When charging electric vehicles,some problems are usually encountered,such as the weak connection of high-voltage lines and the aging and damage of line insulation.These problems often lead to arc failures,which seriously threaten the safety of the charging line.Therefore,this paper proposes research on the tandem arc fault detection method of new energy vehicles based on improved singular value decomposition,which aims to quickly and accurately detect arc faults in the electrical system of electric vehicles.In this study,an experimental platform for fault arcing of electric vehicles was built,and the time series of trunk circuit currents under different working conditions were collected and a sample library was established.A second-order RC model is constructed by using an equivalent circuit model for a series lithium-ion battery system.Finally,the accuracy of the model was verified by simulation analysis.
关键词
改进奇异值分解/故障检测/新能源汽车/串联型电弧
Key words
Improved Singular Value Decomposition/Fault Detection/New Energy Vehicles/Tandem Arc
维普
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