نتایج جستجو برای: grid system

تعداد نتایج: 2285670  

This paper presents nonlinear frequency control characteristic for a dispatchable source to reduce fuel consumption in a standalone AC power system. Power management used in grid is local. The proposed frequency characteristics that are employed for the sources are designed based on grid model. To have robust frequency control characteristics, uncertainty in grid model that consists of load mod...

In this paper, photovoltaic (PV) grid-connected inverter which is the core device in PV grid-connected system has been in depth research.An improved predictive current controller has been developed by the Authors for single-phase grid-connected voltage source inverters (VSI).Based on DSP TMS320LF2407A, a 10 kW single-phase grid-connected inverter has been built in this paper.Thus is aimed at us...

Journal: :Journal of Physics: Conference Series 2011

Journal: :iranian journal of medical physics 0
seyed mahdi safavi m.sc. in nuclear engineering, faculty of nuclear engineering, shahid beheshti university, tehran, iran. hamid jafari m.sc. in nuclear engineering, faculty of nuclear engineering, shahid beheshti university, tehran, iran. alireza kamali asl assistant professor of radiation medical engineering., shahid beheshti university, tehran, iran. majid shahreyari professor, nuclear engineering dept, shahid beheshti university, tehran, iran.

introduction: radiation imaging is one of the applicable methods in diagnostic medicine and nondestructive testing for industrial applications. in nondestructive 3d imaging, in addition to the radiation source, there is a requirement for a suitable detection system, data acquisition system, mechanical sections for moving objects, reconstruction algorithm and finally a computer for processing an...

A power system is a nonlinear one. When turbulence occurs in the power system, the stability of the system depends on the initial operating conditions and the nature of the turbulence. Nowadays renewable energy sources including photovoltaic have a key role to meet high demand of modern societies and to maintain voltage of the buses, while they also provide clean electrical energy. However, inc...

Smart grid concept is introduced to modify the power grid by utilizing new information and communication technology. Smart grid needs live power consumption monitoring to provide required services and for this issue, bi-directional communication is essential. Security and privacy are the most important requirements that should be provided in the communication. Because of the complex design of s...

Electrification to rural and remote areas with limited or no access to grid connection is one of the most challenging issues in developing countries like Iran. Most of electricity  demand is met by diesel generators in Iran remote areas, although they create environmental problems and economic concern. These issues can be minimized by hybrid renewable energy systems. This research paper aims at...

The development of communications and telecommunications infrastructure, followed by the extension of a new generation of smart distribution grids, has brought real-time control of distribution systems to electrical industry professionals’ attention. Also, the increasing use of distributed generation (DG) resources and the need for participation in the system voltage control, which is possible ...

Journal: :Research Journal of Applied Sciences, Engineering and Technology 2013

Grid computing is a term referring to the combination of computer resources from multiple administrative domains to reach a common computational platform. Mobile Computing is a Generic word that introduces using of movable, handheld devices with wireless communication, for processing data. Mobile Computing focused on providing access to data, information, services and communications anywhere an...

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