Frequency and voltage control of hybrid AC/DC networks
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Authors
Watson, JD
Lestas, I
Publication Date
2018Journal Title
Proceedings of the IEEE Conference on Decision and Control
Conference Name
2018 IEEE Conference on Decision and Control (CDC)
ISSN
0743-1546
ISBN
9781538613955
Publisher
IEEE
Volume
2018-December
Pages
3445-3450
Type
Conference Object
This Version
AM
Metadata
Show full item recordCitation
Watson, J., & Lestas, I. (2018). Frequency and voltage control of hybrid AC/DC networks. Proceedings of the IEEE Conference on Decision and Control, 2018-December 3445-3450. https://doi.org/10.1109/CDC.2018.8619412
Abstract
Hybrid AC/DC networks are a key technology for future electrical power
systems, due to the increasing number of converter-based loads and distributed
energy resources. In this paper, we consider the design of control schemes for
hybrid AC/DC networks, focusing especially on the control of the interlinking
converters (ILC(s)). We present two control schemes: firstly for decentralized
primary control, and secondly, a distributed secondary controller. In the
primary case, the stability of the controlled system is proven in a general
hybrid AC/DC network which may include asynchronous AC subsystems. Furthermore,
it is demonstrated that power-sharing across the AC/DC network is significantly
improved compared to previously proposed dual droop control. The proposed
scheme for secondary control guarantees the convergence of the AC system
frequencies and the average DC voltage of each DC subsystem to their nominal
values respectively. An optimal power allocation is also achieved at
steady-state. The applicability and effectiveness of the proposed algorithms
are verified by simulation on a test hybrid AC/DC network in MATLAB / Simscape
Power Systems.
Sponsorship
ERC starting grant 679774
Funder references
European Research Council (679774)
Identifiers
External DOI: https://doi.org/10.1109/CDC.2018.8619412
This record's URL: https://www.repository.cam.ac.uk/handle/1810/288065
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