Motor and its control method

A shell and stator technology, applied in the field of motor and its control, can solve the problem that the motor cannot drive the load to run, and achieve the effect of ensuring performance, ensuring rationality, and slowing heat dissipation

Active Publication Date: 2020-05-12
浙江江宇电机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the rotor of the motor is seriously shifted, the motor cannot drive the load to run at all.

Method used

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  • Motor and its control method
  • Motor and its control method

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Embodiment Construction

[0050] figure 1 is a schematic structural diagram of a motor according to an embodiment of the present invention. Such as figure 1 shown, and refer to Figure 2 to Figure 12 , the embodiment of the present invention provides a motor. Generally, the motor may include a housing 100 , a stator 200 and a rotor 300 . The housing 100 generally has a main housing 110 and end covers disposed on two ends of the main housing 110 , such as a housing front cover 120 and a housing rear end cover 130 . The stator 200 is disposed in the housing 100 . The rotor 300 is disposed radially inside the stator 200 . The iron core of the stator 200 has stator slots 210 for winding windings 240 .

[0051]In some embodiments of the present invention, in order to improve the heat dissipation performance of the motor, the stator 200 also has a plurality of cooling hole groups, and each cooling hole group has two first strip-shaped holes 220 arranged on both sides of a corresponding stator slot 210 ...

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Abstract

The invention provides a motor and a control method thereof. The motor comprises a shell, a stator and a rotor, wherein the stator is arranged in the shell; the rotor is arranged at the radial inner side of the stator; the shell is provided with a rear end cover and a shaft end groove is arranged in the rear end cover; the rotor is provided with an output shaft and the rear end of the output shaftis inserted into the shaft end groove; the motor further comprises a displacement preventing device provided with a primary and a secondary and a displacement detecting device; the primary is arranged on the peripheral wall of the shaft end groove and the secondary is arranged on the rear end of the output shaft; and the displacement detecting device is used for detecting the displacement betweenthe real-time position and the initial position of the output shaft so as to control the primary according to the displacement and keep the output shaft at the initial position. The motor has the advantages that by means of the displacement detecting device and the displacement preventing device, when the axial displacement of the output shaft is detected by the displacement detecting device, a current supplied to the primary is controlled and the like to drive the output shaft to move towards the opposite direction of the axial displacement direction by the secondary, so that the axial displacement is prevented, and in particular, the rotation of the output shaft is not affected.

Description

technical field [0001] The invention relates to the field of motors, in particular to a motor and a control method thereof. Background technique [0002] At present, during the use of the motor, there is a special phenomenon that the rotor is shifting. The rotor of the motor breaks out of the stator core, and the axial displacement occurs, which is called the rotor drifting shaft. Normally, the ends of the stator core and rotor core are aligned, or the rotor is slightly shorter than the stator core. When the rotor core protrudes out of the stator core by 5 mm or more, the three-phase no-load current of the motor will increase significantly. After the load is applied, the stator current will exceed the rated current value, causing the motor to overheat. At the same time, there will be bursts of uneven but regular humming. If the motor rotor is severely shifted, the motor cannot drive the load to run at all. Contents of the invention [0003] The purpose of the present i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/12H02K9/22H02K9/00H02K15/12H02K9/197H02K1/20H02K3/34H02K5/173H02K5/24
CPCH02K1/20H02K3/345H02K5/1732H02K5/24H02K7/12H02K9/00H02K9/197H02K9/22H02K15/12
Inventor 尹洁应军江李晓宇王银萍
Owner 浙江江宇电机有限公司
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