Efficient modular multilevel converter based on active-forced-commutated hybrid packed u-cells for HV networks

School of Engineering

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Efficient modular multilevel converter based on active-forced-commutated hybrid packed u-cells for HV networks
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Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review

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Efficient modular multilevel converter based on active-forced-commutated hybrid packed u-cells for HV networks. / Darwish, A.
IET ACDC 2019 Conference. 2019.

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review

Bibtex

@inproceedings{5a27f09a77b949989d3df523199d5182,

title = "Efficient modular multilevel converter based on active-forced-commutated hybrid packed u-cells for HV networks",

abstract = "High-voltage DC (HVDC) converter topologies have been more desirable in the off-shore wind energy applications to increase the efficiency and reduce the losses. In this context, the paper presents a modified structure for modular multilevel voltage source converter (VSC) topology where the conduction and switching losses can be significantly reduced. As the conduction losses of the semiconductor devices affect the total efficiency of such systems, replacing part of the Insulated Gate Bipolar Transistor (IGBT) devices with thyristors in the conduction path of the proposed topology can reduce the total losses in the normal operation. Thus, both IGBTs and thyristors are implemented in a hybrid configuration. In this configuration, the IGBT devices are responsible for voltage/current transitions between the positive and negative parts of the waveforms while the thyristor devices are responsible for conducting the currents in the other constant polarity regions. MATLAB simulations and scaled-down experiments show that the modified structure can reduce the total losses of the HVDC converter significantly.",

keywords = "Active forced commutation (AFC), High-voltage DC (HVDC) converters, Modular Multilevel Converter (MMC), Voltage source converter (VSC), Bipolar semiconductor devices, Insulated gate bipolar transistors (IGBT), MATLAB, Power converters, Thyristors, Topology, Wind power, Converter topologies, Forced commutation, High voltage DC (HVDC), Hybrid configurations, Matlab simulations, Modular multi-level converters, Off-shore wind energy, Voltage source converters, HVDC power transmission",

author = "A. Darwish",

year = "2019",

language = "English",

booktitle = "IET ACDC 2019 Conference",

}

RIS

TY - GEN

T1 - Efficient modular multilevel converter based on active-forced-commutated hybrid packed u-cells for HV networks

AU - Darwish, A.

PY - 2019

Y1 - 2019

N2 - High-voltage DC (HVDC) converter topologies have been more desirable in the off-shore wind energy applications to increase the efficiency and reduce the losses. In this context, the paper presents a modified structure for modular multilevel voltage source converter (VSC) topology where the conduction and switching losses can be significantly reduced. As the conduction losses of the semiconductor devices affect the total efficiency of such systems, replacing part of the Insulated Gate Bipolar Transistor (IGBT) devices with thyristors in the conduction path of the proposed topology can reduce the total losses in the normal operation. Thus, both IGBTs and thyristors are implemented in a hybrid configuration. In this configuration, the IGBT devices are responsible for voltage/current transitions between the positive and negative parts of the waveforms while the thyristor devices are responsible for conducting the currents in the other constant polarity regions. MATLAB simulations and scaled-down experiments show that the modified structure can reduce the total losses of the HVDC converter significantly.

AB - High-voltage DC (HVDC) converter topologies have been more desirable in the off-shore wind energy applications to increase the efficiency and reduce the losses. In this context, the paper presents a modified structure for modular multilevel voltage source converter (VSC) topology where the conduction and switching losses can be significantly reduced. As the conduction losses of the semiconductor devices affect the total efficiency of such systems, replacing part of the Insulated Gate Bipolar Transistor (IGBT) devices with thyristors in the conduction path of the proposed topology can reduce the total losses in the normal operation. Thus, both IGBTs and thyristors are implemented in a hybrid configuration. In this configuration, the IGBT devices are responsible for voltage/current transitions between the positive and negative parts of the waveforms while the thyristor devices are responsible for conducting the currents in the other constant polarity regions. MATLAB simulations and scaled-down experiments show that the modified structure can reduce the total losses of the HVDC converter significantly.

KW - Active forced commutation (AFC)

KW - High-voltage DC (HVDC) converters

KW - Modular Multilevel Converter (MMC)

KW - Voltage source converter (VSC)

KW - Bipolar semiconductor devices

KW - Insulated gate bipolar transistors (IGBT)

KW - MATLAB

KW - Power converters

KW - Thyristors

KW - Topology

KW - Wind power

KW - Converter topologies

KW - Forced commutation

KW - High voltage DC (HVDC)

KW - Hybrid configurations

KW - Matlab simulations

KW - Modular multi-level converters

KW - Off-shore wind energy

KW - Voltage source converters

KW - HVDC power transmission

M3 - Conference contribution/Paper

BT - IET ACDC 2019 Conference

ER -

Research

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Keywords