High Step-Up Y-Source Inverter with Reduced DC-Link Voltage Spikes

Hongpeng Liu; Zichao Zhou; Kuan Liu; Poh Chiang Loh; Wei Wang; Dian Guo Xu; Frede Blaabjerg

doi:10.1109/TPEL.2018.2866635

High Step-Up Y-Source Inverter with Reduced DC-Link Voltage Spikes

Hongpeng Liu, Zichao Zhou, Kuan Liu, Poh Chiang Loh, Wei Wang, Dian Guo Xu, Frede Blaabjerg

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

Impedance-source inverters using coupled inductors have been investigated as alternatives for providing high step-up voltages. However, leakage inductances of the coupled inductors have commonly led to lower overall effectiveness, in addition to generating high dc-link voltage spikes. The latter raises voltage stresses of switches, which in turn, may reduce the power levels of the inverters. A high step-up Y-source inverter has therefore been proposed in this paper to provide a high boost with a smooth dc-link voltage ensured by proper recycling of the leakage energy. These features have been verified by comparing simulation and experimental results of an existing Y-source and the proposed inverters. Factors compared are their respective boost ratios, voltage stresses, current stresses, and dc-link voltage spikes.

Original language	English
Article number	8444091
Journal	IEEE Transactions on Power Electronics
Volume	34
Issue number	6
Pages (from-to)	5487-5499
Number of pages	13
ISSN	0885-8993
DOIs	https://doi.org/10.1109/TPEL.2018.2866635
Publication status	Published - Jun 2019

Keywords

Impedance-source inverter
, leakage and coupled inductances
voltage spikes
Y-source inverters (YSI)

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10.1109/TPEL.2018.2866635

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title = "High Step-Up Y-Source Inverter with Reduced DC-Link Voltage Spikes",

abstract = "Impedance-source inverters using coupled inductors have been investigated as alternatives for providing high step-up voltages. However, leakage inductances of the coupled inductors have commonly led to lower overall effectiveness, in addition to generating high dc-link voltage spikes. The latter raises voltage stresses of switches, which in turn, may reduce the power levels of the inverters. A high step-up Y-source inverter has therefore been proposed in this paper to provide a high boost with a smooth dc-link voltage ensured by proper recycling of the leakage energy. These features have been verified by comparing simulation and experimental results of an existing Y-source and the proposed inverters. Factors compared are their respective boost ratios, voltage stresses, current stresses, and dc-link voltage spikes.",

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AU - Zhou, Zichao

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AU - Loh, Poh Chiang

AU - Wang, Wei

AU - Xu, Dian Guo

AU - Blaabjerg, Frede

PY - 2019/6

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N2 - Impedance-source inverters using coupled inductors have been investigated as alternatives for providing high step-up voltages. However, leakage inductances of the coupled inductors have commonly led to lower overall effectiveness, in addition to generating high dc-link voltage spikes. The latter raises voltage stresses of switches, which in turn, may reduce the power levels of the inverters. A high step-up Y-source inverter has therefore been proposed in this paper to provide a high boost with a smooth dc-link voltage ensured by proper recycling of the leakage energy. These features have been verified by comparing simulation and experimental results of an existing Y-source and the proposed inverters. Factors compared are their respective boost ratios, voltage stresses, current stresses, and dc-link voltage spikes.

AB - Impedance-source inverters using coupled inductors have been investigated as alternatives for providing high step-up voltages. However, leakage inductances of the coupled inductors have commonly led to lower overall effectiveness, in addition to generating high dc-link voltage spikes. The latter raises voltage stresses of switches, which in turn, may reduce the power levels of the inverters. A high step-up Y-source inverter has therefore been proposed in this paper to provide a high boost with a smooth dc-link voltage ensured by proper recycling of the leakage energy. These features have been verified by comparing simulation and experimental results of an existing Y-source and the proposed inverters. Factors compared are their respective boost ratios, voltage stresses, current stresses, and dc-link voltage spikes.

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High Step-Up Y-Source Inverter with Reduced DC-Link Voltage Spikes

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