on-line condition monitoring of motors using ... - AREVA NP Inc.
on-line condition monitoring of motors using ... - AREVA NP Inc.
on-line condition monitoring of motors using ... - AREVA NP Inc.
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How does signature analysis work<br />
• The frequency spectrum enables us to see all the harm<strong>on</strong>ic<br />
comp<strong>on</strong>ents <strong>of</strong> V & I<br />
• All electrical & mechanical faults change the flux distributi<strong>on</strong> inside<br />
the motor & hence generate harm<strong>on</strong>ics in the current<br />
• Superimposing the current & voltage spectra enables us to distinguish<br />
between the supply harm<strong>on</strong>ics & the fault harm<strong>on</strong>ics<br />
• The harm<strong>on</strong>ics generated by each fault will be different<br />
• Thus, studying the distributi<strong>on</strong> <strong>of</strong> these fault harm<strong>on</strong>ics enables<br />
identificati<strong>on</strong> <strong>of</strong> the fault<br />
Diagnostic Technologies India Pvt. Ltd.
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