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Regarding modeling of battery system, if the properties of unit cells comprising the system are different, overall battery system model based on a specific cell may cause an error due to the differences in cell properties. In this paper, the statistical method to minimize the error according to the deviation of properties of unit cells comprising the battery module is proposed. The simulation result...
The effectiveness of two patterns for operating a self-sufficient (i.e., smart) microgrid was investigated. One pattern minimizes connection time to the utility power grid, and the other minimizes the peak load drawn from the utility power grid and maximizes battery life. Field testing of a demonstration system showed that it can switch between modes (island, charge, and backup) and continue to supply...
Fuel cell has a lot of advantages like zero emission, high efficiency, little noise, and extremely low vibration. So, it is considered as a suitable alternative source for the portable power supply. However, it needs to be made up for the weak points such as high cost and slow dynamic response. As a representative useful solution to remedy fuel cell's shortcomings, battery is being utilized in various...
Since the Great East Japan Earthquake, many people have been worried about power shortages in Japan. There has been more focuses to the save electricity at home. A method is very important that can reduce the energy requipment without any trouble to the home peopole. The spread of PV (Photovoltaic) will be expanded by the surplus power buyback institution, and Smart House with HEMS is expected to...
In recent years, amount of renewable energy facilities using wind turbine generator and photovoltaic power system have been increased due to natural environment and resource depletion. Moreover, all electrification apartment houses or residences and electric vehicles have been increased. However, due to the fluctuating power from renewable energy sources and loads, fluctuations of grid frequency and...
In this paper, the potentials, peculiarities and prospects of solar power generation system to the platform roofs of the railway station will be discussed. Based on the rough estimation, the total potential of our company for platform roof PV system is amount to be more than 100MW. While the railway premises have such a high potential for solar power introduction, they have also difficulties compared...
Abundance sunlight ray in Malaysia makes it perfect to be used with the current alternative green vehicle technology: the Light Electric Vehicles (LEVs). LEV is powered by battery packs, which can be rechargeable by any external source of electricity. Hence, it is one of the targets of this study to examine the reliability of such solar fuel station. As green alone is not enough to be the purchasing...
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