---
_id: '48682'
abstract:
- lang: eng
text: 'The present study investigates participants'' performance in two different
mental body-rotation tasks (MBRTs) under conditions in which dynamic stability
is challenged in two different balancing conditions: active balance control (Experiment
1), where participants actively maneuver, and re-active balance control (Experiment
2), where participants react to an external perturbation. The two MBRTs induced
either an object-based spatial transformation (based on a same-different judgment)
or an egocentric transformation (based on a left-right judgment). In Experiment
1, 48 participants were tested while standing on an even ground (low balancing
requirements) or on a balance board (high balancing requirements). In Experiment
2, 32 participants performed while either standing still on a vibration plate
or with the vibration plate moving in a low (20 Hz) or high (180 Hz) frequency.
In both experiments, the results for response time and response error revealed
effects of rotation angle and type of task. An effect of balancing condition was
only observed for response error in Experiment 1. More precisely, response times
and response errors increased for higher rotation angles. Also, performance was
better for egocentric than for object-based spatial transformations. However,
the different challenges to dynamic stability in Experiments 1 and 2 did not influence
performance in the two MBRTs (except for response errors in Experiment 1) nor
in a control condition (Experiment 1) without mental rotation.'
article_number: '103156'
article_type: original
author:
- first_name: Kirsten
full_name: Budde, Kirsten
id: '23188'
last_name: Budde
- first_name: Matthias
full_name: Weigelt, Matthias
id: '36388'
last_name: Weigelt
citation:
ama: Budde K, Weigelt M. No effects of different perturbations on the performance
in a mental body-rotation task (MBRT) with egocentric perspective transformations
and object-based transformations. Human Movement Science. 2023;92. doi:10.1016/j.humov.2023.103156
apa: Budde, K., & Weigelt, M. (2023). No effects of different perturbations
on the performance in a mental body-rotation task (MBRT) with egocentric perspective
transformations and object-based transformations. Human Movement Science,
92, Article 103156. https://doi.org/10.1016/j.humov.2023.103156
bibtex: '@article{Budde_Weigelt_2023, title={No effects of different perturbations
on the performance in a mental body-rotation task (MBRT) with egocentric perspective
transformations and object-based transformations}, volume={92}, DOI={10.1016/j.humov.2023.103156},
number={103156}, journal={Human Movement Science}, publisher={Elsevier BV}, author={Budde,
Kirsten and Weigelt, Matthias}, year={2023} }'
chicago: Budde, Kirsten, and Matthias Weigelt. “No Effects of Different Perturbations
on the Performance in a Mental Body-Rotation Task (MBRT) with Egocentric Perspective
Transformations and Object-Based Transformations.” Human Movement Science
92 (2023). https://doi.org/10.1016/j.humov.2023.103156.
ieee: 'K. Budde and M. Weigelt, “No effects of different perturbations on the performance
in a mental body-rotation task (MBRT) with egocentric perspective transformations
and object-based transformations,” Human Movement Science, vol. 92, Art.
no. 103156, 2023, doi: 10.1016/j.humov.2023.103156.'
mla: Budde, Kirsten, and Matthias Weigelt. “No Effects of Different Perturbations
on the Performance in a Mental Body-Rotation Task (MBRT) with Egocentric Perspective
Transformations and Object-Based Transformations.” Human Movement Science,
vol. 92, 103156, Elsevier BV, 2023, doi:10.1016/j.humov.2023.103156.
short: K. Budde, M. Weigelt, Human Movement Science 92 (2023).
date_created: 2023-11-08T09:16:06Z
date_updated: 2023-11-08T09:19:43Z
department:
- _id: '17'
- _id: '266'
doi: 10.1016/j.humov.2023.103156
intvolume: ' 92'
keyword:
- Mental rotation
- Balance control
- Perturbation
- Embodiment
language:
- iso: eng
publication: Human Movement Science
publication_identifier:
issn:
- 0167-9457
publication_status: published
publisher: Elsevier BV
status: public
title: No effects of different perturbations on the performance in a mental body-rotation
task (MBRT) with egocentric perspective transformations and object-based transformations
type: journal_article
user_id: '23188'
volume: 92
year: '2023'
...
---
_id: '29938'
abstract:
- lang: eng
text: Modular solid-state transformers (SSTs) are a promising technology in converting
power from a 10kV three-phase medium voltage to a lower DC-voltage in the range
of 100…400V to provide pure DC power to applications such as electrolyzers for
hydrogen generation, data centers with a DC power distribution and DC micro grids.
Modular SSTs which can be interpreted as modular multilevel converters with an
isolated DC-DC output stage per module, are designed with redundant modules to
increase reliability. Usually, each of the three arms operates independently,
and therefore, only a fixed number of faulty modules can be compensated in each
arm, even if all modules are operational in the remaining two arms. With the proposed
zero-sequence voltage injection, up to 100% more faulty modules can be compensated
in an arm by employing the same hardware. In addition, module power imbalances
are nearly eliminated by utilizing a fundamental frequency zero-sequence voltage.
A dominant 3rd harmonic zero-sequence voltage injection in combination with the
5th, 7th and several higher order harmonics with adaptive (small) amplitudes minimize
the required arm voltages at steady-state. For nominal operation or symmetrical
faults, the proposed technique is equivalent to the well known Min-Max voltage
injection, which already reduces the peak arm voltage by 13.4% compared to a constant
star point potential. A statistical analysis proves, that the expected number
of tolerable faulty modules of the 1MW SST increases by 12% without the need for
additional hardware.
author:
- first_name: Roland
full_name: Unruh, Roland
id: '34289'
last_name: Unruh
- first_name: Jarren
full_name: Lange, Jarren
id: '78801'
last_name: Lange
- first_name: Frank
full_name: Schafmeister, Frank
id: '71291'
last_name: Schafmeister
- first_name: Joachim
full_name: Böcker, Joachim
id: '66'
last_name: Böcker
orcid: 0000-0002-8480-7295
citation:
ama: 'Unruh R, Lange J, Schafmeister F, Böcker J. Adaptive Zero-Sequence Voltage
Injection for Modular Solid-State Transformer to Compensate for Asymmetrical Fault
Conditions. In: 23rd European Conference on Power Electronics and Applications
(EPE’21 ECCE Europe). IEEE; 2021. doi:https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570542'
apa: Unruh, R., Lange, J., Schafmeister, F., & Böcker, J. (2021). Adaptive Zero-Sequence
Voltage Injection for Modular Solid-State Transformer to Compensate for Asymmetrical
Fault Conditions. 23rd European Conference on Power Electronics and Applications
(EPE’21 ECCE Europe). 23rd European Conference on Power Electronics and Applications
(EPE’21 ECCE Europe), Ghent, Belgium. https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570542
bibtex: '@inproceedings{Unruh_Lange_Schafmeister_Böcker_2021, title={Adaptive Zero-Sequence
Voltage Injection for Modular Solid-State Transformer to Compensate for Asymmetrical
Fault Conditions}, DOI={https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570542},
booktitle={23rd European Conference on Power Electronics and Applications (EPE’21
ECCE Europe)}, publisher={IEEE}, author={Unruh, Roland and Lange, Jarren and Schafmeister,
Frank and Böcker, Joachim}, year={2021} }'
chicago: Unruh, Roland, Jarren Lange, Frank Schafmeister, and Joachim Böcker. “Adaptive
Zero-Sequence Voltage Injection for Modular Solid-State Transformer to Compensate
for Asymmetrical Fault Conditions.” In 23rd European Conference on Power Electronics
and Applications (EPE’21 ECCE Europe). IEEE, 2021. https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570542.
ieee: 'R. Unruh, J. Lange, F. Schafmeister, and J. Böcker, “Adaptive Zero-Sequence
Voltage Injection for Modular Solid-State Transformer to Compensate for Asymmetrical
Fault Conditions,” presented at the 23rd European Conference on Power Electronics
and Applications (EPE’21 ECCE Europe), Ghent, Belgium, 2021, doi: https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570542.'
mla: Unruh, Roland, et al. “Adaptive Zero-Sequence Voltage Injection for Modular
Solid-State Transformer to Compensate for Asymmetrical Fault Conditions.” 23rd
European Conference on Power Electronics and Applications (EPE’21 ECCE Europe),
IEEE, 2021, doi:https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570542.
short: 'R. Unruh, J. Lange, F. Schafmeister, J. Böcker, in: 23rd European Conference
on Power Electronics and Applications (EPE’21 ECCE Europe), IEEE, 2021.'
conference:
end_date: 2021-09-10
location: Ghent, Belgium
name: 23rd European Conference on Power Electronics and Applications (EPE'21 ECCE
Europe)
start_date: 2021-09-06
date_created: 2022-02-21T16:31:34Z
date_updated: 2022-09-09T12:01:42Z
department:
- _id: '52'
doi: https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570542
keyword:
- Solid-State Transformer
- Zero sequence voltage
- Fault handling strategy
- Power balance control technique
- Three-phase system
language:
- iso: eng
main_file_link:
- url: https://ieeexplore.ieee.org/abstract/document/9570542
publication: 23rd European Conference on Power Electronics and Applications (EPE'21
ECCE Europe)
publication_identifier:
isbn:
- 978-9-0758-1537-5
publication_status: published
publisher: IEEE
status: public
title: Adaptive Zero-Sequence Voltage Injection for Modular Solid-State Transformer
to Compensate for Asymmetrical Fault Conditions
type: conference
user_id: '34289'
year: '2021'
...