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This paper studies a photovoltaic (PV)-module-embedded power-electronics topology derived from a battery equalizer. The proposed topology eliminates the multiple maximum power point peaks common to partial shading in PV modules. The topology does so by equalizing the overall energy of the PV module through the use of only one inductive storage element. A theoretical study is carried out to describe...
The cold plasma type electrochemical reactors are more often used for different applications such air or solutions decontamination, surfaces treatment and in some cases for bio-decontamination or even sterilization [1]. In the last decade, in the medicine field, several applications have been developed which assure bio-compatibility of the implant materials or even are used to treat living tissues...
This article discusses 3 types of class I test current generators specified by technical standard IEC61643–11, interpreted their respective circuit principles, voltage and current waveforms and circuit parameter calculation. Comparison is also made in this article with respect to positive and negative characteristics of the 3 circuits, humble proposals toward current tolerances by the standard is...
A familiar technique for shortening the length of discharge from a capacitor in a pulsed power circuit involves a combination of opening and closing switches. Lengthening the pulse normally involves using a number of relatively small capacitors, interconnected through inductors, with the resulting arrangement often being complex. The paper describes how using a capacitor as the energy source, it is...
Electric Vehicles (EVs) are being shown as a global solution in the path for reducing the carbon dioxide emissions and the avoidance of petrol energy problems. Actually, the Energy Storage Systems available are the great obstacle to a faster entrance of the EVs in the market. In fact, EVs applications need sources with high specific energy and high specific power, and currently, there are no available...
Positive wire-to-cylinder corona discharge in pure CO2 has been simulated using a model that includes elementary plasma processes (ionization, electron attachment and detachment, ion recombination, etc.) and chemical reactions between neutral species. The plasma chemistry model is included in the continuity equations of species, which are coupled with Poissons equation for the electric field and the...
The effect of RF discharge structure on silicon etching process in CF4/O2 mixture was studied. The calculations were carried out based on an advanced mathematical model of plasma-chemical reactor with taking into account a peculiarities of RF discharge plasma. The model includes the equations of multicomponent physical-chemical hydrodynamics describing convective-diffusion transfer and production...
The paper refers to the optimal operation of GlidArc type cold plasma plane-symmetrical electrochemical reactors with auxiliary electrodes and proposes the correct definition for the position of the auxiliary electrodes when designing the device. This proposes considering the capacities that characterize the ignition and distribution of the pilot electrical discharge between the E1 - A1 - A2 - E2...
A new three-phase ac-dc single-stage PWM full-bridge converter is proposed in the paper. The converter can simultaneously perform input power factor correction and isolated dc-dc conversion, operate using standard phase-shift PWM control, and is simple and low cost. In the paper, the operation of the new converter is explained and analyzed, its design is discussed, and experimental results that confirm...
This paper presents the family of the single-inductor multi-output DC-DC converters. Conventional transformer-based multi-output DC-DC converters are proposed to provide multiple output voltages, which, however, have the drawbacks of high cost and large volume. Therefore, the single-inductor multi-output three-terminal configuration is developed in order to reduce the component count and cost for...
This paper presents a new topology based on a Positive Buck-Boost converter with multi output (MOPBB). A single output positive Buck-Boost converter consists of a Buck and Boost converters in cascade which can be controlled against input voltage fluctuation and load changes. In this paper, the steady state and dynamic analyses of the proposed topology are presented along with simulation results. A...
Plasma-exposed Si surface related to Si recess in source/drain region was investigated in detail for various superposed bias configurations with frequencies of 13.56 MHz and 400 kHz. Two different bias powers were utilized by an inductively coupled plasma reactor (ICP). The surface layer (SL) and the interfacial layer between the SL and Si substrate (IL) were analyzed by spectroscopic ellipsometry...
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