Detection of Airgap Eccentricity for Induction Motors Using the Single-Phase Rotation Test
The single-phase rotation test (SPRT) is a simple and reliable offline test frequently used for detecting problems in the rotor cage of induction motors without motor disassembly. Airgap eccentricity due to bearing degradation, shaft flexing, etc., is another problem that is difficult to detect, whi...
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| Veröffentlicht in: | IEEE transactions on energy conversion 2012-09, Vol.27 (3), p.689-696 |
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| creator | Doosoo Hyun Sungho Lee Jongman Hong Sang Bin Lee Nandi, S. |
| description | The single-phase rotation test (SPRT) is a simple and reliable offline test frequently used for detecting problems in the rotor cage of induction motors without motor disassembly. Airgap eccentricity due to bearing degradation, shaft flexing, etc., is another problem that is difficult to detect, which can cause catastrophic motor failure. In this paper, the feasibility of using the SPRT for detecting eccentricity, which has not been reported before, is investigated. The variation in the inductive component as a function of rotor position and time under static, dynamic, and mixed eccentricity conditions is analyzed. It is shown that airgap eccentricity can be detected in addition to rotor cage problems with the SPRT. An experimental study on a 7.5-Hp induction motor under controlled eccentricity and broken bar conditions shows that airgap eccentricity can be reliably detected with high sensitivity and distinguished from broken rotor bars. |
| doi_str_mv | 10.1109/TEC.2012.2198218 |
| format | Article |
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Airgap eccentricity due to bearing degradation, shaft flexing, etc., is another problem that is difficult to detect, which can cause catastrophic motor failure. In this paper, the feasibility of using the SPRT for detecting eccentricity, which has not been reported before, is investigated. The variation in the inductive component as a function of rotor position and time under static, dynamic, and mixed eccentricity conditions is analyzed. It is shown that airgap eccentricity can be detected in addition to rotor cage problems with the SPRT. An experimental study on a 7.5-Hp induction motor under controlled eccentricity and broken bar conditions shows that airgap eccentricity can be reliably detected with high sensitivity and distinguished from broken rotor bars.</description><identifier>ISSN: 0885-8969</identifier><identifier>EISSN: 1558-0059</identifier><identifier>DOI: 10.1109/TEC.2012.2198218</identifier><identifier>CODEN: ITCNE4</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Cage ; Condition monitoring ; eccentricity ; electrical fault detection ; Frequency measurement ; Inductance ; inductance measurement ; Induction motors ; Motors ; preventive maintenance ; Rotors ; spectral analysis ; Stator cores ; Stator windings ; testing</subject><ispartof>IEEE transactions on energy conversion, 2012-09, Vol.27 (3), p.689-696</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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Airgap eccentricity due to bearing degradation, shaft flexing, etc., is another problem that is difficult to detect, which can cause catastrophic motor failure. In this paper, the feasibility of using the SPRT for detecting eccentricity, which has not been reported before, is investigated. The variation in the inductive component as a function of rotor position and time under static, dynamic, and mixed eccentricity conditions is analyzed. It is shown that airgap eccentricity can be detected in addition to rotor cage problems with the SPRT. An experimental study on a 7.5-Hp induction motor under controlled eccentricity and broken bar conditions shows that airgap eccentricity can be reliably detected with high sensitivity and distinguished from broken rotor bars.</description><subject>Cage</subject><subject>Condition monitoring</subject><subject>eccentricity</subject><subject>electrical fault detection</subject><subject>Frequency measurement</subject><subject>Inductance</subject><subject>inductance measurement</subject><subject>Induction motors</subject><subject>Motors</subject><subject>preventive maintenance</subject><subject>Rotors</subject><subject>spectral analysis</subject><subject>Stator cores</subject><subject>Stator windings</subject><subject>testing</subject><issn>0885-8969</issn><issn>1558-0059</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpd0D1PwzAQBmALgUQp7EgsllhYUs6OnThjVQpUKgJBu7BEqXNuU6VxsZ2h_56EIgamu-G5D72EXDMYMQbZ_WI6GXFgfMRZpjhTJ2TApFQRgMxOyQCUkpHKkuycXHi_BWBCcjYgnw8YUIfKNtQaOq7cutjTqdbYBFfpKhyosY7OmrI9ohcbrPN06atmTcMG6UfX1Bi9bQqP9N2G4oct0IdLcmaK2uPVbx2S5eN0MXmO5q9Ps8l4HumYixClidFpkqiVLBWWUpciNqjAqLLIQGuRrbpvRGkyMGkKHBUaKVLNSg084QWLh-TuuHfv7FfbHc53lddY10WDtvU5g1hxyWLV09t_dGtb13Tf9QqEEkyKTsFRaWe9d2jyvat2hTt0KO_Dzruw8z7s_DfsbuTmOFIh4h9POMg4YfE3irl61g</recordid><startdate>20120901</startdate><enddate>20120901</enddate><creator>Doosoo Hyun</creator><creator>Sungho Lee</creator><creator>Jongman Hong</creator><creator>Sang Bin Lee</creator><creator>Nandi, S.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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Airgap eccentricity due to bearing degradation, shaft flexing, etc., is another problem that is difficult to detect, which can cause catastrophic motor failure. In this paper, the feasibility of using the SPRT for detecting eccentricity, which has not been reported before, is investigated. The variation in the inductive component as a function of rotor position and time under static, dynamic, and mixed eccentricity conditions is analyzed. It is shown that airgap eccentricity can be detected in addition to rotor cage problems with the SPRT. An experimental study on a 7.5-Hp induction motor under controlled eccentricity and broken bar conditions shows that airgap eccentricity can be reliably detected with high sensitivity and distinguished from broken rotor bars.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TEC.2012.2198218</doi><tpages>8</tpages></addata></record> |
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| source | IEEE Electronic Library (IEL) |
| subjects | Cage Condition monitoring eccentricity electrical fault detection Frequency measurement Inductance inductance measurement Induction motors Motors preventive maintenance Rotors spectral analysis Stator cores Stator windings testing |
| title | Detection of Airgap Eccentricity for Induction Motors Using the Single-Phase Rotation Test |
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