Research on Wind Turbine Power Testing Under the Application of Cabin Lidar
There are other wind sources,buildings,and terrain factors in the environment around the fan,which makes it difficult to accurately collect the wind speed and direction of the fan,resulting in inaccurate fan power test results.Therefore,a method of fan power measurement under nacelle lidar application is proposed.The wind speed and di-rection are measured by the nacelle lidar technology.Zero-averaging method and filter are used to pre-process the power signal,calculate the torque,and calculate the torsion angle of the same frequency signal with the help of spec-trum analysis algorithm.According to the AC current signal output by the reluctance sensor,the phase difference of the fan is calculated,and the power of the fan is finally obtained.The experimental results show that the proposed method meets the requirements of the test accuracy grade of the fan,and the test accuracy is high.The power test of 8 fans can be completed within 18 ms.
cabin type lidarfan power testtorquespeedtorsion anglezero averaging processingFourier transformfiltering