NON-CONTACT TORQUE MOTOR Russian patent published in 2025 - IPC H02K26/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, specifically to non-contact multipolar synchronous torque motors with permanent magnets for high-precision controlled electric drives. Non-contact torque motor contains a rotor with salient poles with number of 2p of alternating polarity, formed by permanent magnets fixed thereon, magnetically soft slotted stator with identical evenly distributed teeth number Z_C, facing the rotor poles, and a stator winding with a number of phases m equal to three, each phase in which is formed by k coil groups consisting of n series-opposite-connected coils covering one stator tooth. Number of coils n in a coil group is made greater than one, and each stator tooth is covered by the same number of coils N, greater than one and not exceeding n, wherein the number of rotor poles 2p is related to the number of stator teeth Z_C relationship 2p=Z_C±k/N at Z_C=m⋅n⋅k/N. Winding of each phase is made in the form of sets of coil groups with number R equal to N, by k/R coil groups in each set so that coil groups within each set are distributed uniformly along the stator circumference and if n is even, they are connected to each other in opposite directions, and if n is odd – in accordance, at that, the sets of coil groups in each phase are connected to each other in series-opposite manner and are arranged on the stator so that each of the R sets of coil groups is offset relative to the previous one along the stator circumference by one stator tooth in the same direction.

EFFECT: reduction of pulsations of torque developed by a non-contact torque electric motor, increase in uniformity of rotation of its rotor within a revolution, increase in specific torque and energy efficiency.

10 cl, 2 dwg