Journal
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY
Volume 10, Issue 3, Pages 1501-1512Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSTE.2018.2887147
Keywords
Linear quadratic regulator (LQR); virtual synchronous machine (VSM); voltage source converter (VSC); swing equation; adaptive control
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Funding
- European Union's Horizon 2020 research and innovation programme [691800]
- H2020 Societal Challenges Programme [691800] Funding Source: H2020 Societal Challenges Programme
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This paper presents a novel virtual synchronous machine controller for converters in power systems with a high share of renewable resources. Using a linear quadratic regulator-based optimization technique, the optimal state feedback gain is determined to adaptively adjust the emulated inertia and damping constants according to the frequency disturbance in the system, while simultaneously preserving a tradeoff between the critical frequency limits and the required control effort. Two control designs are presented and compared against the open-loop model. The proposed controllers are integrated into a state-of-the-art converter control scheme and verified through electromagnetic transient (EMT) simulations.
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