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Quantifying the dynamic and the evolution of an electrical power distribution system is an important task in operational and planning studies, where some of the issues addressed is to measure the growth of the electrical demand, with special attention to residential consumption due to its randomness. An adequate representation will ensure valid results for future prediction of the system behaviour...
The population status of disability of the lower limbs represents a challenge to recover locomotion, because they require costly interventions, depending on the characteristics of each patient's needs, prosthetic-orthotic needs, or elements that help in its displacement. Such is the case of canes, crutches, wheel chairs or other items that serve as support and help to generate the static equilibrium...
Several studies and projects carried out at the University of Valparaiso are focused on the condition of the elderly, particularly those who present conditions of vulnerability and deterioration. In this context, the actions of the academy are consistent with the policies defined by Chilean Government. This is generated by the current conditions of demographic and epidemiological transition, which...
A design methodology for an integrated CMOS Current Feedback Instrumentation Amplifier (CFIA) intended for bioespectroscopy measurement is presented in this paper. This methodology takes into account key design aspects such as measurement probe geometry, noise and gain requirements, CMRR, PSRR and operation region considerations (gm/ID analysis) of critical transistors of the amplifier to perform...
This paper analyzes the characteristics and functions of exoskeleton-based rehabilitation systems, detailing the reasons why a person tends to use prostheses and the risks to which a person is exposed when suffering an amputation in their body. We show the development of an exoskeleton prototype with adjustable measures for children from 2 to 4 years of age, using embedded electronic systems for the...
Emotions are directly related whit external or internal stimulation which a person is submitted, influencing these stimuli on their physical and mental health. These emotional changes produce variations in cardiovascular behavior and respiratory activity. This research proposes the characterization of cardiac system in healthy subject submitted to 3 different audiovisual stimuli, by means of the analysis...
This paper presents a design of a Triband microstrip antenna for 2.4 GHz, 3.5 GHz and 5.7 GHz applied a WBAN (Wireless Body Area Network). The proposed antenna with three substrates types consists of L-shaped slots have been determined based on the frequency bands. For the integration of these techniques three frequency bands consisting of the ISM band 2.4 GHz and 5.7 GHz, and 3.5 GHz band UWB respectively...
The Domain Name System (DNS) has evolved to support the exponential growth of the Internet, by relying heavily on a highly distributed infrastructure. Nevertheless, trust between server must exist in order to guarantee correct functioning of the system, which is prone to attacks and errors. The Domain Name System Security Extensions (DNSSEC) is the current extension of the DNS system to provide security...
The motivation of this research arises from the design of a low scale electric generation project, where a poly-phase generator is designed to harvest the energy from static exercise machines. This article presents the development of a static power electronics scheme based on a rectifier, dc-dc converter and a voltage source inverter (VSI) that enables the efficient energy management between a variable...
Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
In recent years, the use of non-conventional renewable energies, particularly photovoltaic solar energy, has been growing steadily in the country and is currently a real alternative to collaborate in the production of energy required by the national industry. Motivated by the above is that the study and development of technology in Chile for this energy opportunity is fundamental at the present time...
Detecting communities in non-trivial networks is a hard task that has been attracting the attention of many researchers in the field of complex networks. When the network has identical and non-overlapping communities, however, one could expect this task to be easy. We show in this paper that, surprisingly, it is not the case. For this purpose, we carried out a controlled experiment in which 9 well-known...
In this paper a 27-Level Asymmetric Multilevel STATic COMpensator is presented aimed to compensate reactive power. The STATCOM is controlled with a master-slave approach, where the master loop is responsible to regulate the DC voltage using a Proportional-Integral controller, while the inner loop is in charge to track the reference currents through a Proportional-Resonant control block. The presented...
This work presents a sweep for the modulation index in a 27-Level Asymmetric Multilevel Converter that uses the Selective Harmonic Elimination modulation technique. Different set of solutions are obtained and presented in order to define the value of the firing angles for the multilevel waveform as well as the value of the modulation index. The number of levels in the converter decreases when the...
The classic model predictive control presents a variable switching frequency which could produce resonances in the input filter of the matrix converter, affecting the performance of the system. In this paper a model predictive control strategy is proposed with fixed switching frequency operation which is enhanced with an active damping method in order to mitigate resonances of the input filter. The...
Matrix converters are devices that allow the management of bidirectional flows of energy, reduced size, increased useful life and high efficiency in wind schemes. In this paper we present the experimental results obtained after the application of a predictive current control technique for two matrix converters feeding isolated loads. One scheme is based on IGBT technology and the other on SiC-MOSFET...
This is a fact already known by all many companies make large and important disbursements to keep their equipment and information safe from possible attacks and threats that are internal or external. Among the internal threats are the duplication of users, the change of credentials of access to the network, where fraud, sabotage and robberies through the network are actions that need to be faced with...
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