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Rolling bearings are an important part of wind turbine systems. Shaft current induced damages are one of the main causes for bearing failures, which lead to considerable operation loss of wind turbine plants. In this paper, the characteristics of shaft current damages and their induced vibration responses are studied analytically. Then it suggests to use an emerging Modulation Signal Bispectrum (MSB)...
Bearings have been widely used with the broad application of rotating machines. Hence, in order to increase the efficiency, reliability and safety of rotating machinery, condition monitoring of bearings is significant during the operation. However, due to the influence of high background noise and components slippage, incipient faults are difficult to detect. With the continuous research on the bearing...
Motor current signature analysis (MCSA) is a common practice in industry for finding motor faults. However, because of small modulations caused by faults and high noise contamination, it is difficult to quantify the modulation in measured signals which is dominated by the supply frequency, higher order harmonics and noise. In this paper a modulation signal bispectrum (MSB) is investigated to detect...
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