TY - GEN
T1 - An on-line groundwall and phase to phase insulation quality assessment technique for AC machine stator windings
AU - Lee, Sang Bin
AU - Yang, Jinkyu
AU - Younsi, Karim
AU - Bharadwaj, Raj
PY - 2005
Y1 - 2005
N2 - An on-line technique for monitoring the condition of groundwall (GW) and phase-to-phase (PP) insulation for 3 phase AC machine stator windings is proposed in this paper. Insulation condition indicators such as capacitance, dissipation factor (tanδ), and AC insulation resistance are calculated on-line based on the differential leakage current measurements for each phase. A model for a 3 phase AC machine insulation system is derived and analyzed for both off-line and on-line testing. Guidelines for interpreting the measured indicators for determining the 1) overall condition and 2) significant degradation for the individual GW and PP insulation for each phase of the stator are given based on the analysis. Experimental results on a 15hp induction motor under intentional GW and PP insulation degradation conditions show that incipient insulation degradation can be detected and classified with high sensitivity.
AB - An on-line technique for monitoring the condition of groundwall (GW) and phase-to-phase (PP) insulation for 3 phase AC machine stator windings is proposed in this paper. Insulation condition indicators such as capacitance, dissipation factor (tanδ), and AC insulation resistance are calculated on-line based on the differential leakage current measurements for each phase. A model for a 3 phase AC machine insulation system is derived and analyzed for both off-line and on-line testing. Guidelines for interpreting the measured indicators for determining the 1) overall condition and 2) significant degradation for the individual GW and PP insulation for each phase of the stator are given based on the analysis. Experimental results on a 15hp induction motor under intentional GW and PP insulation degradation conditions show that incipient insulation degradation can be detected and classified with high sensitivity.
KW - AC machines
KW - Capacitance
KW - Dissipation factor
KW - Fault diagnosis
KW - Groundwall insulation
KW - Insulation resistance
KW - Insulation testing
KW - On-line condition monitoring
KW - Phase to phase insulation
UR - http://www.scopus.com/inward/record.url?scp=33745916140&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33745916140&partnerID=8YFLogxK
U2 - 10.1109/IAS.2005.1518285
DO - 10.1109/IAS.2005.1518285
M3 - Conference contribution
AN - SCOPUS:33745916140
SN - 0780392086
SN - 9780780392083
T3 - Conference Record - IAS Annual Meeting (IEEE Industry Applications Society)
SP - 10
EP - 19
BT - Conference Record of the 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting
T2 - 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting
Y2 - 2 October 2005 through 6 October 2005
ER -