A New Comprehensive Experimental Platform for Fault Diagnosis of Wind Turbine Transmission System

Abstract

The invention discloses a novel comprehensive experimental platform for fault diagnosis of a wind turbine drive system. The novel comprehensive experimental platform comprises a stepless speed regulating motor, wherein the stepless speed regulating motor controls a rotation speed through a frequency converter, and is connected with a gear reducer; the gear reducer is connected with a main bearing device through a universal coupling; the main bearing device is connected with a low-speed level input shaft of a two-stage planetary gear speed-increasing box through a first flange coupling; a high-speed level output shaft of the two-stage planetary gear speed-increasing box is connected with a large gear shaft of a one-stage helical gear speed-increasing box through a second flange coupling; a small gear shaft of the one-stage helical gear speed-increasing box is connected with a magnetic powder brake through a third flange coupling; the magnetic powder brake is connected with a permanent magnet tachogenerator through a fourth flange coupling; and the permanent magnet tachogenerator is in power supply connection with a load lamp bulb. The novel comprehensive experimental platform is established on the basis of a doubly-fed wind turbine unit transmission system which is commonly used at present, and can simulate complex working conditions such as variable torque, variable rotational speed and variable wind direction of wind turbines.

Description

technical field [0001] The invention belongs to the field of fault diagnosis of a wind turbine transmission system, in particular to a novel comprehensive experiment platform for fault diagnosis of a wind turbine transmission system. Background technique [0002] At present, with the increasing consumption of energy, the development of new energy has entered a period of rapid growth. As a new energy with abundant reserves, wind energy has been widely used by various countries, especially for China, which is vigorously developing wind power generation. However, due to technical limitations and environmental factors, various faults often occur in wind power generation equipment, which seriously affects the efficiency of wind power generation and the further promotion of wind power. [0003] The transmission system of wind power equipment is a part with a high incidence of faults, and the fault diagnosis of the transmission system is an important content of wind turbine fault d...

AI Technical Summary

Problems solved by technology

At present, some domestic universities and scientific research institutions are doing relevant experimental platforms to simulate the actual operation of wind turbines, but the relevant experimental platforms are relatively complex in structure and are quite different from the actual wind turbine structure, and generally do not involve the main bearing device; At the same time, it is impossible to simulate the situation where the wind direction is not perpendicular to the input in the vast majority of cases

In terms of adjusting the centering of each device, some experimental platforms are either not designed, or are realized through other complex devices

In addition, the scalability of the test bench is not high, and the flexibility is low

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