: in the proposed electromagnetic machine there is the second stage of excitation, which makes it possible to avoid generation of parasitizing EMF in windings of motive poles of the main stator when passed by the electromagnetic poles of the inductor. During rotation of the movable intermediate inductor (rotor) from an external motor, EMF will be induced in the active wires of the movable stator resulting in windings of the electromagnetic poles of the movable inductor. It is due to the fact that these wires will periodically cross now outgoing, now converging lines of magnetic field induction, developed by magnetic poles of permanent magnets of a fixed central inductor. Magnetic flows developed by currents in windings of the movable inductor piles increase due to their ferromagnetic cores µ times, which will penetrate active wires of the main fixed stator generator poles windings. As a result of electromagnetic induction EMF are induced, which will cause currents in windings of movable poles of the main fixed stator. The latter are polarised at the same time, their magnetic flows also increase µ times and start interacting positively with electromagnetic poles of the movable inductor. As a result each pole of the movable inductor along with its motion will always be exposed to a pair of positive forces, which will help the rotor to reach the nominal speed.

EFFECT: improved electromechanical characteristics of the electromagnetic machine with simultaneous increase of its efficiency.

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