2012 VI Andean Region International Conference

7-9 Nov. 2012

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  • [Front cover]

    Publication Year: 2012, Page(s): C4
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  • [Title page i]

    Publication Year: 2012, Page(s): i
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  • [Title page iii]

    Publication Year: 2012, Page(s): iii
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  • [Copyright notice]

    Publication Year: 2012, Page(s): iv
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  • Table of contents

    Publication Year: 2012, Page(s):v - x
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  • Message from Andescon General Chair

    Publication Year: 2012, Page(s): xi
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  • Welcome message from Rector of Universidad Politécnica Salesiana

    Publication Year: 2012, Page(s):xii - xiii
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  • Message from Andescon Organizing Committee General Chairs

    Publication Year: 2012, Page(s): xiv
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  • Message from Andescon Technical Committee Chair

    Publication Year: 2012, Page(s): xv
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  • Andescon 2012 Committee List

    Publication Year: 2012, Page(s): xvi
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  • Andescon 2012 Local Organizing Committee

    Publication Year: 2012, Page(s): xvii
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  • Andescon 2012 Technical Committee

    Publication Year: 2012, Page(s): xviii
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  • Andescon 2012 Reviewers List

    Publication Year: 2012, Page(s):xix - xx
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  • Plenary speakers information [4 biographies]

    Publication Year: 2012, Page(s): xxi
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (235 KB)

    Provides an abstract for each of the plenary presentations and a brief professional biography of each presenter. The complete presentations were not made available for publication as part of the conference proceedings. View full abstract»

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  • ANDESCON 2012 - Call for Papers

    Publication Year: 2012, Page(s): xxii
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  • New Formulation for Distribution System State Estimation

    Publication Year: 2012, Page(s):3 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (285 KB) | HTML iconHTML

    This paper presents a new formulation for system state estimation of passive electric distribution networks. The fundamental idea discussed here is how to obtain the state of the system at maximum demand condition using three sources of information: 1) a quasi-symmetric matrix called TRX representing network structure and topology, 2) power measurements at main feeder disconnection devices and rec... View full abstract»

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  • Evaluation of Stray Losses in Throats of Distribution Transformers Using Finite Element Simulation

    Publication Year: 2012, Page(s):7 - 10
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (543 KB) | HTML iconHTML

    This paper provides a numerical methodology to quantify the losses produced by induced currents in the metallic ducts (throats) used to enclose the bus bars connecting distribution transformers to switchgears. This calculation is important because some transformer manufacturers in Mexico don't include throats in the load losses measurement. In particular, it presents the results of simulations mad... View full abstract»

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  • Parameter Estimation Method for Induction Machines Using the Instantaneous Impedance During a Dynamic Start-Up

    Publication Year: 2012, Page(s):11 - 14
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (294 KB) | HTML iconHTML

    In this work a parameter estimation method of the induction machine model based on the instantaneous impedance is presented. The proposed method is based on instantaneous voltage and current measurements during start-up of the induction motor at rated voltage. The proposed parameter estimation method uses an space vector description of the transient machine equations, referred to the stator frame ... View full abstract»

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  • A Modulation Technique for Single-Phase Asymmetric Flying-Capacitor DC/AC Converter

    Publication Year: 2012, Page(s):17 - 20
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (475 KB) | HTML iconHTML

    DC/AC converters are widely used in several applications, currently the DC/AC multilevel configuration has been proposed for high and low power applications. In this paper a single-phase flying capacitor multilevel inverter is analyzed, indeed an asymmetric operation is addressed. A modulation technique is proposed to assure the proper control of the converter, it consists of modifying the carrier... View full abstract»

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  • Parallel DC/AC Converters under Connection/Disconnection of Power Modules

    Publication Year: 2012, Page(s):21 - 24
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (314 KB) | HTML iconHTML

    Paralleling converters is normally employed to increase power capacity in different applications, such as autonomous micro grid systems and unininterruptible power supplies. These systems share the current between the different converters, but it must be in an equalized manner, no matter different type of loads or conditions. This paper propose an alternative to operate parallel inverters, the pro... View full abstract»

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  • A Nonlinear Optimization Technique Applied to PWM Signals

    Publication Year: 2012, Page(s):25 - 28
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB) | HTML iconHTML

    Electronic frequency converters are increasingly used nowadays in a wide range of applications. However, due to switching techniques employed, the harmonic distortion of the resulting signals became an important parameter to be considered in the design of such converters. For this reason, special attention has been given to the techniques of pulse width modulation (PWM) aimed at reducing the harmo... View full abstract»

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  • Continuous, Non-invasive and Cuff-free Blood Pressure Monitoring System

    Publication Year: 2012, Page(s):31 - 34
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB) | HTML iconHTML

    This paper presents a continuous and non-invasive blood pressure monitoring system, which can measure the blood pressure without the use of a inflatable cuff. A wearable IEEE 802.15.4-based Wireless Body Sensor Network (WBSN) composed by a photoplethysmographic (PPG) sensor node located on the forehead, and an electrocardiographic sensor node located on the chest, is used to measure the propagatio... View full abstract»

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  • ECG Signal Monitoring Using Networked Mobile Devices

    Publication Year: 2012, Page(s):35 - 38
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (357 KB) | HTML iconHTML

    Aging populations and increasing rates of chronic diseases are overwhelming even the most efficient health care systems. Technology has the potential to move health care to a more proactive, consumer-centric model of care, capable of improving cost, quality, and accessibility of health care services. However, there are still many problems to solve before having fully functional, reliable, secure a... View full abstract»

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  • Mobile Identification: NFC in the Healthcare Sector

    Publication Year: 2012, Page(s):39 - 42
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (422 KB) | HTML iconHTML

    In the midterm future Near Field Communications (NFC) is expected to spread up within the healthcare sector. This article reviews the use of NFC in the healthcare sector. Application areas, use cases, potential benefits and barriers, will be presented. The present study provides guidance for researchers in adopting and deploying NFC in medical sector. The main healthcare and security applications ... View full abstract»

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  • Atrial Fibrillation ECG Signal Processing for QRST Cancellation: Zero-Padding Versus Time Alignment

    Publication Year: 2012, Page(s):45 - 48
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB) | HTML iconHTML

    In non-invasive analysis of atrial fibrillation (AF), the QRST cancellation is commonly applied by using a time-aligned average over several ECG cycles. This paper proposes another technique with less illusive high frequency content into the residual signal. Firstly the QRS complexes and T-end were detected by Pan-Tompkins's technique and Zhang's algorithm respectively. Subsequently, the QRST segm... View full abstract»

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