Platform of simulating influence of shaft current on generator bearing performance degradation
A generator bearing and simulation platform technology, applied in mechanical bearing testing, mechanical component testing, machine/structural component testing, etc., can solve problems such as poor grounding, easy generation of shaft current, bearing failure, etc., to avoid misjudgment , easy-to-control effects
Pending Publication Date: 2018-04-13
ZHEJIANG UNIV OF TECH
View PDF0 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
With the wide application of power electronics technology in generator control and the insulation damage, aging, and poor grounding of the generator itself, it is easy to generate shaft current, cause bearing failure, and then lead to bearing failure
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0015] The present invention will be further described below in conjunction with the accompanying drawings.
[0016] Refer to attached Figure 1 ~ Figure 4 , a simulation platform for the influence of shaft current on the performance degradation of generator bearings, including base, DC brushless motor, permanent magnet generator, coupling, brush, motor speed control device, DC power supply, external power supply, power consumption device and a signal acquisition system, a DC brushless motor and a permanent magnet generator are placed on the base, and the DC brushless motor and the permanent magnet generator are connected by a coupling, and the brushes and the coupling are both connected to the permanent magnet generator The shafts in the middle of the machine are in contact with each other. The motor speed control device is on the right side of the brushless DC motor. The motor speed control device includes a motor controller and a single-chip microcomputer. The motor control...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A platform of simulating the influence of a shaft current on the generator bearing performance degradation is characterized in that a DC brushless motor and a permanent magnetism generator are placedon a pedestal and are connected via a coupling, an electric brush and the coupling are both contacted with a shaft in the middle of the permanent magnetism generator, and a motor speed regulation device is arranged at the right side of the DC brushless motor and comprises a motor controller and a single-chip microcomputer; the motor controller is fixed on the pedestal, the single-chip microcomputer is connected with a PWM signal reception module of the motor controller, and the output end of the permanent magnetism generator is connected with an electric energy consumption device; an information acquisition system is composed of the sensors used for acquiring the vibration and current signals of the permanent magnetism generator and a data acquisition card used for receiving the signals acquired by the sensors, and an external power supply forms a loop via the electric brush, the shaft, a bearing and the permanent magnetism generator. The platform of the present invention researches abearing performance degradation process that the shaft current reasons cause the generator bearing faults and further cause the bearing performance degradation until to failure.
Description
technical field [0001] The invention relates to generator bearings, in particular to permanent magnet generator bearings, and relates to a simulation platform for the influence of shaft current on performance degradation of generator bearings. Background technique [0002] Bearing is a key component in generator, bearing failure will lead to the failure of the whole generator, so it is necessary to study the cause, mechanism and performance degradation process of bearing failure. At present, the research on bearing failure is mainly carried out from the aspects of fatigue wear caused by improper lubrication and excessive load. With the wide application of power electronics technology in generator control and the insulation damage, aging and poor grounding of the generator itself, it is easy to generate shaft current, cause bearing failure, and then lead to bearing failure. Contents of the invention [0003] In order to study the generator bearing failure caused by the sha...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01M13/04
CPCG01M13/04G01M13/045
Inventor 金晓航许壮伟
Owner ZHEJIANG UNIV OF TECH