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One of the latest methods for desalinating water is the so-called Capacitive De-Ionization (CDI). The technology is based on carbon electrodes that are capable of adsorbing ionic components from water. The aim of this paper is to present a water desalination system in which a dc/dc converter is used to efficiently recover part of the energy involved. The CDI process and the characteristics of the...
This paper presents a novel system that allows elevating large structures by using a set of lifting towers that, adequately controlled with a synchronized operation, succeed in pulling the spatial mesh up to the height where it should stay. By doing so, the mounting of the spatial mesh can be carried out on ground in an easier and, most important of all, safer way; it also gives rise to a shorter...
A simple method for real-time synchronization of power quality measurements in low-voltage supply systems is presented. Proper synchronization between the data acquisition window and the power system frequency is necessary to accurately measure the harmonic distortion. The proposed method is based on the use of the standard Discrete Fourier Transform method using a 10-cycle width rectangular window...
The popularity of positioning satellite systems in open areas has led to a high demand for systems suitable for harsh environments, where the former fail. Wireless localization and inertial navigation have emerged as the most valuable alternatives to offer positioning in such environments. However, the characteristics of the wireless propagation channel in harsh environments are dynamic and unpredictable...
Algorithms of space-vector-based synchronized pulsewidth modulation (PWM) have been applied for control of dual-inverter fed open-end winding induction motor drive supplied by two isolated dc-sources with non-equal voltages. It has been shown, that algorithms of synchronized PWM provide continuous phase voltage symmetry for any ratios (integral or fractional) between the switching and fundamental...
The success of location-based services in open areas, mainly driven by Global Navigation Satellite Systems (GNSS), has pushed the research community towards the development of robust systems that provide a similar localization accuracy in harsh environments, where there is no line-of-sight (LOS) to satellites. Techniques based on time-of-arrival (TOA) measurements are the most promising since they...
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