TY - GEN
T1 - Challenges of Common Mode Current and Voltage Acquisition for Stator Winding Insulation Health Monitoring
AU - Alvarez-Gonzalez, Fernando
AU - Hewitt, David
AU - Griffo, Antonio
AU - Wang, Jiabin
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/10/11
Y1 - 2020/10/11
N2 - Tracking of changes in common mode impedance has been employed for monitoring of insulation state of health in electrical machines. The insulation to ground equivalent capacitance and resistance may be derived from common mode impedance and phase angle, which, in turn, can be measured online, in an inverter-driven machine from common mode currents (CMC) and voltages (CMV). However, challenges regarding the behavior, location and acquisition method of CMC and CMV, have not been studied with sufficient detail up to date. In this paper, these conditions are analyzed in details, focusing in particular, on location of measurement, choice of sensor, limitations to bandwidth or variations due to operating conditions. Previous research has demonstrated good performance with slow switching Si-based converters. This paper, presents comprehensive experimental results employing a machine fed by a SiC inverter without output filter. It is demonstrated that the fast dv/dt transients and high switching frequency of SiC converters results in more demanding requirements for data acquisition.
AB - Tracking of changes in common mode impedance has been employed for monitoring of insulation state of health in electrical machines. The insulation to ground equivalent capacitance and resistance may be derived from common mode impedance and phase angle, which, in turn, can be measured online, in an inverter-driven machine from common mode currents (CMC) and voltages (CMV). However, challenges regarding the behavior, location and acquisition method of CMC and CMV, have not been studied with sufficient detail up to date. In this paper, these conditions are analyzed in details, focusing in particular, on location of measurement, choice of sensor, limitations to bandwidth or variations due to operating conditions. Previous research has demonstrated good performance with slow switching Si-based converters. This paper, presents comprehensive experimental results employing a machine fed by a SiC inverter without output filter. It is demonstrated that the fast dv/dt transients and high switching frequency of SiC converters results in more demanding requirements for data acquisition.
KW - SiC
KW - common mode
KW - condition monitoring
KW - current sensors
KW - frequency compensation
UR - https://www.scopus.com/pages/publications/85097125710
U2 - 10.1109/ECCE44975.2020.9235717
DO - 10.1109/ECCE44975.2020.9235717
M3 - Conference contribution
AN - SCOPUS:85097125710
T3 - ECCE 2020 - IEEE Energy Conversion Congress and Exposition
SP - 4452
EP - 4459
BT - ECCE 2020 - IEEE Energy Conversion Congress and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020
Y2 - 11 October 2020 through 15 October 2020
ER -