短時(shí)數(shù)據(jù)下利用雙HTLS參數(shù)估計(jì)的異步電機(jī)轉(zhuǎn)子斷條故障診斷
[Abstract]:The spectral resolution of the traditional algorithm based on Fourier analysis is limited by the length of the data. In view of this, a method of fault diagnosis of rotor bar breakage of asynchronous motor based on double HTLS algorithm is proposed in this paper. The fundamental amplitude, frequency and phase parameters are estimated accurately by using the translation invariant property of the left odd heteron matrix of the Hankel matrix in the HTLS algorithm. Then, the fundamental expression is constructed by using the fundamental parameters, and the residual current is obtained by removing it from the original signal of stator current, and the residual current is estimated again by HTLS parameters to identify the parameters of the fault components, and the influence of noise is effectively suppressed. The experimental results show that the dual HTLS algorithm has the advantages of high robustness and is suitable for rotor bar break fault detection under noise background and short time data.
【作者單位】: 華中科技大學(xué)強(qiáng)電磁工程與新技術(shù)國家重點(diǎn)實(shí)驗(yàn)室;華中科技大學(xué)電氣與電子工程學(xué)院;
【分類號】:TM343
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