Skip to Main content Skip to Navigation
Conference papers

Droop-controlled inverter-based microgrids are robust to clock drifts

Abstract : Clock drift in digital controllers is of great relevance in many applications. Since almost all real clocks exhibit drifts, this applies in particular to networks composed of several individual units, each of which being operated with its individual clock. In the present work, we investigate the effect of clock drifts in inverter-based microgrids. Via a suitable model that incorporates this phenomenon, we prove that clock inaccuracies hamper synchronization in microgrids, in which the individual inverters are operated with a fixed uniform constant electrical frequency. In addition, we show that the well-known frequency droop control renders stability of a lossless microgrid robust with respect to clock inaccuracies. This claim is established by using stability results reported previously by the authors for lossless inverter-based microgrids with ideal clocks. We also discuss the effect of clock drifts on active power sharing. The analysis is illustrated via a simulation example.
Complete list of metadatas

Cited literature [21 references]  Display  Hide  Download

https://hal-centralesupelec.archives-ouvertes.fr/hal-01262151
Contributor : Myriam Baverel <>
Submitted on : Monday, June 29, 2020 - 3:10:31 PM
Last modification on : Wednesday, September 16, 2020 - 4:51:20 PM

File

schiffer_etal_clockdrifts_acc2...
Files produced by the author(s)

Identifiers

Citation

Johannes Schiffer, Roméo Ortega, Jörg Raisch, Christian Hans. Droop-controlled inverter-based microgrids are robust to clock drifts. 2015 American Control Conference (ACC), Jul 2015, Chicago, United States. ⟨10.1109/acc.2015.7171082⟩. ⟨hal-01262151⟩

Share

Metrics

Record views

236

Files downloads

28