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A self-organized structure for mobility management in wireless networks

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The objective of this work is to analyse performance of unstable mobile nodes with selforganization structures in Delay Tolerant Networks  (DTN). This process enables the nodes to utilize their power fairly, and ensures that the links are established between nodes...

A simple power factor calculation for electrical power systems

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The accurately and fast estimation of Phase Difference (PD) is required between the voltage and current of an AC electrical power system to calculate the Power Factor (PF) for defining how effectively the electrical energy is converted into the useful...

A Single-Phase Voltage Sag Generator for Testing Electrical Equipments

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This paper describes a transformer-based voltage sag generator (VSG) suitable to evaluate the susceptibility of electrical equipment to voltage sag. The built VSG utilized one auto-transformer and two solid state relays (SSRs) to provide nominal voltage and sag voltage to...

A study of the variation of synchronous machine parameters due to saturation: a numerical approach

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This paper shows the variation of the fundamental parameters of synchronous machine two-axis equivalent  circuits due to magnetic saturation. The different magnetic states of the machine are obtained using finite- element magnetostatic solutions. This way the permeability patterns of the...

A survey on coverage and connectivity issues in wireless sensor networks

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A wireless sensor network (WSN) is composed of a group of small power-constrained nodes with functions of sensing and communication, which can be scattered over a vast region for the purpose of detecting or  monitoring some special events. The first...

A UPFC MODEL FOR DYNAMIC STABILITY ENHANCEMENT

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A UPFC MODEL FOR DYNAMIC STABILITY ENHANCEMENT

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While the controllability of the line power flow by unified power flow controller (UPFC) has been recognised, only very limited information is available concerning the quantitative control of the UPFC to provide additional damping during system oscillations. This paper presents...

Adaptive PI Control of Dynamic Voltage Restorer Using Fuzzy Logic

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PI controller is very common in the control of DVRs. However, one disadvantage of this conventional  controller is the fact that by using fixed gains, the controller may not provide the required control  performance, when there are variations in the...

Advanced Control Architectures for Intelligent Microgrids – Part II: Power Quality, Energy Storage, and AC/DC MicroGrids

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This paper summarizes the main problems and solutions of power quality in Microgrids, distributed energy storage systems, and AC/DC hybrid Microgrids. First, power quality enhancement of grid-interactive Microgrids is presented. Then, cooperative control for enhance voltage harmonics and unbalances in ...

Algebraic observer design for a class of uniformly-observable nonlinear systems: Application to 2-link robotic manipulator

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We propose a globally convergent observer for three-state nonlinear systems verifying the uniform complete observability condition. By constructing a time-varying differentiator, we are then able to reproduce the first and the second derivatives of the system output without imposing the...
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