A motor for reducing radial electromagnetic excitation force of pole frequency and slot frequency

Abstract

The invention relates to a motor for reducing the radial electromagnetic excitation force of pole frequency and slot frequency, which includes a stator frame, a stator iron core is fixedly arranged in the stator frame, and a rotor shaft is fixedly arranged in the stator frame through a bearing , the rotor core is fixed on the rotor shaft; it is characterized in that: it also includes stator permanent magnet poles, rotor armature windings and collector rings; the stator permanent magnet poles are fixed in the stator core; the rotor core is located in the stator permanent magnet Between the N pole and S pole of the magnetic pole, several slots are evenly opened on the outer circumference of the rotor core, and the rotor armature winding is arranged in the slot; it is located on one or both sides of the rotor core, and the collector ring is set on the rotor shaft. , each winding in the armature winding of the rotor is connected to the collector ring, and then connected to the external static power supply circuit through the brush. The invention can effectively reduce the vibration of the stator iron core and the stator frame, and achieve the purpose of reducing vibration and noise.

Description

technical field [0001] The invention relates to a motor, in particular to a motor whose excitation source is located in the stator for reducing the radial electromagnetic excitation force of pole frequency and slot frequency. 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...

AI Technical Summary

Problems solved by technology

These two types of electromagnetic exciting forces are caused by the nature of the motor, and it is extremely difficult to reduce and weaken these electromagnetic exciting forces

At present, methods such as reducing magnetic density, chute or closed slot are often used, but the result is either that the volume, weight and cost of the motor increase, or the effect is not obvious

So far, there is no better solution to motor vibration and noise

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