TY - GEN
T1 - Impulse Voltage-based Test Method for Identifying the Stator Insulation Component with PD Activity for Low Voltage AC Motors
AU - Lee, Sang Bin
AU - Naeini, Alireza
AU - Jayaram, Shesha
AU - Stone, Greg C.
AU - Sasic, Mladen
N1 - Publisher Copyright:
© 2019 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019/6
Y1 - 2019/6
N2 - IEC 60034-18-41 has been developed as a standard acceptance test to ensure partial discharge (PD)-free operation for improving the reliability of low voltage (LV) variable frequency drive (VFD) motors. Although the test can verify whether PD exists in the stator for a voltage surge with predetermined magnitude and risetime, the information on where PD activity is occurring in the stator insulation is not clearly given. In this paper, a method based on variable risetime surge voltage testing is proposed for identifying the component of the stator insulation system where PD occurs in LV random wound motor stators (turn, phase, or ground insulation). This information can be used for increasing the PD inception voltage for improving the reliability of the motor through insulation system design/manufacturing. The test is implemented with a 4.5 kV variable risetime surge generator prototype. 4 LV ac motors are tested to show where PD is likely to occur in commercial LV motors.
AB - IEC 60034-18-41 has been developed as a standard acceptance test to ensure partial discharge (PD)-free operation for improving the reliability of low voltage (LV) variable frequency drive (VFD) motors. Although the test can verify whether PD exists in the stator for a voltage surge with predetermined magnitude and risetime, the information on where PD activity is occurring in the stator insulation is not clearly given. In this paper, a method based on variable risetime surge voltage testing is proposed for identifying the component of the stator insulation system where PD occurs in LV random wound motor stators (turn, phase, or ground insulation). This information can be used for increasing the PD inception voltage for improving the reliability of the motor through insulation system design/manufacturing. The test is implemented with a 4.5 kV variable risetime surge generator prototype. 4 LV ac motors are tested to show where PD is likely to occur in commercial LV motors.
KW - impulse testing
KW - partial discharge (PD)
KW - surges
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U2 - 10.1109/EIC43217.2019.9046584
DO - 10.1109/EIC43217.2019.9046584
M3 - Conference contribution
AN - SCOPUS:85083495909
T3 - 2019 IEEE Electrical Insulation Conference, EIC 2019
SP - 392
EP - 395
BT - 2019 IEEE Electrical Insulation Conference, EIC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE Electrical Insulation Conference, EIC 2019
Y2 - 16 June 2019 through 19 June 2019
ER -