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IEEE Power Electronics Letters

Issue 1 • March 2004

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Displaying Results 1 - 16 of 16
  • Table of contents

    Publication Year: 2004, Page(s): c1
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  • IEEE Power Electronics Letters publication information

    Publication Year: 2004, Page(s): c2
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  • Use of system oscillation to locate the MPP of PV panels

    Publication Year: 2004, Page(s):1 - 5
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    This letter proposes the use of system oscillation in a perturbation-based maximum power point (MPP) tracker to locate the MPP of photovoltaic (PV) panels. Instead of using an explicit perturbation source, the tracker controller is designed to make the overall system self-oscillate, so that the duty cycle of the main switch in the power conversion stage (PCS) is inherently modulated with a small-a... View full abstract»

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  • Identification of grid impedance for purposes of voltage feedback active filtering

    Publication Year: 2004, Page(s):6 - 10
    Cited by:  Papers (16)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    A voltage feedback active filter is vulnerable to unknown grid impedance. To overcome this problem we propose an identification method, which uses the control system of a frequency selective active filter to measure the grid impedance at selected frequencies. The usefulness of the method is experimentally demonstrated with a 19 kVA active rectifier with a voltage feedback active filtering function... View full abstract»

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  • The nearest three virtual space vector PWM - a modulation for the comprehensive neutral-point balancing in the three-level NPC inverter

    Publication Year: 2004, Page(s):11 - 15
    Cited by:  Papers (189)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB) | HTML iconHTML

    This letter presents a new modulation approach for the complete control of the neutral-point voltage in the three-level three-phase neutral-point-clamped voltage source inverter. The new modulation approach, based on the virtual space vector concept, guarantees the balancing of the neutral-point voltage for any load (linear or nonlinear) over the full range of converter output voltage and for all ... View full abstract»

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  • A new algorithm for rapid tracking of approximate maximum power point in photovoltaic systems

    Publication Year: 2004, Page(s):16 - 19
    Cited by:  Papers (153)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB) | HTML iconHTML

    This paper presents a new algorithm for tracking maximum power point in photovoltaic systems. This is a fast tracking algorithm, where an initial approximation of maximum power point is (MPP) quickly achieved using a variable step-size. Subsequently, the exact maximum power point can be targeted using any conventional method like the hill-climbing or incremental conductance method. Thus, the drawb... View full abstract»

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  • Estimative current mode control technique for DC-DC converters operating in discontinuous conduction mode

    Publication Year: 2004, Page(s):20 - 23
    Cited by:  Papers (31)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB) | HTML iconHTML

    A new control technique for DC-DC converters is introduced and applied to a boost converter operating in discontinuous conduction mode (DCM). In contrast to conventional control methods, the principal idea of the proposed control scheme is to obtain samples of the required signals and estimate the required switch-on time. The proposed technique is applicable to any converter operating in DCM, incl... View full abstract»

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  • Output voltage distortion characterization in multilevel PWM converters

    Publication Year: 2004, Page(s):24 - 28
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB) | HTML iconHTML

    One of the main features to consider in the development of new pulsewidth modulations (PWM) for multilevel converters is the high-frequency output-voltage distortion. In this letter, a novel per-switching-cycle figure, the harmonic distortion of order n for switching cycle k(HDn,k), is introduced to quantitatively characterize the output three-phase voltage harmonic distortion of multil... View full abstract»

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  • A high-performance, integrated magnetics scheme for buck-cascaded push-pull converter

    Publication Year: 2004, Page(s):29 - 33
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    This letter proposes a new integrated magnetics scheme for the buck cascaded current-fed push-pull converter. While integrating the transformer and inductor into a common structure, the proposed scheme also alters the operating characteristics of the basic converter. This leads to several advantages such as, continuous output current, zero voltage switching (ZVS), and zero current switching (ZCS) ... View full abstract»

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  • List of reviewers

    Publication Year: 2004, Page(s): 34
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  • IEEE Power Electronics Letters Information for authors

    Publication Year: 2004, Page(s):35 - 36
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  • Advertisement - Leading the field since 1884

    Publication Year: 2004, Page(s): 37
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  • Advertisement - Explore IEL IEEE's most comprehensive resource

    Publication Year: 2004, Page(s): 38
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  • IEEE copyright form

    Publication Year: 2004, Page(s):39 - 40
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  • IEEE Power Electronics Society Information

    Publication Year: 2004, Page(s): c3
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  • IEEE Power Electronics Letters blank page

    Publication Year: 2004, Page(s): c4
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