The D-decomposition method allows to design control structures with prescribed locations of closed loop poles. Unlike the root locus method, D-decomposition natively handles two variable regulator parameters, which makes it suitable for more complex control structures. Moreover, an extension to more than two variable parameters is straightforward. In this paper, the advantages of the D-decomposition method are illustrated by synthesizing a robust low-order current regulator for a grid-connected voltage source inverter (VSI) with LCL filter. It is shown how to visualize the complete region in the low dimensional regulator parameter space satisfying certain robust performance criteria (with robust stability being a special case). The paper concludes by simulation results validating the robustness properties of the designed low-order regulator under substantial grid impedance variations.
|Title of host publication||29th IEEE International Symposium on Industrial Electronics|
|Subtitle of host publication||17-19 June 2020, online conference hosted in Delft, The Netherlands|
|Number of pages||8|
|Publication status||Published - 2020|
|Event||29th IEEE International Symposium on Industrial Electronics - Delft, Netherlands|
Duration: 17 Jun 2020 → 19 Jun 2020
|Conference||29th IEEE International Symposium on Industrial Electronics|
|Abbreviated title||ISIE 2020|
|Period||17/06/20 → 19/06/20|
|Other||Virtual/online event due to COVID-19|
Bibliographical noteGreen Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
- Current control
- robust performance
- robust stability