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multi-conductor-transmission-line-model
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Modeling of partial discharge in transformer winding by multi-conductor transmission line model
, Article International Review of Electrical Engineering ; Volume 7, Issue 2 , 2012 , Pages 3926-3934 ; 18276660 (ISSN) ; Vakilian, M ; Ghaffarian Niasar, M ; Sharif University of Technology
Praise Worthy Prize
2012
Abstract
To locate accurately the occurrence of a partial discharge in a power transformer winding, a wide frequency band model of the winding is required. In this paper a wide frequency band Multi Conductor Transmission Line model (MTL) is employed to simulate the propagation of PD signal in transformer windings. The MTL model is briefly reviewed and the related equations of the model are reformulated to easily simulate occurrence of a PD signal along the winding. Software is developed in Matlab to calculate the windings resonance frequencies and the magnitudes of over-voltages occurring between different disks along the winding. Then propagation of PD signal in a power transformer (900MVA, 525kV),...
Compact closed form model for skin and proximity effect in multiwall carbon nanotube bundles as GSI interconnects
, Article IEEE Transactions on Electron Devices ; Vol. 61, issue. 8 , July , 2014 , p. 2899-2904 ; Sarvari, R ; Sharif University of Technology
Abstract
Closed form model for skin and proximity effect is necessary for GSI interconnects. In this paper, exact formulation for current distribution inside multiwall carbon nanotube (MWCNT) bundles is derived using multiconductor transmission line model. The current distribution is different from copper wires and it is geometry dependent because of kinetic inductance and quantum capacitance. This current distribution is used to compute and formulate high frequency resistance of MWCNT bundles
Multi-conductor transmission line networks in analysis of side-coupled metal-insulator-metal plasmonic structures
, Article Optics Communications ; Vol. 313, issue , 2014 , pp. 375-381 ; ISSN: 00304018 ; Bahadori, M ; Rezaei, M ; Khavasi, A ; Hodaei, H ; Mehrany, K ; Sharif University of Technology
Abstract
An approximate and accurate enough multi-conductor transmission line model is developed for analysis of side-coupled metal-insulator-metal (MIM) waveguides. MIM waveguides have been already modeled by single conductor transmission lines. Here, the side coupling effects that exist between neighboring plasmonic structures are taken into account by finding appropriate values for distributed mutual inductance and mutual capacitance between every two neighboring conductors in the conventional single-conductor transmission line models. In this manner, multi-conductor transmission line models are introduced. Closed-form expressions are given for the transmission and reflection of miscellaneous MIM...