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The Provincial Health System (Sistema Provincial de Salud, SIPROSA) divides Tucumán in four programmatic areas, where there are public hospitals and Health Primary Attention Centers (Centros de Atención Primaria de Salud, CAPS). The purpose of this structure is to regulate the health care assistance allowing the access to all population.
We present the development of a transversally excited CO2 laser that operates at pressures up to 200 kPa and 50 Hz repetition rate. The laser has been designed to trigger photo-chemical reactions. We perform a detailed study of the well-known system of capacitive transfer to exploit its virtues and avoid the use of complex system of greater cost and lower reliability. We developed a simple method...
This paper describes the design and analysis of an impedance matching network for spiral logarithmic (self-complementary) broadband antennas, able to operate in a frequency band of 1 GHz to 9 GHz. The proposed design is based on tapered microstrip lines which exhibit a progressive variation of its width by obtaining a gradual change in the impedance. Employing similar concepts over the ground plane,...
In this work a procedure for characterization of polymeric piezoelectric sensors is proposed. Results are presented for two sensors based on polyvinylidene fluoride (PVDF). The electrical impedances of the sensors in the range between 100 Hz and 30 MHz were measured. Then, the spatial and temporal responses of near-field were determined using thin circular absorbent objects excited by laser pulses...
The hydrothermal systems operation planning is an optimal control problem, complex in nature due to its nonlinear, dynamic, stochastic, non-separable and non-convex character. Conventionally it has been solved by mean of algorithms of mathematical programming which generally require simplifications in the formulation of the problem, even in the context of technological developments that allow to have...
The incorporation of wind power generation is growing steadily, a fact that is making the utilities evaluate the various influencing aspects of wind power generation onto power systems. On the other hand, the breakthrough of new technologies in the field of electric energy storage makes possible its incorporation into power systems. The characteristics of these energy storages offer a great potential...
Power supply companies face the risk of economic loss by not managing their assets. Consequently, companies in the sector are attempting to implement systems for managing the life cycle of their most critical assets based series of standards ISO 55000. Among these critical assets are the power lines. In the context of ISO 55000, companies should consider maintenance schemes centered on the condition...
This paper presents a study of a method called Digital Backward Propagation (DBP) to compensate, simultaneously, the linear and nonlinear effects that occur in a communication link of 10 Gb/s over 500 km of optical fiber (FO), with 8 wavelength division multiplexed (WDM) channels. The procedure used consists in applying the Split Step Fourier Method (SSFM) to solve the inverse Nonlinear Schrödinger...
This paper introduces the main guidelines for the management of high-voltage circuit breakers. The elements and procedures involved in each stage of the life cycle for this kind of asset are considered. For this purpose, the main issues of circuit breakers and asset management, life cycle stages, and risk management are given. Concepts are developed in agreement with those exposed at the standards...
Failures or catastrophic events in power transformers, which result in a negative economic impact on electric companies, must be controlled and limited. An important tool to deal with this issue is asset management. The asset life cycle management and the assessment of involved risk in each one of the life stages is very important, if an electric company is looking for the implementation of an asset...
A control strategy for a Hybrid Energy Storage System (HESS) used in electric vehicles is presented in this work. The system consists on a battery-ultracapacitor (UC) set in a semi-active capacitor configuration. In order to control the UC energy a Buck-Boost DC-DC converter is used, while the battery is passively connected to the dc-link. Based on the converter model a low level current control loop...
This paper presents a software tool that allows the detection, localization and classification of PQ events based on Wavelet Transform and Support Vector Machine algorithms.
This paper proposes a new control law which allows the tracking trajectory of a mobile robot considering additive uncertainties. A control scheme based on linear algebra is obtained. Furthermore, the optimal controller parameters are chosen by the Monte Carlo experiment. Experimental results are shown and discussed to demonstrate the efficiency of the controller.
Understanding the connections of different electronic components is key to understanding how a circuit works. Classroom activities presented in this paper provide a first approach to a widely used engineering model, such as “two-pole network”. The didactic proposal aims to develop solving skills for pencil and paper problems, for assembling and measuring circuits with real components, for reverse...
Networked small satellites constellations can yield, in general, not only higher revisit rates but new mission opportunities with important cost and risk saving by means of successive small launches and distributed functionalities such as payload, storage, processing, or data downlink. Nevertheless, as this networks operates in challenged environments, they usually face resources constraints; moreover,...
The effects of stator winding interturn short-circuit faults in Permanent Magnet Synchronous Motors (PMSM) are analyzed in this paper. A dynamic model with stator winding interturn faults is evaluated. This model allows to generate the interturn short-circuit through a severity factor vector fault for any phase. Aiming to develop strategies for detection, analysis of the effects of this type of fault...
This paper presents a GPS and GLONASS L1 band acquisition system with an USB interface. This system has been conceived as an intrument capable of sampling L1 band GPS/GLONASS signals and transfering the samples to a PC through a USB connection, where they can be processed in real-time or stored for later processing. This tool enables the user to test new types of GNSS signal processing algorithms...
In this paper the analysis of two topologies of solid state transformers, three-phase, DC to AC, bidirectional, isolated, single-stage conversion, based on the principle of operation of dual active bridge converters is presented. The principle of operation and strategy of modulation used in each topology is explained. Finally simulation results are shown to evaluate and compare the performance of...
The objective of this paper is to apply Principal Component Analysis to evaluate the aging state of the insulation system of the generators of Salto Grande identifying the mostly aged units. This hydropower plant has 14 generators of 135 MW each, with an average age of 32 years. From the analysis it was concluded that there is no evidence of critical units, which require rapid intervention. But there...
The magnetic permeability of a ferrite is an important factor in designing devices such as inductors, transformers, and microwave absorbing materials among others. Due to this, it is advisable to study the magnetic permeability of a ferrite as a function of frequency.
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