A Sample Space–Frequency Iterative Time-Inversion Method for Calculating Near Radiated Emission of Flat Cable With High-Voltage Pulse

Abstract

This article proposes a small sample space–frequency iterative time-inversion approach for solving the issue of near radiated emission generated by a flat cable with high-voltage pulse (HVP) excitation. First, the radiation problems of HVP system are discussed and the propagation mechanism of the radiation field in the range of several hundred millimeters is investigated. Then, the distributed current and voltage along the flat cable is obtained by the finite-difference time-domain (FDTD) method. On this basis, the theoretical process of time-inversion method with small sample space–frequency iterative in detail is presented. Finally, an experimental measurement is conducted to obtain the radiated <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$E$ </tex-math></inline-formula> -field at some random positions around the flat cable with the same pulse excitation source. The comparative results in good agreement give a validation for the approach proposed. Besides, by considering the superposition of the radiation field around the arbitrarily curved flat cable, the addressed technique simplifies the modeling process significantly and possesses better efficiency compared to traditional simulation methods.