نتایج جستجو برای: voltage profile

تعداد نتایج: 326068  

Journal: :International Journal of Electrical and Computer Engineering (IJECE) 2013

2015
A. Rezaee Jordehi

In electric power systems, finding optimal location and setting of flexible AC transmission system (FACTS) devices represents a difficult optimisation problem. This is due to its discrete, multi-objective, multimodal and constrained nature. Finding near-global solutions in such a problem is very demanding. Brainstorm optimisation algorithm (BSOA) is a novel promising heuristic optimisation algo...

2013
Gurpreet kour R. K. Sharma

An electric distribution system plays an important role in achieving satisfactory power supply. The quality of power is measured by voltage stability and profile of voltage. But because of losses in distribution system, its voltage profile affects. Basically, the losses could be defined as the difference between the metered units energy input into the distribution system and the total energy pa...

2008
Yoshinori Sakata Kentaro Kawakami Hiroshi Kawaguchi Masahiko Yoshimoto

We propose an elastic pipeline architecture that can apply dynamic voltage scaling (DVS) to a dedicated hardware, and implement the elastic pipeline to a portable H.264/AVC decoder LSI with embedded frame buffer SRAM. A supply voltage and operating frequency are decreased by a feedback-type voltage/frequency control algorithm. In a portable H.264/AVC decoder, embedded SARM can be utilized as fr...

2012
Khyati Mistry Ranjit Roy

Distributed generator (DG) placement in distribution system is one of the important tasks for better operation of distribution system. Distribution system has high r/x ratio and high operating current resulting into higher power loss and higher voltage drop. The main objective of this paper is to minimize the active power loss and to improve voltage profile of overall system by optimal sizing a...

Journal: :Biochemical and biophysical research communications 2007
Purnima Guda Philip E Bourne Chittibabu Guda

Voltage-gated ion channels (VGCs) mediate selective diffusion of ions across cell membranes to enable many vital cellular processes. Three-dimensional structure data are lacking for VGC proteins; hence, to better understand their function, there is a need to identify the conserved motifs using sequence analysis methods. In this study, we have used a profile-to-profile alignment method to identi...

Gholami, Mojtaba ,

Abstract: Optimization of DG and capacitors is a nonlinear objective optimization problem with equal and unequal constraints, and the efficiency of meta-heuristic methods for solving optimization problems has been proven to any degree of complex it. As the population grows and then electricity consumption increases, the need for generation increases, which further reduces voltage, increases los...

In this paper, we propose a new heterostructure dual material gate junctionless field-effect transistor (H-DMG-JLFET), with negative differential resistance (NDR) characteristic. The drain and channel material are silicon and source material is germanium. The gate electrode near the source is larger. A dual gate material technique is used to achieve upward band bending in order to access n-i-p-...

2013
Mr.Peter Musau Moses Nicodemus Abungu Odero

Due to the increased importance of DFIGs in optimization of real and reactive power losses and the maintenance of voltage profile, the general methods of DG placement and sizing in the existing literature cannot be of practical importance in DFIG .In this paper a pure PSO method used in general DG is compared with a HGAPSO in the siting and sizing of DFIG with the objective of minimizing power ...

Journal: :The Journal of General Physiology 2004
Umberto Banderali Hélène Klein Line Garneau Manuel Simoes Lucie Parent Rémy Sauvé

We present in this work a structural model of the open IKCa (KCa3.1) channel derived by homology modeling from the MthK channel structure, and used this model to compute the transmembrane potential profile along the channel pore. This analysis showed that the selectivity filter and the region extending from the channel inner cavity to the internal medium should respectively account for 81% and ...

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