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2007 IEEE Power Electronics Specialists Conference

Date 17-21 June 2007

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Displaying Results 1 - 25 of 584
  • [Front cover]

    Publication Year: 2007, Page(s): C1
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  • IEEE 38th Annual Power Electronics Specialists Conference

    Publication Year: 2007, Page(s): II
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  • Welcome to Orlando

    Publication Year: 2007, Page(s):III - IV
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  • Organizing Committee

    Publication Year: 2007, Page(s):V - VI
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  • Technical Program Committee

    Publication Year: 2007, Page(s): VII
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  • Welcome message

    Publication Year: 2007, Page(s): IX
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  • Organizing Committee

    Publication Year: 2007, Page(s): X
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  • Technical Program Committee

    Publication Year: 2007, Page(s): XI
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  • Table of contents

    Publication Year: 2007
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  • [Breaker page]

    Publication Year: 2007, Page(s): 1
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  • Adaptive Bus Voltage Positioning System for Two Stage Laptop Voltage Regulators

    Publication Year: 2007, Page(s):2 - 8
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (507 KB) | HTML iconHTML

    For the laptop voltage regulators, not only the heavy load efficiency, but also the light load efficiency is very important for thermal point and for the battery running time. So far, to increase the heavy load efficiency, the two stage structure is proposed and to increase the light load efficiency of this two stage voltage regulators, the adaptive bus voltage positioning (ABVP) control concept i... View full abstract»

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  • Adaptive Output Current Feedforward Control in VR Applications

    Publication Year: 2007, Page(s):9 - 14
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB) | HTML iconHTML

    A method for adapting the gain of an output current feedforward path in VR applications is presented. For regulators using adaptive voltage positioning (AVP), output current feedforward can improve the dynamic response to fast load transients. However, the feedforward path depends on parameters of the power train that are not known with precision. By analyzing the error voltag... View full abstract»

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  • The Combination of Thermal and Electrical Improvements in a 1U 100A VRM

    Publication Year: 2007, Page(s):15 - 20
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (393 KB) | HTML iconHTML

    The voltage regulator module (VRM) has been the standard in higher-power computers for some time thanks to their better cooling capability and less use of motherboard space compared to VR down. Physical size keeps diminishing to allow for more space savings and so the trend is to go for a small form factor such as 1U. The scaling down of CPU voltages demands more current from the VRM to meet ever-... View full abstract»

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  • A High Efficiency Synchronous Buck VRM with Current Source Gate Driver

    Publication Year: 2007, Page(s):21 - 27
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB) | HTML iconHTML

    In this paper, a new current source gate drive circuit is proposed for high efficiency synchronous buck VRMs. The proposed circuit achieves quick turn-on and turn-off transition times to reduce switching loss and conduction loss in power MOSFETS. The driver circuit consists of two sets of four control switches and two very small inductors (typically 50 nH-300 nH each at 1 MHz). It drives both the ... View full abstract»

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  • [Breaker page]

    Publication Year: 2007, Page(s): 28
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  • A Comprehensive Study of Harmonic Cancellation Effects in Interleaved Three-Phase VSCs

    Publication Year: 2007, Page(s):29 - 35
    Cited by:  Papers (37)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (628 KB) | HTML iconHTML

    This paper presents a systematic study of the effects of interleaving on three-phase voltage-sourced converters (VSC). Analytical results are developed for the spectra of converter phase currents, common-mode voltages, and dc-link currents for the general case of interleaving N parallel modules with a common dc link. It will be shown, both analytically and numerically, that ripple cancellation eff... View full abstract»

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  • A Novel Deadbeat Current Control Scheme with an Adaptive Self-Tuning Load Model for a Three-Phase PWM-VSI

    Publication Year: 2007, Page(s):36 - 42
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB) | HTML iconHTML

    In this paper, a novel deadbeat current control scheme with an adaptive self-tuning load model for a three-phase pulse-width-modulated (PWM) voltage source inverter (VSI) is proposed. First, to achieve high bandwidth current control characteristics, an improved deadbeat current controller with delay compensation is adopted. The compensation method forces the delays elements, caused by voltage calc... View full abstract»

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  • Extension of the Harmonic Elimination Technique in the Presence of Non Linear Loads

    Publication Year: 2007, Page(s):43 - 46
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (250 KB) | HTML iconHTML

    The harmonic elimination technique consists on finding the proper inverter switching events so that the first harmonic amplitude is controlled and the rest of odd harmonic components are suppressed. However, non linear loads connected to the output of the inverter provoke additional harmonics that distort the output voltage applied to the load. Along the present work it is proposed an extension of... View full abstract»

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  • Continuous PWM Techniques for Sinusoidal Voltage Generation with Seven-Phase Voltage Source Inverters

    Publication Year: 2007, Page(s):47 - 52
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB) | HTML iconHTML

    Multi-phase motor drives are typically supplied from two-level voltage source inverters (VSIs). It is thus necessary to develop pulse width modulation (PWM) schemes for inverter control in order to utilise the benefits offered by multiphase motor drives. This paper deals with seven-phase VSI and develops continuous PWM schemes that enable generation of sinusoidal voltages at the output. Carrier-ba... View full abstract»

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  • [Breaker page]

    Publication Year: 2007, Page(s): 53
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  • SiC JFET in Contrast to High Speed Si IGBT in Matrix Converter Topology

    Publication Year: 2007, Page(s):54 - 60
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (771 KB) | HTML iconHTML

    The retrograde efforts in the field of silicon carbide (SiC) technology led to outstanding device parameters of high voltage unipolar devices. Overcoming silicon (Si) unipolar limits in SiC, currently the vertical JFET is the most serious active switch which seems to outperform all the established technology. With exemplaryly 48 Wan'3 the matrix converter is predicted to reach highest power densit... View full abstract»

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  • Experimental Evaluation of SiC PiN Diode Forward Bias Degradation and Long Term Stability

    Publication Year: 2007, Page(s):61 - 65
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (615 KB) | HTML iconHTML

    New automated measurement systems and test procedures are presented that enable the evaluation of long-term stability of SiC PiN diodes. Long-term stability results are presented for 10 kV SiC PiN diodes that are made using a new fabrication technology developed to eliminate the source of the degradation. The major objectives of the long-term stability test procedures are to monitor the forward on... View full abstract»

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  • Performance of Silicon Germanium Power Devices at Extreme Temperatures

    Publication Year: 2007, Page(s):66 - 71
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    In deep space missions, surface- and spacecraft are exposed to extreme low temperatures. For example, calculations indicate that temperatures of about 120 K (- 153degC) at the orbit of Jupiter and about 44 K (-229degC) at the orbit of Pluto. Even the moon, Mars, and asteroids can subject spacecraft to temperatures well below the conventional limit for electronic parts of -55degC. The utilization o... View full abstract»

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  • Characteristics of 10 kV SiC MOSFET and PIN Diode and Their Application Prospect in High Voltage High Frequency DC/DC Converter

    Publication Year: 2007, Page(s):72 - 77
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (293 KB) | HTML iconHTML

    10 kV power 4H-SiC DiMOSFET and PIN diodes are currently under development by a number of organizations in the United States with the aim to enable their application in high voltage high frequency power conversion applications. The aim of this study is to obtain key device characteristics of these devices through device simulation so that realistic application prospect of these devices can be prov... View full abstract»

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  • [Breaker page]

    Publication Year: 2007, Page(s): 78
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