Harmonic Parameters Identification Based On LpFFT And Order Analysis

In this paper,major research was on the identification of the harmonic parameters from the project signal using LpFFT.On the base of the introduction of the theory of the LpFFT,with the tool of Matlab,the paper maked the identification from the simulation signals,such as single frequency signals,harmonic signal and inter-harmonic signals with or without noise using LpFFT,and compared the results with different sampling points,sampling frequency and the windows in the LpFFT;analysing a take-off and landing signal of the turbine-generator unit,combining with concrete examples making the signal analysing with LpFFT;using Labview developing the signal frequency extraction software based on the LpFFT.Finally the paper dicussed the order analysing method based on the signal resampling,and make the order analysis on the take-off and landing process for steam turbine...