Platform for simulating influence of shaft current on performance degeneration of bearing of wind generating set

A technology for wind turbines and wind turbines, applied in the direction of mechanical bearing testing, etc., can solve problems such as poor grounding, bearing failure, bearing failure, etc., to avoid misjudgment and easy control.

Pending Publication Date: 2018-06-15
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to reasons such as poor grounding, aging insulation, and the wide application of inverter technology, shaft cu

Method used

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Example Embodiment

[0015] The present invention will be further described below in conjunction with the drawings.

[0016] Reference attached Figure 1 ~ Figure 4 , A simulation platform for the impact of shaft current on the performance degradation of wind turbine bearings, including liftable bases, brushless DC motors, permanent magnet wind turbines, belts, pulleys, brushes, motor speed control devices, DC power supplies, and external power supplies , An electric power consumption device and a signal acquisition system, the liftable base includes a lower base plate, a threaded rod, a threaded sleeve, and an upper base plate, the lower base plate is installed and fixed to the DC brushless motor, and the upper base plate is installed and fixed The permanent magnet wind generator, the DC brushless motor and the permanent magnet wind generator are driven by the belt and the pulley, and the brushes are connected to the pulley and the shaft between the permanent magnet wind generator Contact, the motor s

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Abstract

The invention relates to a platform for simulating influence of a shaft current on performance degeneration of a bearing of a wind generating set. A DC brushless motor is fixedly installed on a lowerbase plate, a permanent-magnetic aerogenerator is fixedly mounted on an upper base plate, the DC brushless motor and the permanent-magnetic aerogenerator uses a belt and belt pulleys for transmission,a brush makes contact with a shaft between the belt pulleys and the permanent-magnetic aerogenerator, a motor speed regulator is arranged on the right of the DC brushless motor, a motor controller isfixed on a lower pedestal, a single-chip microcomputer is connected with a PWM signal reception module of the motor controller in the motor speed regulator, and an output end of the permanent-magnetic aerogenerator is connected with an electric energy consumption device; a signal collection system is composed of a sensor and a data collection card; and an external power supply forms a loop via the brush, shaft, bearing and permanent-magnetic aerogenerator. According to the invention, a bearing performance degeneration process from a bearing fault caused by the shaft current of the wind generating set to attenuation and event failure of the bearing performance is researched.

Description

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Claims

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Application Information

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Owner ZHEJIANG UNIV OF TECH
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