Inverse optimal control for angle stabilization in converters-based generation
arXiv:2101.11141 · doi:10.23919/ACC53348.2022.9867726
Abstract
In inverse optimal control, the optimality of a given feedback stabilizing controller is a byproduct of the choice of a meaningful, a posteriori defined, cost functional. This allows for a simple tuning comparable to linear quadratic control, also for nonlinear controllers. Our work illustrates the usefulness of this approach in the control of converter-based power systems and networked systems in general, and thereby in finding controllers with topological structure and known optimality properties. In particular, we design an inverse optimal feedback controller that stabilizes the phase angles of voltage-source controlled DC/AC converters at an induced steady state with zero frequency error. The distributed angular droop controller yields active power to angle droop behavior at steady state. Moreover, we suggest a practical implementation of the controller and corroborate our results through simulations on a three-converter system and a numerical comparison with standard frequency droop control.
8 pages, 5 figures
References in corpus (4)
- Hybrid Angle Control and Almost Global Stability of Grid-Forming Power Converters
- On cost design in applications of optimal control
- Steady state characterization and frequency synchronization of a multi-converter power system on high-order manifolds
- Inverse optimal control for angle stabilization in converters-based generation