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    Novel Nine-Switch PWM Rectifier-Inverter Topology For Three-Phase UPS Applications Abstract

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    Raj Ganesh
    This document proposes a novel nine-switch converter topology for uninterruptible power supply (UPS) applications. The topology uses only nine insulated-gate bipolar transistors (IGBTs) for AC to AC conversion through a quasi DC link circuit. This provides sinusoidal input and output waveforms, unity input power factor, and low manufacturing cost compared to a 12-switch back-to-back converter topology. The operating principle and a dedicated space vector modulation scheme are presented, and the performance is verified through experiments on a 1.5 kVA prototyping UPS system.

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    Attribution Non-Commercial (BY-NC)
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    Novel Nine-Switch PWM Rectifier-Inverter Topology For Three-Phase UPS Applications Abstract

    Uploaded by

    Raj Ganesh
    36 views3 pages
    This document proposes a novel nine-switch converter topology for uninterruptible power supply (UPS) applications. The topology uses only nine insulated-gate bipolar transistors (IGBTs) for AC to AC conversion through a quasi DC link circuit. This provides sinusoidal input and output waveforms, unity input power factor, and low manufacturing cost compared to a 12-switch back-to-back converter topology. The operating principle and a dedicated space vector modulation scheme are presented, and the performance is verified through experiments on a 1.5 kVA prototyping UPS system.

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    Novel Nine

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    This document proposes a novel nine-switch converter topology for uninterruptible power supply (UPS) applications. The topology uses only nine insulated-gate bipolar transistors (IGBTs) for AC to AC conversion through a quasi DC link circuit. This provides sinusoidal input and output waveforms, unity input power factor, and low manufacturing cost compared to a 12-switch back-to-back converter topology. The operating principle and a dedicated space vector modulation scheme are presented, and the performance is verified through experiments on a 1.5 kVA prototyping UPS system.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    36 views3 pages

    Novel Nine-Switch PWM Rectifier-Inverter Topology For Three-Phase UPS Applications Abstract

    Uploaded by

    Raj Ganesh
    This document proposes a novel nine-switch converter topology for uninterruptible power supply (UPS) applications. The topology uses only nine insulated-gate bipolar transistors (IGBTs) for AC to AC conversion through a quasi DC link circuit. This provides sinusoidal input and output waveforms, unity input power factor, and low manufacturing cost compared to a 12-switch back-to-back converter topology. The operating principle and a dedicated space vector modulation scheme are presented, and the performance is verified through experiments on a 1.5 kVA prototyping UPS system.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    of 3

    Novel Nine-Switch PWM Rectifier-

    Inverter Topology
    For Three-Phase UPS Applications
    Abstract:
    A novel three-phase PWM rectifier-inverter topology
    (Fig. 2) for UPS applications is proposed in this paper. The
    topology uses only nine IGBT devices for AC/AC
    conversion through a quasi d.c. link circuit. This converter
    topology features sinusoidal inputs and outputs, unity
    input power factor, and more importantly, low
    manufacturing cost. The operating principle of the
    converter is elaborated and a dedicated space vector
    modulation scheme is presented. The performance of the
    proposed converter is verified by experiments on a 1.5
    kVA prototyping UPS system
    This paper proposes a novel nine-switch converter
    topology for online UPS applications. As shown in Fig. 1b,
    the proposed UPS system has a simple and balanced
    structure which contains only one power conversion
    stage. Under normal operation, the power is delivered to
    the critical load partially through ac/ac direct conversion
    and partially through the dc circuit. When the utility
    power fails, the battery in the dc circuit delivers power to
    the load.
    Compared with the PWM back-to-back converter that
    employs 12 active switches, the proposed converter only
    uses nine switches, leading to the reduction of
    manufacturing cost as well as device power losses. In
    addition, the proposed UPS system features regulated
    sinusoidal inputs and outputs, unity input power factor,
    and seamless transition between the normal operation
    and power failure modes.

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