Details
| Original language | English |
|---|---|
| Title of host publication | 2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 413-420 |
| Number of pages | 8 |
| ISBN (electronic) | 9781728169903 |
| ISBN (print) | 978-1-7281-6989-7, 978-1-7281-6991-0 |
| Publication status | Published - 2020 |
| Event | 11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020 - Dubrovnik, Croatia Duration: 28 Sept 2020 → 1 Oct 2020 |
Abstract
In this paper, the sequence impedance-based small-signal modelling is exemplarily applied to the synchronverter control approach with three different inner control setups and compared against other popular grid-forming concepts, namely droop control and the virtual synchronous generator (VSG). The synchronverter variations differ in terms of whether an inner dual loop voltage control (DLVC), a single loop voltage control (SLVC) or an open loop voltage control (OLVC) concept is utilised. These models are derived in a common sequence impedance framework which is a suitable approach to analyse the robustness of different converter controls in a generalised form. First, impedance models are derived, which do not only reveal the existence of a mirrored frequency as an image of the disturbance frequency shifted by two times the fundamental frequency, but also predict the effect of the different grid-forming control variations on the system stability. These models are evaluated against other control methods and validated by time-domain simulations and experimental results. The applicability of the models is confirmed by a close correlation between sequence impedance model, time-domain simulations, experimental results as well as based on a case study.
Keywords
- converter cluster, grid-forming controls, harmonic stability, microgrid, small-signal sequence impedance
ASJC Scopus subject areas
- Energy(all)
- Energy Engineering and Power Technology
- Energy(all)
- Renewable Energy, Sustainability and the Environment
- Engineering(all)
- Electrical and Electronic Engineering
- Mathematics(all)
- Control and Optimization
Sustainable Development Goals
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020. Institute of Electrical and Electronics Engineers Inc., 2020. p. 413-420 9244356.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Sequence Impedance Characteristics of Grid-Forming Converter Controls
AU - Dokus, Marc
AU - Mertens, Axel
N1 - Funding Information: This orkw is supported by German Research oundationF DFG (project identification number 359921210).
PY - 2020
Y1 - 2020
N2 - In this paper, the sequence impedance-based small-signal modelling is exemplarily applied to the synchronverter control approach with three different inner control setups and compared against other popular grid-forming concepts, namely droop control and the virtual synchronous generator (VSG). The synchronverter variations differ in terms of whether an inner dual loop voltage control (DLVC), a single loop voltage control (SLVC) or an open loop voltage control (OLVC) concept is utilised. These models are derived in a common sequence impedance framework which is a suitable approach to analyse the robustness of different converter controls in a generalised form. First, impedance models are derived, which do not only reveal the existence of a mirrored frequency as an image of the disturbance frequency shifted by two times the fundamental frequency, but also predict the effect of the different grid-forming control variations on the system stability. These models are evaluated against other control methods and validated by time-domain simulations and experimental results. The applicability of the models is confirmed by a close correlation between sequence impedance model, time-domain simulations, experimental results as well as based on a case study.
AB - In this paper, the sequence impedance-based small-signal modelling is exemplarily applied to the synchronverter control approach with three different inner control setups and compared against other popular grid-forming concepts, namely droop control and the virtual synchronous generator (VSG). The synchronverter variations differ in terms of whether an inner dual loop voltage control (DLVC), a single loop voltage control (SLVC) or an open loop voltage control (OLVC) concept is utilised. These models are derived in a common sequence impedance framework which is a suitable approach to analyse the robustness of different converter controls in a generalised form. First, impedance models are derived, which do not only reveal the existence of a mirrored frequency as an image of the disturbance frequency shifted by two times the fundamental frequency, but also predict the effect of the different grid-forming control variations on the system stability. These models are evaluated against other control methods and validated by time-domain simulations and experimental results. The applicability of the models is confirmed by a close correlation between sequence impedance model, time-domain simulations, experimental results as well as based on a case study.
KW - converter cluster
KW - grid-forming controls
KW - harmonic stability
KW - microgrid
KW - small-signal sequence impedance
UR - http://www.scopus.com/inward/record.url?scp=85097564031&partnerID=8YFLogxK
U2 - 10.1109/PEDG48541.2020.9244356
DO - 10.1109/PEDG48541.2020.9244356
M3 - Conference contribution
AN - SCOPUS:85097564031
SN - 978-1-7281-6989-7
SN - 978-1-7281-6991-0
SP - 413
EP - 420
BT - 2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020
Y2 - 28 September 2020 through 1 October 2020
ER -