---
_id: '29940'
abstract:
- lang: eng
  text: A full-bridge modular multilevel converter (MMC) is compared to a half-bridge-based
    MMC for high-current low-voltage DC-applications such as electrolysis, arc welding
    or datacenters with DC-power distribution. Usually, modular multilevel converters
    are used in high-voltage DC-applications (HVDC) in the multiple kV-range, but
    to meet the needs of a high-current demand at low output voltage levels, the modular
    converter concept requires adaptations. In the proposed concept, the MMC is used
    to step-down the three-phase medium-voltage of 10 kV. Therefore, each module is
    extended by an LLC resonant converter to adapt to the specific electrolyzers DC-voltage
    range of 142-220V and to provide galvanic isolation. The proposed MMC converter
    with full-bridge modules uses half the number of modules compared to a half-bridge-based
    MMC while reducing the voltage ripple by 78% and capacitor losses by 64% by rearranging
    the same components to ensure identical costs and volume. For additional reliability,
    a new robust algorithm for balancing conduction losses during the bypass phase
    is presented.
author:
- first_name: Roland
  full_name: Unruh, Roland
  id: '34289'
  last_name: Unruh
- first_name: Frank
  full_name: Schafmeister, Frank
  id: '71291'
  last_name: Schafmeister
- first_name: Norbert
  full_name: Fröhleke, Norbert
  last_name: Fröhleke
- first_name: Joachim
  full_name: Böcker, Joachim
  id: '66'
  last_name: Böcker
  orcid: 0000-0002-8480-7295
citation:
  ama: 'Unruh R, Schafmeister F, Fröhleke N, Böcker J. 1-MW Full-Bridge MMC for High-Current
    Low-Voltage (100V-400V) DC-Applications. In: <i>PCIM Europe Digital Days 2020;
    International Exhibition and Conference for Power Electronics, Intelligent Motion,
    Renewable Energy and Energy Management</i>. VDE; 2020.'
  apa: Unruh, R., Schafmeister, F., Fröhleke, N., &#38; Böcker, J. (2020). 1-MW Full-Bridge
    MMC for High-Current Low-Voltage (100V-400V) DC-Applications. <i>PCIM Europe Digital
    Days 2020; International Exhibition and Conference for Power Electronics, Intelligent
    Motion, Renewable Energy and Energy Management</i>. PCIM Europe digital days 2020,
    Germany.
  bibtex: '@inproceedings{Unruh_Schafmeister_Fröhleke_Böcker_2020, title={1-MW Full-Bridge
    MMC for High-Current Low-Voltage (100V-400V) DC-Applications}, booktitle={PCIM
    Europe digital days 2020; International Exhibition and Conference for Power Electronics,
    Intelligent Motion, Renewable Energy and Energy Management}, publisher={VDE},
    author={Unruh, Roland and Schafmeister, Frank and Fröhleke, Norbert and Böcker,
    Joachim}, year={2020} }'
  chicago: Unruh, Roland, Frank Schafmeister, Norbert Fröhleke, and Joachim Böcker.
    “1-MW Full-Bridge MMC for High-Current Low-Voltage (100V-400V) DC-Applications.”
    In <i>PCIM Europe Digital Days 2020; International Exhibition and Conference for
    Power Electronics, Intelligent Motion, Renewable Energy and Energy Management</i>.
    VDE, 2020.
  ieee: R. Unruh, F. Schafmeister, N. Fröhleke, and J. Böcker, “1-MW Full-Bridge MMC
    for High-Current Low-Voltage (100V-400V) DC-Applications,” presented at the PCIM
    Europe digital days 2020, Germany, 2020.
  mla: Unruh, Roland, et al. “1-MW Full-Bridge MMC for High-Current Low-Voltage (100V-400V)
    DC-Applications.” <i>PCIM Europe Digital Days 2020; International Exhibition and
    Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy
    Management</i>, VDE, 2020.
  short: 'R. Unruh, F. Schafmeister, N. Fröhleke, J. Böcker, in: PCIM Europe Digital
    Days 2020; International Exhibition and Conference for Power Electronics, Intelligent
    Motion, Renewable Energy and Energy Management, VDE, 2020.'
conference:
  end_date: 2020-07-08
  location: Germany
  name: PCIM Europe digital days 2020
  start_date: 2020-07-07
date_created: 2022-02-21T16:42:30Z
date_updated: 2023-10-20T11:52:39Z
department:
- _id: '52'
keyword:
- Cascaded H-Bridge
- Solid-State Transformer
- Capacitor voltage ripple
- Zero sequence voltage
- Full-Bridge
language:
- iso: eng
main_file_link:
- url: https://ieeexplore.ieee.org/abstract/document/9178138
publication: PCIM Europe digital days 2020; International Exhibition and Conference
  for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
publication_identifier:
  isbn:
  - 978-3-8007-5245-4
publication_status: published
publisher: VDE
status: public
title: 1-MW Full-Bridge MMC for High-Current Low-Voltage (100V-400V) DC-Applications
type: conference
user_id: '34289'
year: '2020'
...