A novel leakage-current monitoring method for inverter-fed AC motors

Y Hu, S Cheng, B Chen, J Hu… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
The insulation capacitance is an evaluation criterion for insulation aging, which is calculated
using the common mode voltage and common mode leakage current. Compared to the …

Leakage current sensor and neural network for MOA monitoring

T He, Y Li, Z Zhang, P Shen… - Computational …, 2022 - Wiley Online Library
Metal‐oxide arrester (MOA) has been widely used in electric power systems. The leakage
current monitoring of MOA can not only detect the MOA's running state continuously and …

The online stator winding insulation monitoring for PMSG-PWM rectifier system under various working conditions

D Zheng, G Lu, Y Yang, Q Zhang… - IECON 2021–47th …, 2021 - ieeexplore.ieee.org
The permanent magnet synchronous generator (PMSG) connected to pulse width
modulation (PWM) rectifier is widely used in the renewable energy applications, such as …

An Improved Leakage-current-based Online Monitoring Method of Transformer Insulation by Injecting Asymmetric Voltages at Photovolatic Inverter Switching …

G Lu, J Qu, D Zheng, P Zhang - 2023 26th International …, 2023 - ieeexplore.ieee.org
The leakage current is an effective indictor to evaluate electric asset condition in
photovoltaic (PV) system. The PV-inverter-connected transformer bears large electrical and …

Applications and Prospects of Online Insulation Monitoring Technique Based on Broadband Frequency Response for Transformers in Voltage Source Converter …

G Lu, D Zheng, P Zhang - … Joint Conference on Energy, Electrical and …, 2022 - Springer
Power electronic converters are widely applied in new power system. Converter
transformers have a critical risk in safe and reliable operation due to the insulation ageing …

Leakage current detection method of electrical insulation materials based on windowed-added Fourier transform

Y Zhuang - International Journal of Materials and Product …, 2023 - inderscienceonline.com
In order to effectively solve the disadvantages of low accuracy of leakage feature recognition
and low accuracy of detection results in traditional leakage current detection methods, a …

Online Diagnosis Method of HV Transmission Cable Sheath Fault Based on Current Criterion

K Chen, X Zhou - 2023 6th International Conference on Energy …, 2023 - ieeexplore.ieee.org
In view of the online monitoring and judgment of faults in the cross-connected grounding
system of high-voltage cable sheath, based on the grounding current at both ends of the …

Online Insulation Monitoring and Fault Feeder Selection of Electric Heating Elements

J Yang, T Zeng, J Peng, X Wang - Annual Conference of China …, 2022 - Springer
Nuclear reactor regulator electric heating elements are supplied by the neutral point
ungrounded system, and the long-term high temperature and high current harsh working …

On-line Method for High-sensitivity Leakage Current Measurement of Converter-connected Transformers in Microgrids

G Lu, Y Wu, D Zheng, P Zhang - IECON 2021–47th Annual …, 2021 - ieeexplore.ieee.org
Leakage current is an effective indicator for groundwall (GW) insulation condition of power
transformers. The existing sensing technology based on magnetic shielding design and …

Modeling and Detection of Stator Winding Insulation Degradation in VSI-fed Electric Machines Under High dv/dt

A Patel - 2020 - spectrum.library.concordia.ca
Nowadays, in many advanced applications, for example electric vehicles and aircrafts,
electric motors are being fed by voltage source inverters (VSIs). These inverters generally …