Abstract
Conference Title: 2018 IEEE Applied Power Electronics Conference and Exposition (APEC) Conference Start Date: 2018, March 4 Conference End Date: 2018, March 8 Conference Location: San Antonio, TX, USA In this paper, an improved adaptive method for dc arc faults detection is proposed based on current envelope and Hurst exponents. The method is developed to be used in dc electrical distribution systems (EDS) including PV systems, DC micro-grids, and 48 V mild hybrid electric vehicles. The proposed method is shown to be effective in arc detection and immune to switching harmonics, high di/dt transients, sudden load changes, and noisy load profiles. A test setup is built and several hundred dc arcs were generated under different operation conditions including air gap, current, and various electrode thicknesses.