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2012, The Journal of The Institute of Electrical Engineers of Japan
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4 pages
1 file
IEICE technical report. Internet Architecture, 2012
According to 2011 Thoku earthquake and tsunami, electricity conservation by households has been necessary because of their growth of consumption in Japan. To promote their conservation behavior, visualizing the amount of electric consumption at real-time using the Internet is one of solutions. In this paper, we implemented a monitoring system visualizing real-time electricity power use for households. This system has two functions. One of them is to acquire real-time electricity power usage and store them into a database. The other is to display real-time electricity power usage by a graph into personal web pages for each household. To clarify its reliability, we analized it by the stored data and impression of use by participants, 4 households. As a result, reliability of this system could be found. 1. は じ め に
The transactions of the Institute of Electrical Engineers of Japan.A, 2011
IEEJ Transactions on Power and Energy, 2005
Wind turbine generators and PV system generate fluctuating power condition. Therefore, the fluctuating power causes frequency and voltage fluctuations. To solve this problem, we propose a new power supply system with using renewable energy in isolated island. The feature of this system is to use an aqua electrolyzer and fuel cell. The operation of suggested system absorbs fluctuating power of renewable energy. Furthermore, the proposed system is able to generate reactive power and active power with using three-phase inverter. The effectiveness of the proposed power supply system is shown through simulation results in this paper.
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Hokuriku Shin'etsu Shibu Sokai, koenkai koen ronbunshu, 2005
Hokuriku Shin'etsu Shibu Sokai, koenkai koen ronbunshu, 2009
Hyōmen kagaku, 2007
By applying Scanning Nonlinear Dielectric Microscopy (SNDM), we succeeded in clarifying the position of the electrons holes in the gate SiO2-Si3N4-SiO2 (ONO) film of the Metal-ONO-Semiconductor type flash memories, After the write-erase cycling operation,the electrons were found in the Si3N4 part of the ONO film. The holes,on the other hand, were found in the Si3N4 film as well as at the bottom of the SiO2 film. This indicates that the electrons and holes are apparently neutralized but exist separately. We also succeeded in clarifying that electrons exist in the poly-Si layer of the floating gate of a flash memory. We confirmed that SNDM is one of the most useful methods for observing the charge in flash memories.
The transactions of the Institute of Electrical Engineers of Japan.A, 2003
Turn-on characteristics of semiconductor power devices are evaluated under external magnetic field to study the effects of external magnetic field generated in a pulsed power circuit. Two pin diodes that have a basic structure of power devices are connected in parallel and driven by a pulsed voltage source. It was found the magnetic field applied to one diode in the perpendicular direction of current-flow changed the current balance between the diodes. Besides the on-resistance of a diode was increased under external magnetic field. The carrier-density distribution inside of the diodes was measured by using a free carrier absorption method. The data show that the carrier-density distribution changes from nearly the uniform one to the one-sided one. It can be concluded that the effects of magnetic-field have to be considered for the evaluation of switching characteristic in pulsed power operations.
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