Motor with nonlinearly distributed notches in axial direction
A non-linear and axial technology, applied in the shape/pattern/structure of the magnetic circuit, rotating parts of the magnetic circuit, etc., can solve the problems of the difficulty of implementing small motors and the difficulty of winding down the stator winding, and reduce vibration, diameter, etc. To the effect of uniformity of electromagnetic excitation force
Active Publication Date: 2016-02-03
TSINGHUA UNIV
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Problems solved by technology
However, this method is difficult to implement on the armature winding or the stator side of an asynchronous motor, because after the herringbone chute, it is difficult to get the stator winding off the assembly line. It may be feasible for a large motor because of the small inclination angle of the herringbone chute, but it is difficult for a small motor. implement
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[0032] Such as figure 1 and figure 2 As shown, the existing permanent magnet DC motor includes a stator base 1, a stator core 2, a stator permanent magnet pole 3, a rotor core 4, a rotor shaft 5, a bearing 6, a rotor armature winding 7 and a commutator (or Slip ring) 8; Wherein, the stator base 1 can be fixed by the installation method of a conventional motor, and the stator core 2 is a part of the magnetic circuit of the motor. A stator iron core 2 is fixedly arranged in the stator frame 1 , and a stator permanent magnet pole 3 is fixedly arranged in the stator iron core 2 . Located between the N pole and the S pole of the permanent magnet pole 3 of the stator, the rotor core 4 is fixed on the rotor shaft 5, and the rotor shaft 5 can drive the rotor core 4 to rotate around the axis, and the rotor shaft 5 is fixed on the stator through the bearing 6 In the machine base 1, several slots (not shown in the figure) are uniformly opened on the outer circumference of the rotor co...
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The invention relates to a motor with nonlinearly distributed notches in an axial direction. The motor comprises the components of a stator base, a stator core, a stator winding, a rotor core, a rotor shaft, bearings and a rotor armature winding. The stator core is fixedly arranged in the stator base. The stator winding is fixedly arranged in the stator core. The rotor core is fixedly arranged on the rotor shaft. The rotor shaft is fixedly arranged in the stator base through the bearings. The outer circumference of the rotor core is provided with a plurality of troughs uniformly. A tooth is arranged between two adjacent troughs. The rotor armature winding is arranged in the troughs. The motor is characterized in that the teeth are composed of the rotor core, rotor teeth and tooth boots; nonlinearly distributed structures are arranged at two sides of each tooth boot in an axial direction; the rotor teeth and the rotor core are in an integrated structure; and the rotor teeth and the tooth boot are in separated structures. The motor of the invention can effectively reduce trough frequency radial electromagnetic exciting force and cogging torque of the motor.
Description
technical field [0001] The invention relates to a motor, in particular to a motor with slots distributed non-linearly along the axial direction. Background technique [0002] Modern society cannot do without motors, and motors are used in transportation, industrial and agricultural production, information processing, and various fields of daily life. There are many types of motors with different structures, such as asynchronous motors, permanent magnet motors, electric excitation motors, etc. All kinds of motors will generate vibration and noise during the rotation process. Vibration noise is a kind of environmental pollution, which will have adverse effects on people's health and daily life; vibration and noise are more important in the military field. Therefore, it is of great significance to reduce the vibration and noise of the motor. [0003] The fundamental magnetic field and a series of harmonic magnetic fields exist in the air gap of the motor. During the operatio...
Claims
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IPC IPC(8): H02K1/22H02K1/24
Inventor 王善铭沈靖文曹海翔孙旭东柴建云王祥珩
Owner TSINGHUA UNIV