Ten-pole twelve-slot stator winding of three-phase permanent magnet linear motor

Abstract

The invention discloses a ten-pole twelve-slot stator winding of a three-phase permanent magnet linear motor. The ten-pole twelve-slot stator winding comprises a stator winding, wherein the stator winding is of a twelve-tooth-socket winding structure in a fractional-slot concentrated winding, the stator winding is formed in a way that a plurality of stator winding units are connected in series, A, B and C three-phase windings installed in the twelve tooth sockets in each stator winding unit are arranged according to a certain rule, and double windings are embedded into each tooth socket; and the three-phase permanent magnet linear motor corresponding to the length of each stator winding unit is five pairs of poles. Therefore, the stator winding designed by the invention has the advantages of being simple in structure, simple in manufacture technology and favorable for improving slot space factor, increasing motor capacity, improving motor efficiency, bringing good back emf waveform and reducing tooth socket torque and torque fluctuation, so that the three-phase permanent magnet linear motor can stably operate, motor vibration is weakened, and the fault rate of the motor is lowered.

Description

technical field [0001] The invention relates to a three-phase permanent magnet linear motor, in particular to a ten-pole and twelve-slot stator winding of a three-phase permanent magnet linear motor. It is suitable for oil recovery three-phase permanent magnet linear motor. Background technique [0002] Traditional oil pumping equipment is mainly beam pumping unit, and the whole set of equipment is divided into surface and underground. Because the situation of the oil well is complicated and changeable, the shortcomings of this pumping unit, such as heavy weight, large footprint, many faults and low efficiency, become very obvious. It is difficult for the sucker rod of this kind of oil pumping equipment to keep parallel to the axis of the oil pipe during the up and down reciprocating movement, especially in inclined wells. The resulting eccentric wear of the rod and pipe, resulting in pipe leakage, rod breakage and other problems have caused great problems. economic loss. ...

AI Technical Summary

Problems solved by technology

[0003] According to the above problems, the present invention provides a stator winding with ten poles and twelve slots for a three-phase permanent magnet linear motor, which has a good back EMF waveform, is conducive to the improvement of the slot fullness rate, increases the output of the motor, and reduces the cogging torque and torque Fluctuation, which solves the problem of positioning torque and torque ripple caused by motor integer slot winding, back EMF waveform difference, and current waveform distortion

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