Research on Fault Diagnosis Technology for Doubly Fed Wind Turbines
As a new type of wind power generation device,the doubly fed wind turbine has a relatively complex structure and operating environment,with many influencing factors and a high unit failure rate.On the basis of introducing the basic composition of doubly fed wind turbines,this article first briefly describes the common gearbox structures,then analyzes the fault location.Then,taking the two-stage planetary parallel shaft gear structure as an example,vibration analysis is conducted using tools such as time-domain analysis,frequency-domain analysis,and envelope demodulation.Finally,diagnostic conclusions are drawn and maintenance suggestions are given.The results indicate that this method can provide effective guidance and assistance for on-site predictive maintenance,and has certain practical value.
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