[HTML][HTML] Optimization algorithms as robust feedback controllers

A Hauswirth, Z He, S Bolognani, G Hug… - Annual Reviews in Control, 2024‏ - Elsevier
Mathematical optimization is one of the cornerstones of modern engineering research and
practice. Yet, throughout all application domains, mathematical optimization is, for the most …

[HTML][HTML] Adaptive real-time grid operation via online feedback optimization with sensitivity estimation

M Picallo, L Ortmann, S Bolognani, F Dörfler - Electric Power Systems …, 2022‏ - Elsevier
In this paper we propose an approach based on an Online Feedback Optimization (OFO)
controller with grid input–output sensitivity estimation for real-time grid operation, eg, at …

Deployment of an online feedback optimization controller for reactive power flow optimization in a distribution grid

L Ortmann, C Rubin, A Scozzafava… - 2023 IEEE PES …, 2023‏ - ieeexplore.ieee.org
Optimization is an essential part of power grid operation and lately, Online Optimization
methods have gained traction. One such method is Online Feedback Optimization (OFO) …

Model-free nonlinear feedback optimization

Z He, S Bolognani, J He, F Dörfler… - IEEE Transactions on …, 2023‏ - ieeexplore.ieee.org
Feedback optimization is a control paradigm that enables physical systems to autonomously
reach efficient operating points. Its central idea is to interconnect optimization iterations in a …

[HTML][HTML] Tuning and testing an Online Feedback Optimization controller to provide curative distribution grid flexibility

L Ortmann, F Böhm, F Klein-Helmkamp, A Ulbig… - Electric Power Systems …, 2024‏ - Elsevier
Due to more volatile generation, flexibility will become more important in transmission grids.
One potential source of this flexibility can be distribution grids. A flexibility request from the …

Nonconvex distributed feedback optimization for aggregative cooperative robotics

G Carnevale, N Mimmo, G Notarstefano - Automatica, 2024‏ - Elsevier
Distributed aggregative optimization is a recently emerged framework in which the agents of
a network want to minimize the sum of local objective functions, each one depending on the …

Sampled-data online feedback equilibrium seeking: Stability and tracking

G Belgioioso, D Liao-McPherson… - 2021 60th IEEE …, 2021‏ - ieeexplore.ieee.org
This paper proposes a general framework for constructing feedback controllers that drive
complex dynamical systems to" efficient" steady-state (or slowly varying) operating points …

[HTML][HTML] A holistic model-less approach for the optimal real-time control of power electronics-dominated AC microgrids

JC Olives-Camps, ÁR del Nozal, JM Mauricio… - Applied Energy, 2023‏ - Elsevier
This paper addresses the problem of optimally operating a set of grid-forming devices in an
AC microgrid when a detailed network model is not available. The main aim of the approach …

[HTML][HTML] Online Feedback Optimization of compressor stations with model adaptation using Gaussian process regression

M Zagorowska, M Degner, L Ortmann, A Ahmed… - Journal of Process …, 2023‏ - Elsevier
Abstract Online Feedback Optimization is a method used to steer the operation of a process
plant to its optimal operating point without explicitly solving a nonlinear constrained …

Aggregative feedback optimization for distributed cooperative robotics

G Carnevale, N Mimmo, G Notarstefano - IFAC-PapersOnLine, 2022‏ - Elsevier
In this paper we propose Aggregative Tracking Feedback, ie, a novel distributed feedback
optimization law that steers network systems to a steady state, which is optimal according to …