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Power Electronics Congress, 2008. CIEP 2008. 11th IEEE International

Date 24-27 Aug. 2008

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Displaying Results 1 - 25 of 75
  • [Front cover]

    Publication Year: 2008 , Page(s): c1
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  • Sponsor organizer

    Publication Year: 2008 , Page(s): ii
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  • Welcome message

    Publication Year: 2008 , Page(s): iii
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  • [Copyright notice]

    Publication Year: 2008 , Page(s): iv
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  • International Steering Committee

    Publication Year: 2008 , Page(s): v
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  • IEEE Section Morelos - PELS Chapter

    Publication Year: 2008 , Page(s): vi
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  • Mexican power electronics society - SOMEP

    Publication Year: 2008 , Page(s): vii
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  • Technical program reviewers

    Publication Year: 2008
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  • Tutorials

    Publication Year: 2008 , Page(s): ix
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    Provides an abstract for each of the tutorial 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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  • [Blank page]

    Publication Year: 2008 , Page(s): x
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  • Table of content

    Publication Year: 2008 , Page(s): xi - xiv
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  • Keynote lectures Power electronics for alternative energy sources

    Publication Year: 2008 , Page(s): xv
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (139 KB)  

    Provides an abstract for each of the keynote 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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  • [Blank page]

    Publication Year: 2008 , Page(s): xvi
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  • A look to the future of the electric sector

    Publication Year: 2008 , Page(s): xvii
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (141 KB) |  | HTML iconHTML  

    The electric sector, as we know it today, had its origins more than one hundred years ago, when engineering developments in electric power plants were motivated by the principle of economies of scale, in which bigger meant cheaper. As the generating capacity of power plants grew bigger, the opportunity of carrying additional energy to farther away centers was envisioned. And so, large transmission and sub-transmission networks were born. As the cost of the fossil fuel increases, problems related to transmission energy losses become important, and the urgent environmental problem caused mainly by the big generation plants that burn fossil fuel is recognized. Thus, the ldquobigger is betterrdquo paradigm begins to show its weakness. At the other end of the scale, alternatives for electricity generation appear in the horizon, where the tendency is towards small devices, capable of taking small electrical loads, whose economy resides in the processes for their massive production. Such devices are designed to produce electricity at the consumption point, by means of local sources of energy. Solar and wind energy, small waterfalls, water currents, different forms of biomass, as well as different forms of energy in the oceans, are making inroads into the electrical systems, both as autonomous installations in remote sites and as grid-connected facilities. New paradigms, such as sustainable development, energy security and environmental protection, are emerging and will strongly influence the nature and structure of the electric systems in the decades to come. Similarly, technological change, occurring both on the electricity supply and the demand sides, will establish proper conditions for the evolution towards new forms of the future electric business. The scientific and technical basis for the evolution of the electrical sector are found in the field of new materials, the availability of microprocessors, modern electronic and control devises, as well as powerful calculat- - ion tools for analysis, design and engineering, of the generation equipment and of the supply systems. This and other related ideas will be the subject of this conference. View full abstract»

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  • Power electronics for alternative energy sources

    Publication Year: 2008 , Page(s): xviii - xix
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (215 KB) |  | HTML iconHTML  

    The demand for the development of environmentally clean, reliable and affordable energy technologies has prompted renewed interest in renewable energy systems worldwide. Many renewable energy technologies today are well developed, reliable, and cost competitive with the conventional fuel generators. The renewable energy sources are generally converted to dc or ac electric voltages or currents. Many renewable energy technologies today are well developed, reliable, and cost competitive with the conventional fuel generators [1-4]. The power electronics is finding increasing applications in renewable energy technologies to process efficiently and produce a flexible ac or dc output to match a variable or fixed load demand. View full abstract»

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  • Power conditioning structures and schemes for alternative renewable resource technologies

    Publication Year: 2008 , Page(s): xix - xxvii
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (548 KB) |  | HTML iconHTML  

    In this paper it is presented and discussed some of the typical power conditioning structures used for alternative renewable resource technologies. In particular, an array of photovoltaic (PV) panels (solar cell panels) is employed as an alternative renewable resource (ARR) technology to provide clean electric energy to remote rural residential or critical industrial loads. Typical dc-dc converters are discussed which operate to power-conditioning any particular ARR technology (solar, wind, fuel cell, etc.). It is also discussed a new proposed dc-dc converter which is employed to increase the output dc voltage delivered by the PV panels. The new approach employs a series-combined connected boost and buck-boost dc-dc converter for power conditioning of the dc-voltage provided by a photovoltaic panel array. Analysis of the two series-combined dc-dc converters is presented along with simulation and experimental results. In addition, a scheme is introduced to interconnect a supercapacitor (ultracapacitor) module as an energy storage technology (EST) along with photovoltaic panels in order to help in maintaining a critical load under uncertain environmental conditions. View full abstract»

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  • [Blank page]

    Publication Year: 2008 , Page(s): xxviii
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  • Session I Power factor correction

    Publication Year: 2008 , Page(s): 1
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  • [Blank page]

    Publication Year: 2008
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  • Study of the Power Factor Correctors with fast output-voltage feedback loop

    Publication Year: 2008 , Page(s): 3 - 10
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (465 KB) |  | HTML iconHTML  

    When a power factor corrector (PFC) is designed with a fast output-voltage feedback loop, the study of the power stage changes in comparison with the one carried out with a slow output-voltage feedback loop. This is a consequence of the voltage ripple that appears in the control signal. A study of the static behaviour of a PFC with fast output-voltage feedback loop is carried out in this paper by using two parameters: the module of the relative voltage ripple of the control signal and its phase angle. These parameters do not change with the load and they determine the line total harmonic distortion (THD) and the power factor (PF) at the input of the PFC. Moreover, these parameters also determine the maximum power handled by the converter according to the EN 61000-3-2 regulations in class A and in class B. On the other hand, when the converter must comply with the EN 61000-3-2 regulations in class C or in class D, the compliance does not depend on the power handled by the PFC and not all the possible combinations of the relative voltage ripple of the control signal and its phase angle achieve compliance with the above mentioned regulations. Finally, the study has been experimentally verified. View full abstract»

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  • Input current shaper operating in DCM

    Publication Year: 2008 , Page(s): 11 - 14
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (146 KB) |  | HTML iconHTML  

    Several AC/DC converters have been presented in order to meet the power quality regulations maintaining the lowest number of components with the purpose of minimize the cost and complexity. In this paper the parallel active input current shaper (PAICS) operated in discontinuous conduction mode (DCM) is presented. In difference with the traditional series AICS, the proposed scheme connects the auxiliary output of the main converter in parallel of the rectified ac mains, and also the design is made to correct the power factor not only to fulfill the standard specifications. Operation, design and experimental results are presented. View full abstract»

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  • A new very simple control circuitry for the Flyback family of Power Factor Correctors operating in continuous conduction mode

    Publication Year: 2008 , Page(s): 15 - 22
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    This paper deals with a new control method for power factor correctors based on flybackpsilas family converters (e.g., Buck-Boost, Flyback, SEPIC, Cuk and Zeta). The control is carried out by a standard IC controller for peak current-mode dc-dc converters, with only an exponential compensation ramp and a peak detector. Neither analog multiplier nor input voltage sensor are needed to achieve quasi-sinusoidal line waveforms, which makes this control strategy very attractive. The method is similar the one-cycle control, but it does not need the use of either two matched integrators or a current sensor with an integrator with reset. Moreover, the line current is cycle-by-cycle controlled and, therefore, the input current feedback loop is extremely fast, which allows the use of this type of control with high frequency lines. View full abstract»

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  • Three-phase asymmetrical power source with power factor correction

    Publication Year: 2008 , Page(s): 23 - 29
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (242 KB) |  | HTML iconHTML  

    This paper presents a novel technique to obtain asymmetrical output voltage from a three-phase power source in a single-stage. The goal is reached with the help of a three-phase power factor correction circuit. A possible application for this asymmetrical power source is to be implemented in the transition from 14 V to 42 V automobile electrical system. Design guidelines of the line inductors and duty cycles are established. Moreover, a detailed analysis of the proposed topology is developed. In addition, simulations and experimental results are shown for a 40 kHz switching frequency. View full abstract»

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  • [Blank page]

    Publication Year: 2008 , Page(s): 30
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  • Session II Electronic ballasts

    Publication Year: 2008 , Page(s): 31
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