Details
| Original language | English |
|---|---|
| Title of host publication | IECON 2021 - 47th Annual Conference of the IEEE Industrial Electronics Society |
| Publisher | IEEE Computer Society |
| ISBN (electronic) | 9781665435543 |
| ISBN (print) | 978-1-6654-0256-9 |
| Publication status | Published - 13 Oct 2021 |
| Event | 47th Annual Conference of the IEEE Industrial Electronics Society, IECON 2021 - Toronto, Canada Duration: 13 Oct 2021 → 16 Oct 2021 |
Publication series
| Name | IECON Proceedings (Industrial Electronics Conference) |
|---|---|
| Volume | 2021-October |
| ISSN (Print) | 1553-572X |
| ISSN (electronic) | 2577-1647 |
Abstract
In this paper, a loss-optimising branch energy control strategy is extended for the case of unbalanced grid faults. This proposed branch energy control strategy uses the circulating currents as degrees of freedom to control the energy of the module capacitors evenly between the branches. In order to generate the setpoints for the circulating currents, an enhanced analytical model of the modular multilevel converter is developed, considering grid asymmetries. Additionally, this paper explores the implementation and validation of the proposed control system in several fault cases. Both the simulation results and the experimental results of the low-voltage test bench show that the proposed control strategy operates reliably with little impact on branch losses.
Keywords
- branch energy balancing, control strategies, modular multilevel converter, unbalanced grid
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Engineering(all)
- Electrical and Electronic Engineering
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IECON 2021 - 47th Annual Conference of the IEEE Industrial Electronics Society. IEEE Computer Society, 2021. (IECON Proceedings (Industrial Electronics Conference); Vol. 2021-October).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Validation of an Extended Loss-Optimised Branch Energy Control for Modular Multilevel Converters under Unbalanced Grid Conditions
AU - Himker, Rebecca
AU - Mertens, Axel
N1 - Funding Information: This research was funded by the German Research Foundation (DFG) – Project 254417319.
PY - 2021/10/13
Y1 - 2021/10/13
N2 - In this paper, a loss-optimising branch energy control strategy is extended for the case of unbalanced grid faults. This proposed branch energy control strategy uses the circulating currents as degrees of freedom to control the energy of the module capacitors evenly between the branches. In order to generate the setpoints for the circulating currents, an enhanced analytical model of the modular multilevel converter is developed, considering grid asymmetries. Additionally, this paper explores the implementation and validation of the proposed control system in several fault cases. Both the simulation results and the experimental results of the low-voltage test bench show that the proposed control strategy operates reliably with little impact on branch losses.
AB - In this paper, a loss-optimising branch energy control strategy is extended for the case of unbalanced grid faults. This proposed branch energy control strategy uses the circulating currents as degrees of freedom to control the energy of the module capacitors evenly between the branches. In order to generate the setpoints for the circulating currents, an enhanced analytical model of the modular multilevel converter is developed, considering grid asymmetries. Additionally, this paper explores the implementation and validation of the proposed control system in several fault cases. Both the simulation results and the experimental results of the low-voltage test bench show that the proposed control strategy operates reliably with little impact on branch losses.
KW - branch energy balancing
KW - control strategies
KW - modular multilevel converter
KW - unbalanced grid
UR - http://www.scopus.com/inward/record.url?scp=85119492732&partnerID=8YFLogxK
U2 - 10.1109/IECON48115.2021.9589690
DO - 10.1109/IECON48115.2021.9589690
M3 - Conference contribution
AN - SCOPUS:85119492732
SN - 978-1-6654-0256-9
T3 - IECON Proceedings (Industrial Electronics Conference)
BT - IECON 2021 - 47th Annual Conference of the IEEE Industrial Electronics Society
PB - IEEE Computer Society
T2 - 47th Annual Conference of the IEEE Industrial Electronics Society, IECON 2021
Y2 - 13 October 2021 through 16 October 2021
ER -