In this paper, we propose an analysis of the structure and functioning in the Pspice simulation and experiment of a discretized photovoltaic (PV) system. This system is formed by two DC/DC Boost converter connected in series. Its role is to transfer electrical energy from two PV generators through two adaptation stages (upper and lower stages). We proposed a circuit control of the power switch ...

We use macroscopic holes drilled in a bulk YBCO superconductor to probe its magnetic properties in the volume of the sample. The sample is subjected to an AC magnetic flux with a density ranging from 30 mT to 130 mT and the flux in the superconductor is probed by miniature coils inserted in the holes. In a given hole, three different penetration regimes can be observed: (i) the shielded regime,...

III-V semiconductor multiquantum-well (mqw) photovoltaic devices show improved collection and transport properties when they are selectively doped. Existence of multiple quantum wells is of advantage because of (a) easier carrier collection (b) photocarrier separation (electrons vs holes) that reduces recombination and (c) of Fermi level shifting. The latter is of real advantage when the Fermi ...

The paper focuses on the impact grid-connected, largescale photovoltaic (PV) has on the power system operation (stability, availability, reliability) and protection philosophy. It assesses qualification methods and standards of particularly the utility-interactive equipment (grid inverters), which directly influences the security of supply and power quality of the grid. Advanced emulation of gr...

Tungsten diselenide (WSe2), a semiconducting transition metal dichalcogenide (TMDC), shows great potential as active material in optoelectronic devices due to its ambipolarity and direct bandgap in its single-layer form. Recently, different groups have exploited the ambipolarity of WSe2 to realize electrically tunable PN junctions, demonstrating its potential for digital electronics and solar c...

cesses in photochemical behaviours o f the dye. Th e observed photopotential in aqueous acriflavine solution is positive or negative against the dark electrode, depending on pH . The positive sign implys that the photoreduction of dye is more predominant than the photooxidation. The negative sign is obtained when the photooxidation is the predominant reaction. Using the electrode coated directl...

This paper documents the effect that the PI controller gains in the generic WECC photovoltaic power plant have on the system modes.

the increase of cell temperature with increased irradiance is probably the mostsignificant disadvantage of using photovoltaic modules equipped with booster reflectors. the aimof this study is to investigate the possibility of improving the performance of a photovoltaic waterpumping system by using a booster reflector and to keep the temperature of pv panels at a lowlevel by cooling pv panels wi...

This work studies the magneto conductance (MC) responses of regioregular poly(3-hexylthiophene) (P3HT)-based polymer photovoltaic devices. The net MC results of devices are the sum of the positive and negative MC effects. The positive MC effect is due to the increased population of the singlet polaron-pair (PP) states (of the high dissociation rate to charge carriers) under the magnetic field. ...