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Increasing the energy self-consumption rate is an important challenge for economic improvement in a grid parity environment. Here, the construction of a power supply system that combines solar power generation and a storage battery system is detailed and the increase in the renewable energy self-consumption rate obtained by optimizing the charging and discharging of the storage battery is reported.
We developed and field-tested an electric vehicle quick charger (EVQC) with storage battery to suppress the lengthening of charging time while preventing a rise in a building's peak power usage caused by EV charging. This EVQC features a demand control technique that determines the amount of power to be used by the charger according to the amount of power used by the building. In addition, charging...
The gallium oxide thin films with amorphous, crystalline, and nanostructure morphologies were deposited by a radio frequency magnetron sputtering system in ultra high vacuum conditions. High resolution X-ray photoelectron spectroscopy spectra of films were analyzed relating on the preparation conditions. On the amorphous films, the density of states at valence band region is dependent on the sputtering...
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