As a result of the depletion of fossil fuels and environmental contamination, it has become important to use renewable energy. For the stable utilization of renewable energy sources, energy storage devices must be used. In addition, renewable and distributed power sources with energy storage devices must operate stably under grid-connected mode. This paper proposed dynamic response modeling for renewable power generation systems including a charger/discharger with an energy storage device in order to derive a method to guarantee stable operation while fully utilizing the energy from the energy storage device. In this paper, the principle operation and design guidelines of the proposed scheme are presented, along with a performance analysis and simulation results using MATLAB and PSIM. Finally, a hardware prototype of a 1kW power conditioning system with an energy storage device has been implemented for experimental verification of the proposed converter system.

We investigated the effectiveness of using argon gas with added nitrogen when filling deep sub-mm through-holes with copper by high-vacuum planar magnetron sputtering, and we examined the optimum amount of added nitrogen. This is done by varying the amount of added nitrogen between 0.5, 1.0, 3.0, 10, and 20 at. % in copper filling experiments conducted at a substrate temperature of 280 C and a gas pressure of p ¼ 9:0 Â 10 À2 Pa with 80-nm-diameter holes having an aspect ratio of 5.6. The results show that the optimal amount of added nitrogen for copper filling is 1.0 at. %, and that the proportion of conformal filling is 1/5. The reasons for this are discussed in terms of the energy relationship between copper atoms adsorbed physically or chemically by nitrogen, sputtered atoms, and recoil atoms or molecules.

We have developed 42 inch WVGA AC PDP making use of new address sustain overlapping driving scheme. We have removed extra priming discharge and optimized addressing sequence for each sub-fields to make good use of space charge. As a result, we can obtain full area driving margin, impress 1920 pulses of sustain and get absolutely black of back screen.

A novel high power light-emitting diode lamp driving technology that uses a reverse charge pump circuit and digital dimming method instead of a conventional DC-DC converter is proposed to obtain a high circuit efficiency at all dimming levels. In this method, the voltages of all capacitors are kept constant by the period in which the capacitors are connected in parallel. From the experimental results, the circuit efficiency was kept constant irrespective of the dimming level and lighting condition. In addition, an average circuit efficiency of 91.8% was obtained when all of the light-emitting diode lamps were turned on at the same dimming level.

We derive the phase error of a hologram that is due to the imperfection of a wave plate, the azimuth angle error of a wave plate, and the azimuth angle error of a linear polarizer and analyze the effect of the phase error with a modified triangular interferometer of the three-dimensional image reconstruction of a hologram.