Vibration absorbing device for motor stator, motor stator and motor

Abstract

The invention provides a vibration-absorbing apparatus for a motor stator. The vibration-absorbing apparatus comprises a supporting apparatus that is fixedly connected with a motor stator bracket, a vibration-absorbing frequency adjusting apparatus that is used for adjusting the inherent frequency of the vibration-absorbing apparatus according to the vibration frequency of the motor stator, and a guide apparatus that is used for guiding the vibration-absorbing frequency adjusting apparatus to vibrate in a direction opposite to the vibration direction of the motor stator; the vibration-absorbing frequency adjusting apparatus comprises a quality adjusting apparatus and an elasticity adjusting apparatus; the quality adjusting apparatus adjusts the inherent frequency of the vibration-absorbing apparatus so as to enable the frequency to be matched with the vibration frequency of the motor stator; and the elasticity adjusting apparatus controls the quality adjusting apparatus to vibrate before and after a balanced position. According to the vibration-absorbing apparatus for the motor stator, the dynamic vibration-absorbing apparatus is designed and mounted in different positions of the motor stator to suppress the vibration of the motor and the whole machine so as to reduce operating faults of the motor caused by vibration and to improve the operating reliability of the unit; and the invention also provides the motor stator and the motor provided with the vibration-absorbing apparatus.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a vibration absorbing device for reducing vibration of a generator of a wind turbine, a motor stator and a motor provided with the vibration absorbing device. Background technique [0002] Among renewable energy sources, wind energy is a very clean and promising energy source. my country's ground wind energy reserves are 3.226 billion kw, and the exploitable resources reach 253 million kw. Vigorously developing wind power generation has certain economic and social benefits. However, the vibration and noise of wind turbines during operation cannot be ignored more and more, which has become an urgent problem to be solved in the development of wind power industry. [0003] In the prior art, there have been relevant studies on reducing the vibration of wind turbines, mainly by improving the vibration of the tower system, axially limiting the stator and rotor, or adjus...

AI Technical Summary

Problems solved by technology

The inventor found through repeated research that the existing generator vibration reduction system cannot fundamentally suppress the large-scale vibration of the generator, and it is easy to cause the generator to stall when the vibration is suppressed, and the vibration reduction effect is poor. The active control method allows the unit to pass quickly within the speed range where vibration occurs, and the power generation of the unit will be lost to a certain extent; and the unit will only trigger active control when the vibration amplitude reaches a certain level, and the generator still has the risk of vibration

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