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Grid-Friendly Matching of Synchronous Machines by Tapping into the DC Storage

Jouini, Taouba LU ; Arghir, Catalin and Dörfler, Florian (2016) In IFAC-PapersOnLine 49(22). p.192-197
Abstract

We propose a novel control strategy for grid-forming converters in low-inertia power grids. Our strategy is inspired by identifying the structural similarities between the 3-phase DC/AC converter and the synchronous machine model. We explicitly match these models through modulation control so that they become structurally equivalent. Compared to standard emulation of virtual synchronous machines, our controller relies solely on readily available DC-side measurements and takes into account the natural DC and AC storage elements which are usually neglected. As a result, our controller is generally faster and less vulnerable to delays and measurement inaccuracies. We provide a virtual adaptive oscillator interpretation of our controller... (More)

We propose a novel control strategy for grid-forming converters in low-inertia power grids. Our strategy is inspired by identifying the structural similarities between the 3-phase DC/AC converter and the synchronous machine model. We explicitly match these models through modulation control so that they become structurally equivalent. Compared to standard emulation of virtual synchronous machines, our controller relies solely on readily available DC-side measurements and takes into account the natural DC and AC storage elements which are usually neglected. As a result, our controller is generally faster and less vulnerable to delays and measurement inaccuracies. We provide a virtual adaptive oscillator interpretation of our controller various plug-and-play properties of the closed loop, such as passivity with respect to the DC and AC ports as well as the steady-state droop slopes, which we illustrate in simulations.

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author
; and
publishing date
type
Contribution to journal
publication status
published
subject
in
IFAC-PapersOnLine
volume
49
issue
22
pages
6 pages
publisher
IFAC Secretariat
external identifiers
  • scopus:84994165208
ISSN
2405-8963
DOI
10.1016/j.ifacol.2016.10.395
language
English
LU publication?
no
id
36ea19f1-8e4d-4834-b85a-6aeeb1fea82a
date added to LUP
2019-08-02 13:50:19
date last changed
2020-09-23 07:52:02
@article{36ea19f1-8e4d-4834-b85a-6aeeb1fea82a,
  abstract     = {<p>We propose a novel control strategy for grid-forming converters in low-inertia power grids. Our strategy is inspired by identifying the structural similarities between the 3-phase DC/AC converter and the synchronous machine model. We explicitly match these models through modulation control so that they become structurally equivalent. Compared to standard emulation of virtual synchronous machines, our controller relies solely on readily available DC-side measurements and takes into account the natural DC and AC storage elements which are usually neglected. As a result, our controller is generally faster and less vulnerable to delays and measurement inaccuracies. We provide a virtual adaptive oscillator interpretation of our controller various plug-and-play properties of the closed loop, such as passivity with respect to the DC and AC ports as well as the steady-state droop slopes, which we illustrate in simulations.</p>},
  author       = {Jouini, Taouba and Arghir, Catalin and Dörfler, Florian},
  issn         = {2405-8963},
  language     = {eng},
  month        = {01},
  number       = {22},
  pages        = {192--197},
  publisher    = {IFAC Secretariat},
  series       = {IFAC-PapersOnLine},
  title        = {Grid-Friendly Matching of Synchronous Machines by Tapping into the DC Storage},
  url          = {http://dx.doi.org/10.1016/j.ifacol.2016.10.395},
  doi          = {10.1016/j.ifacol.2016.10.395},
  volume       = {49},
  year         = {2016},
}