نتایج جستجو برای: electric distribution system
تعداد نتایج: 2829617 فیلتر نتایج به سال:
in this paper, the stability of a functionally graded magneto-electro-elastic (fg-mee) micro-beam under actuation of electrostatic pressure is studied. for this purpose euler-bernoulli beam theory and constitutive relations for magneto-electro-elastic (mee) materials have been used. we have supposed that material properties vary exponentially along the thickness direction of the micro-beam. gov...
Increasing the demand for electric vehicles, makes the manufactures to concentrate on the research of new energy storage devices, electro motors, and power electronic devices. The main subject in designing an electric motorcycle with four-phase AFPM and its full wave converter is to select suitable energy storage system and add on turbo-acceleration mechanism. Choosing the suitable energy stora...
In this paper a three dimensional thermal model of a sliding contact system is proposed for both steady-state or transient conditions. The influence of contact force, electric current and ambient temperature on the temperature distribution, has been investigated. A thermal analysis of the different type of the graphite material of fixed electric contact and its influence on contact system tempe...
All-Electric power and propulsion system architectures have been investigated in order to demonstrate the feasibility of such an approach to increase the endurance of a high altitude long endurance UAV to a target mission duration of 1 week. System modelling studies demonstrate the possibility of utilising combined fuel cell and photo-voltaic systems as power sources for an electric distributio...
electric power industry have always try to provide reliable electricity to customers and at the same time decrease system costs. high voltage circuit-breakers are an essential part of the power network. this study has developed a maintenance and replacement scheduling model for high voltage circuit- breakers that minimize maintenance costs while maintaining the acceptable reliability. this mode...
The renewable energy sources and plug-in electric vehicles (PEVs) are becoming very popular because of the combination of high fuel costs and concerns about emission issues. This paper presents modelling and control of a Building Integrated Fuel Cell and Plug-in Electric Vehicles (BIFC-PEV) in smart distribution systems. In BIFC-PEV system, conventional building elements could be replaced by sp...
پژوهش حاضر به بررسی رابطه بین تسهیم دانش و چابکی سازمانی در شرکت توزیع برق استان اصفهان پرداخته است . ابزار سنجش در این پژوهش پرسشنامه می باشد . به منظور سنجش متغیر تسهیم دانش از پرسشنامه وانگ و وانگ و جهت سنجش چابکی سازمانی از پرسشنامه چاربونیر استفاده شده است . هدف پژوهش حاضر تحلیل رابطه میان تسهیم دانش و چابکی سازمانی از دید کارکنان شرکت توزیع برق استان اصفهان می باشد . جامعه آماری این پژوه...
With respect to the limitations of fossil energy resources, different types of electric vehicles (EVs) are developed as suitable alternatives. Lithium-ion (Li-ion) battery cells play an extremely important role in EVs due to their unique features. But they need a thermal management system (TMS) to maintain their surface temperature uniformity and avoid them from thermal runaways. In the current...
To provide the required service quality to the consumers connected to the ending buses of radial distribution feeders, the voltage magnitude is set at higher values at the substation point and hence, at the buses located within the beginning feeder sections. The active and reactive powers are in touch with voltage magnitude at the corresponding buses. Accordingly, the voltage increase stimulate...
Electric power industry have always try to provide reliable electricity to customers and at the same time decrease system costs. High Voltage circuit-breakers are an essential part of the power network. This study has developed a maintenance and replacement scheduling model for high voltage circuit- breakers that minimize maintenance costs while maintaining the acceptable reliability. This mo...
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