Identification of Lightning Overvoltage in Unmanned Aerial Vehicles

Abstract

This paper presents research on the model developed in the Matlab environment for simulating effects of overvoltage in an unmanned aerial vehicle (UAV) upon lightning discharge. They are based on transmittance obtained from voltage surge impulse measured in drone circuits. Overvoltage waveforms were measured at the input and output of different parts of the machine. It was then possible to calculate the transmittance of those (chosen) circuits. The motors, supply system, communication lines, and sensors were primarily tested. Both positive and negative polarization of the surge pulse were used and compared. The shape of pulse, is standardized by international norms for avionics tests (RTCA DO-160). The special surge generators were used to prepare the same repetition of each pulse (for all measurements). The simplified model of surge pulses propagation in drone circuits was prepared in Matlab. The differential between direct and step-by-step paths of pulse propagation in some connected circuits were also compared.

UAS-Guided Analysis of Electric and Magnetic Field Distribution in High-Voltage Transmission Lines (Tx) and Multi-Stage Hybrid Machine Learning Models for Battery Drain Estimation

“…High voltage direct current (HVDC) Tx lines and high voltage alternating current (HVAC) lines with potential exceeding 69kV AC emit high intensity E/H fields, with interference effects scaling nonlinearly with proximity [3]- [6]. Particularly, studies have empirically shown that E/H field strengths above 3-5kV/m can materially impact UAV orientation sensors and flight control response [7].…”