Work

Decentralized Parametric Stability Certificates for Grid-Forming Converter Control

Year: 2026

Type: article

Abstract: We propose a decentralized framework to analytically guarantee the small-signal stability of future power systems with grid-forming converters. Our approach leverages dynamic loop-shifting techniques to compensate for the lack of passivity in the network dynamics and establishes decentralized parametric stability certificates, depending on the local device-level controls and incorporating the effects of the network. By following practical tuning rules, we are able to ensure plug-and-play operation without centralized coordination. Unlike prior works, our approach accommodates coupled frequency and voltage dynamics, incorporates network dynamics, and does not rely on specific network configurations, offering a general and scalable solution for the integration of power-electronics-based devices into future power systems. We validate our theoretical stability results through numerical case studies in a high-fidelity simulation model.

Source: IEEE Transactions on Control of Network Systems

DOI: 10.1109/tcns.2026.3691172

Authors: Verena Haberle, Xiuqiang He, Linbin Huang, Florian Dorfler, Steven Low

Institutions: ETH Zurich, Tsinghua University, Zhejiang University, California Institute of Technology

Language: English

Topic: Microgrid Control and Optimization

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: green

Funder: European Commission