نتایج جستجو برای: electric power factor

تعداد نتایج: 1412942  

2014
Almoataz Y. Abdelaziz Ahmad H. Besheer Ahmed M. Kassem

Single-diode Model Based Photovoltaic Module: Analysis and Comparison Approach Ahmad H. Besheer, Ahmed M. Kassem & Almoataz Y. Abdelaziz a Electrical Engineering Department, Faculty of Engineering, University of Tabuk, Tabuk, Saudi Arabia b Environmental Studies and Research Institute, University of Sadat City, Sadat City, Egypt c Electrical Department, Beni Suef University, Beni Suef, Egypt d ...

Journal: :Chaos 2007
Ian Dobson Benjamin A Carreras Vickie E Lynch David E Newman

We give an overview of a complex systems approach to large blackouts of electric power transmission systems caused by cascading failure. Instead of looking at the details of particular blackouts, we study the statistics and dynamics of series of blackouts with approximate global models. Blackout data from several countries suggest that the frequency of large blackouts is governed by a power law...

2011
Johan Lundquist

Introduction The power quality of distribution systems has a drastic effect on power regulation and consumption. Johan Lundquist of the Chalmers University of Technology in Goteberg, Sweden put it best, stating “The phrase ‘power quality’ has been widely used during the last decade and includes all aspects of events in the system that deviates from normal operation.” This has been especially tr...

2009
Robert Alexander Andre Kurs Aristeidis Karalis

In this dissertation, I describe the design and construction of a system which can transfer electric power wirelessly. This is accomplished using inductive, near-field, non-radiative coupling between self-resonant copper helices. In our first experiment, we transfered 60W of power over a distance of 2m with 45% efficiency. In our second experiment, we designed a system which can transfer power ...

2005
Osman Bulent Tor Mohammad Shahidehpour

In this study, asset management strategies in power distribution systems are investigated chronologically based on short-term, mid-term and long-term time scales. New strategies and their interrelation and coincidence in different time scales are discussed. The central role of Information Technologies (IT) in asset management is emphasized with supportive examples.

2013
E. Benedict T. Collins D. Gotham R. Ramabhadran S. Hoffman D. Karipides S. Pekarek

M. Mohammadian M.H. Ranjbar jaferi S.M.A. Mohammadi

Based on the problems caused by today conventional vehicles, much attention has been put on the fuel cell vehicles researches. However, using a fuel cell system is not adequate alone in transportation applications, because the load power profile includes transient that is not compatible with the fuel cell dynamic. To resolve this problem, hybridization of the fuel cell and energy storage device...

ژورنال: تحقیقات موتور 2022

The controller of the hybrid electric vehicle determines the combustion engine start-stop time, the operation points, and regenerative brake energy. The Controlling approach of hybrid electric vehicles controls the amount of needed fuel in every driving situation. In the present study, the thermostat strategy is implemented along with fuzzy logic control and compared to the classic thermostat s...

2008
Zugang Liu

Abstract: In this paper, we develop a novel electric power supply chain network model with fuel supply markets that captures both the economic network transactions in energy supply chains and the physical network transmission constraints in the electric power network. The theoretical derivation and analyses are done using the theory of variational inequalities. We then apply the model to a spec...

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