The short rise time observed in the PWM voltages generated by ultrafast wide bandgap devices increases amplitude of voltage harmonics at higher frequencies. These can excite resonances medium-frequency transformers (MFTs), resulting overvoltages inside windings during continuous operation. Without further measures, these lead to unexpectedly high electric fields insulation material, which resul...

A time-domain technique for the solution of arbitrary nonuniform multiconductor transmission lines (NMTL’s) is presented. The technique is based on a weak formulation of the NMTL equations obtained through spatial expansion of the voltage and current vectors into biorthogonal wavelet functions. Wavelets allow adaptive representations of the solution by using few expansion coefficients, with any...

this paper proposes an optimal transmission expansion planning (tep) which is based on determining share of each line in merchandizing surplus (ms) of system, determining by independent system operator (iso). the more share of a line in ms of system denotes the priority of a line for expansion. the procedure of determining ms of each line in a power system is based on determining the ms share o...

This paper presents an analysis approach of multicondcutor quasi-TEM lines transmission interconnect in a single dielectric region and multimode waveguides using the finite element method (FEM). We illustrate that FEM is suitable and effective as other methods for modeling of interconnecting lines in highspeed digital circuits. We mainly focus on designing of five-conductor transmission lines i...

Prediction of the voltage distribution within winding due to pulsewidth modulated impinging at machine terminals is prevalent in literature. For this purpose, state-of-art work employs a high-frequency model stator but fails represent mutual inductive and resistive couplings between turns coil. Herein, article proposes multiconductor transmission line for representing behavior winding. A distin...