Published in Journal of Physics: Conference Series
Modern measurement modules are extremely demanding on the hardware and must accurately capture the relevant parameters of capacitance and inductance. The inductance and its quality factor, capacitance and its loss angle tangent value are very important parameters, but also the current testing difficulties. To efficiently and accurately measure the ...
This tutorial focuses on the problem of the experimental measurement of the mutual inductance (or, equivalently, of the coupling factor) of two coupled coils designed for a Wireless Power Transfer (WPT) system. Although many instruments and techniques are available for this purpose, in the literature, no clear guidelines defining the most reliable ...
An equivalent circuit to reproduce the skin effect behavior in an arbitrary structure modeled as resistance-inductance has been developed modifying the Foster model. Taking the values of inductance and resistance in the frequency domain directly from electromagnetic analysis obtained by commercial software, the proposed model allows to implement an...
status: published
Tato diplomová práce se zabývá měřením indukčnosti a saturačního proudu cívek. V práci je navržen a realizován přípravek, který slouží k provoznímu měření cívek pro spínané zdroje impulsní metodou. Přípravek využívá vytvořený algoritmus automatického výpočtu saturačního proudu z měření časového průběhu proudu cívkou. V práci je dále provedeno ověřo...
SiC MOSFET is mainly characterized by the higher electric breakdown field, higher thermal conductivity, and lower switching loss enabling high breakdown voltage, high-temperature operation, and high switching frequency. However, their performances are considerably limited by the high parasitic inductance and poor heat dissipation capabilities assoc...
This article presents a parameter recognition-based impedance tuning method for the impedance mismatch caused by capacitance drift and coil misalignment in series-series-compensated wireless power transfer (WPT) systems. First, a parameter recognition method is proposed to identify the unknown parameters of the resonant circuits by only measuring t...
To achieve a high performance in sub-module power conditioning circuits, it is important that power converters are designed in accordance with the photovoltaic (PV) cell impedance at the input. Taking this one step further, exploiting the impedance of cell strings could even support novel power conditioning approaches in PV modules. In this work, w...
An interturn short-circuit in the stator windings can lead to the breakdown of electrical machines. In the case of induction machines, several fault detection methods and faulted models have been developed in the recent decades. These models differ mainly in how the leakage inductances of the faulted winding are modeled. This work provides a genera...
A novel technique to accurately characterize interconnects with general, piecewise homogeneous material parameters and arbitrary polygonal cross sections is presented. To compute the per-unit-of-length (p.u.l.) complex inductance and capacitance matrices of the considered structures, we apply a boundary integral equation (BIE) framework, invoking a...
