A low-vibration motor with field poles located on the stator

Abstract

The invention relates to a low vibration motor with excitation magnetic poles on a stator. The low vibration motor comprises a stator base. A stator core is fixedly arranged in the stator base. A rotor core is fixedly arranged on a rotor shaft. The rotor shaft is fixedly arranged in the stator base through a bearing. The low vibration motor is characterized in that the low vibration motor further comprises stator permanent magnet poles, rotor armature windings and a collector ring or a commutator. The stator permanent magnet poles are fixedly arranged in the stator core. The rotor core is located in a space surrounded by the stator permanent magnet poles. A number of slots are evenly arranged on the outer circumference of the rotor core. The rotor armature windings are arranged in the slots. On one or both sides of the rotor core, the collector ring or the commutator is arranged on the rotor shaft. Each rotor armature winding is connected with the collector ring or the commutator, and then is connected with an external static power supply circuit through a brush. The magnetic pole edges of the excitation magnetic poles are provided with grooves and convex teeth. The grooves and the convex teeth are alternately arranged. According to the invention, the polar frequency radial electromagnetic exciting force received by the stator is eliminated; the radial electromagnetic exciting force and the bending moment of the slot frequency are reduced; and the vibration of the stator core and the base is reduced.

Description

technical field [0001] The invention relates to a motor, in particular to a low-vibration motor in which the excitation magnetic pole is located in the stator. 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. Duri...

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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