Rotor staggered structure motor

Abstract

The invention discloses a rotor staggered structure motor. The rotor staggered structure motor comprises a stator and a rotor, wherein the stator sleeves the outer side of the rotor; the stator comprises a first stator iron core, a second stator iron core, an armature winding, an exciting winding and a motor shell, the exciting winding is fixed on an annular exciting winding support, the first stator iron core and the second stator iron core are symmetrically arranged on two sides of the exciting winding, and teeth of the first stator iron core and teeth of the second stator iron core are not staggered in the peripheral direction; the rotor comprises a rotor iron core, a first permanent magnet and a second permanent magnet, a first groove corresponding to the first stator iron core and a second groove corresponding to the second stator iron core are staggered by Pi / n in the peripheral direction. According to the rotor staggered structure motor, through combined action of an iron core pole and a permanent magnet pole, the constant component and higher harmonic content of an air-gap field are reduced, so that the loss of iron cores is reduced, the fundamental current amplitude of the air-gap field is increased, and the utilization rate of the material is improved; and moreover, a rotor groove is filled with the permanent magnets, so that the wind drag and noise are reduced, the mechanical loss is reduced, and the operating efficiency of the motor is improved.

Description

technical field [0001] The invention relates to a motor with a rotor dislocation structure, which belongs to the motor technology. Background technique [0002] It is a common goal to use the motor space and material as much as possible, and at the same time we hope to save material and improve the performance of the motor. For example, for the slotted rotor motor, on the one hand, the slotting forms an uneven air gap, which generates an alternating magnetic field under the action of the excitation current; on the other hand, the rotor slotting brings space tooth harmonics, which increases the mechanical loss of the rotor and reduces the efficiency of the motor. . [0003] The air-gap magnetic fields in the motor include unipolar and bipolar fields. For the bipolar magnetic field, there is no DC component of the magnetic field, and even if there is a high-order harmonic component, its amplitude can be weakened by methods such as chute or short distance. For the unipolar m...

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Problems solved by technology

For the unipolar magnetic field, there is a large constant component in the air gap magnetic field. When the constant component is large, it will affect the saturation degree of the motor material and increase the core loss; at the same time, the unipolar magnetic field also means that the high-order harmonic content Larger, the potential at both ends of the motor winding or the fluctuation component of the output torque will increase, and the vibration and noise will increase

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