Variable frequency motor

Abstract

The invention discloses a variable frequency motor and relates to the field of motors. The variable frequency motor comprises a shell, a stator and a rotating shaft, the stator is mounted in the shell, an end cover is mounted at each of two ends of the shell, wherein the end cover comprises a front cover and a rear cover; the rotating shaft is provided with a rotor, and the rotor is a multi-polar magnetic ring which is made of permanent magnet oxysome; a coil winds the stator; the rear cover is provided with a radiating hood; an air blower and a fan are mounted in the radiating hood; the shell is provided with a control junction box which is connected with the coil; an IC control chip, an inverting tube and a buffer circuit are mounted in the control junction box; the inverting tube and the buffer circuit are connected with the IC control chip in series after being connected in parallel. The integrated design performance of the multi-polar magnetic ring of the rotor is reliable, and the mounting difficulty is low; the SPWM operation of the IC control chip and the inverting buffer of the inverting tube and the buffer circuit are capable of generating electric parameters with adjustable frequency, and the electric parameters are capable of realizing the regulation for the motor rotating speed after being input to the motor; the variable frequency motor saves energy, is effective, and is compact in structure.

Description

technical field [0001] The invention belongs to the field of motors, in particular to a variable frequency motor. Background technique [0002] With the development of power electronics technology, the application demand of motors in many industries is high. In particular, variable frequency motors are increasingly widely used in industrial production due to their advantages of intelligent control, high productivity and miniaturization of equipment. Application number 201220313814.7 discloses a variable frequency motor, including a machine barrel, a rotating shaft is plugged into the barrel, a rotor is sleeved in the rotating shaft, a stator is wrapped around the rotor, and a coil is wound on the stator. The barrel is provided with a junction box connected thereto, and a junction board is arranged in the junction box, and the junction board is connected to the coil, and the tail of the rotating shaft is connected to the barrel through the back cover. Positioning, the rear c...

AI Technical Summary

Problems solved by technology

The variable frequency motor has compact structure, convenient operation, good heat dissipation performance, improved product performance, and extended service life. However, in this invention, the number of armatures required in the rotor is large and the installation density is high, which brings inconvenience to the assembly of the motor and permanently The magnetic requirements of the magnets are different, which makes the installation technical requirements higher. At the same time, the motor lacks a control module for frequency conversion and speed regulation, which cannot achieve the effect of high efficiency and energy saving, and the engineering practicability is poor.

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