ELECTRIC MACHINE, NAMELY SYNCHRONOUS ENGINE WITH STANDBY STATOR WINDINGS Russian patent published in 2010 - IPC H02K3/16 H02K3/28 

FIELD: electricity.

SUBSTANCE: electric machine (1) includes stator (2) and rotor (5); at that, stator (2) has stator slots (8) in which there laid is stator winding (4) with standby and at least three-phase systems of windings (U1, V1, W1; U2, V2, W2). According to invention, electric machine (1) includes variety of poles with number of poles (PZ) of at least four, number (NZ) of stator slots (8), which corresponds to the product of the number of phases by the square of number of poles (PZ) of electric machine (1) or its integral multiple, as well as the number of systems of windings (U1, V1, W1;…; U4, V4, W4) corresponding to the number of poles (PZ). Every time the number of in-phase branches (U1 - U4, V1 - V4, W1 - W4), which corresponds to the number of poles (PZ), is combined into one phase group of branches (PU, PV, PW). Phase groups of branches (PU, PV, PW) are laid cyclically along phases and pole after pole in stator slots (8) of stator (2). There is area of slots (N1 - N4), which corresponds to the number of poles (PZ), for each pole and phase group of branches (PU, PV, PW). Slots are occupied so that in-phase branches (U1 - U4, V1 - V4, W1 - W4) are uniformly distributed according to their numbering along slot positions (N1, …, N4) of corresponding slot areas (N1 - N4).

EFFECT: decreasing structural dimensions of electric machine with standby stator windings at maintaining nominal electric capacity of this electric machine, which shall be calculated as per parametres with smaller reserve, as well as design of electric drive with such electric machine.

17 cl, 9 dwg