DC Series Arc Fault Detection with LCL-Type Boost Converter

The damaged and loose connector can induce the DC series arc fault condition. Previously, the frequency domain analysis using PV current, such as Fourier transform and wavelet transform, was widely employed for the series arc fault detection. However, performance of arc fault detection is not consistent according to system configurations. This paper investigates the DC series arc fault capability using the frequency spectrum analysis according to the impedance of power converter. From the characteristics of arc fault condition, the boost converter using LCL-type filter can clarify the arc fault condition in the frequency domain analysis. The experimental results using 800-W prototype converter can verify the frequency spectrum change at the arc fault condition with the proposed converter with LCL-type filter.