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Recently, energy policies have been adopted by various countries around the world to realize a low oxygen society. Attention has been paid to self-sufficient smart home technologies to reduce energy consumption. Power storage devices integrated into photovoltaic power generation devices have been introduced in smart homes. Such power storage devices are mainly used to decrease power peaks and shift...
A massive earthquake has been forecast for Bangladesh in the near future due to its position at the junction of three continental plates. Should it occur, the earthquake is expected to be devastating, particularly in the capital city of Dhaka, due to the large number of high-rise buildings constructed on relatively unstable ground and the high population density of the metropolitan area. In this paper,...
The authors stress the importance of photovoltaic module output difference in mega solar photovoltaic systems. The authors first describe modelling of the various types of the crystalline silicon photovoltaic modules and the maximum tracking point operation of the power conditioning system based on the experimental data. Then, the authors discuss the frequency of reverse current and voltage occurrence...
To investigate the electric-charging characteristics of an insulator under vacuum, a system for measuring the potential distribution on the surface of an insulator under vacuum was developed and used to measure potential distributions on smooth and rough surfaces of several glass plates. The measured potential distributions after surface discharges indicate that compared to discharges on the rough...
Electric vehicles have recently received attention due to the environmental and financial implication. However, they are still not popular because of their inconvenience, limited battery capacities and long recharge times. In order to grow popular of electric vehicles, several studies in the field of optimization have been engaged. One of the studies is routing problem for energy-optimized driving...
In this paper, we construct a nonlinear reduced order model of a plasticization cylinder of injection machines, which has a spatially distributed nonlinear dynamics. First, a distributed parameter model for the overall control system is derived based on the physical laws. Next, we attempt to reduce the model complexity focusing on the specific structure of the nonlinearity which arises from temperature-dependency...
In the present paper, we examined the power exchange in small-scale systems among multiple power flow controllers. The introduction of renewable-energy power generation systems produces new energy business. For example, on-site power generations, and green electric power supply services, such as wind power generation by local companies and local governments, have been proposed in certain areas. Electric...
High-performance systems require high-bandwidth interconnections. The aggregate bandwidth required between two processors, for example, is expected to extend into the terabit-per-second range or higher [1]. Bandwidth is typically the bottleneck in such situations. Optical interconnect technologies have the potential to overcome bandwidth limitations for such chip-to-chip or board-to-board communication...
In this paper, we design a PI controller for an electromagnet placed inside a molding machine. The eddy currents inside the electromagnet are a spatially-distributed phenomenon that is difficult to capture by using finite-dimensional systems. First, we show that the theoretical model, expressed by partial differential equations, cannot perfectly capture the properties of the actual machine. Second,...
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