Regelungssysteme (Control Systems)

Steffen Hofmann

Steffen Hofmann

Wiss. Mitarbeiter_in

steffen.hofmann@tu-berlin.de

+49 30 314-79281

Einrichtung Regelungssysteme
Sekretariat EN11
Gebäude EN
Raum EN204
Adresse Einsteinufer 17
10587 Berlin
Consulting Timesby arrangement

Brief Biography

I studied Electrical Engineering and Information Technology (etit) (Diploma) at the Technische Universität Darmstadt, Germany, from 2001 to 2008. During my studies, I completed an internship at the University of Ottawa, Canada. Since 2008 I am working as a research assistant / PhD candidate in the Control Systems Group headed by Prof. Dr.-Ing. Jörg Raisch at the Technische Universität Berlin.

Research

My PhD work has focused on Trajectory Planning and Control of Preferential Crystallization Processes.
I have also worked on Model Reduction and Control of 2D Crystallization Processes.
I am currently working in the are of Energy Management for Microgrids, with a particular focus on Robustness, Resilience and Security aspects.

Projects

I am / have been part of the following projects:
- 04/2021–today · BMWi (7th Energy research program) · Resilient Energy Management System for Microgrids with Focus on Volatile Renewable Generation (RESUME).
- 08/2017–12/2019 · BMWi (6th Energy research program) · Distributed Energy Management for Migrogrids with High Share of Renewable Energy Infeed (EMERGE).
- 04/2013–11/2016 · DFG · Zyklische Prozessführung zur Formgebung facettierter Kristalle.
- 06/2008–12/2011 · DFG · Trajektorienplanung und Regelung von Batchprozessen zur Trennung von Enantiomeren mittels „Bevorzugter Kristallisation“.

Publications

2023

Sampathirao, Ajay Kumar; Hofmann, Steffen; Raisch, Jörg; Hans, Christian A.
Distributed conditional cooperation model predictive control of interconnected microgrids
Automatica, 157 :111258
2023
Herausgeber: Elsevier
ISSN: 0005-1098

2021

Sampathirao, A. K.; Hofmann, S.; Raisch, J.; Hans, C. A.
Distributed Conditional Cooperation Model Predictive Control of Interconnected Microgrids
Preprint
2021

2019

Löser, I.; Sampathirao, A. K.; Hofmann, S.; Raisch, J.
Fallback Strategies in Operation Control of Microgrids with Communication Failures
58th IEEE Conference on Decision and Control (CDC), Seite 3885-3891
Dezember 2019

2017

Hofmann, Steffen; Bajcinca, Naim; Raisch, Jörg; Sundmacher, Kai
Optimal control of univariate and multivariate population balance systems involving external fines removal
Chemical Engineering Science, 168 :101–123
2017
ISSN: 0009-2509

2015

Bajcinca, Naim; Hofmann, Steffen; Bielievtsov, Dmytro; Sundmacher, Kai
Approximate ODE models for population balance systems
Computers & Chemical Engineering, 74 :158–168
2015
ISSN: 0098-1354
Bajcinca, Naim; Hofmann, Steffen; Eisenschmidt, Holger; Sundmacher, Kai
Generalizing ODE modeling structure for multivariate systems with distributed parameters
IFAC-PapersOnLine, 48 (8) :240–247
2015
ISSN: 2405-8963

2014

Hofmann, Steffen; Raisch, Jörg
Inversionsbasierte optimale Steuerung von Batch-Kristallisationsprozessen zur Enantiomertrennung
at – Automatisierungstechnik, 62 (2) :78–91
2014
ISSN: 0178-2312
Bajcinca, Naim; Hofmann, Steffen; Sundmacher, Kai
Method of moments over orthogonal polynomial bases
Chemical Engineering Science, 119 :295–309
2014
ISSN: 0009-2509

2013

Hofmann, Steffen; Raisch, Jörg
Solutions to inversion problems in preferential crystallization of enantiomers–Part II: Batch crystallization in two coupled vessels
Chemical Engineering Science, 88 :48–68
2013
ISSN: 0009-2509

2012

Bajcinca, Naim; Hofmann, Steffen
Optimal control of multivariate crystallization processes with size-dependent growth kinetics
2012 IEEE International Conference on Control Applications (CCA), Seite 476–481
IEEE Control Systems Society (CSS)
Oktober 2012
ISBN
978-1-4673-4504-0
Hofmann, Steffen; Raisch, Jörg
Solutions to inversion problems in preferential crystallization of enantiomers–part I: Batch crystallization in a single vessel
Chemical Engineering Science, 80 :253–269
2012
ISSN: 0009-2509

2011

Hofmann, Steffen; Eicke, Matthias J.; Elsner, Martin Peter; Seidel-Morgenstern, Andreas; Raisch, Jörg
A Worst-Case Observer for Impurities in Enantioseparation by Preferential Crystallization
In Pistikopoulos, E. N. and Georgiadis, Michael C. and Kokossis, Antonis C., Editor, 21st European Symposium on Computer Aided Process Engineering (ESCAPE-21)Band29, Seite 860–864
In Pistikopoulos, E. N. and Georgiadis, Michael C. and Kokossis, Antonis C., Editor
Herausgeber: Elsevier
2011
ISBN
978-0-444-53895-6
Bajcinca, Naim; Hofmann, Steffen
Optimal control for batch crystallization with size-dependent growth kinetics
Proceedings of the 2011 American Control Conference (ACC), Seite 2558–2565
2011
ISBN
978-1-4577-0081-1
Bajcinca, Naim; Menarin, Henrique A.; Hofmann, Steffen
Optimal control of multidimensional population balance systems for crystal shape manipulation
, Proc. 18th IFAC World CongressBand44ausIFAC Proceedings Volumes, Seite 9842–9849
2011

2010

Hofmann, Steffen; Raisch, Jörg
Application of Optimal Control Theory to a Batch Crystallizer using Orbital Flatness
In Hägglund, Tore, Editor, 16th Nordic Process Control Workshop, Seite 61–67
Nordic Working Group on Process Control
In Hägglund, Tore, Editor
Herausgeber: Lund University, Department of Automatic Control
August 2010
Hofmann, Steffen; Eicke, Matthias J.; Elsner, Martin Peter; Raisch, Jörg
Innovative Control Strategies for Coupled Preferential Crystallization
Proceedings of WCPT6 2010 - World Congress on Particle Technology
April 2010
ISBN
978-3-00-030570-2
Bajcinca, Naim; Hofmann, Steffen; Raisch, Jörg; Sundmacher, Kai
Robust and optimal control scenarios for batch crystallization processes
In Pierucci, Sauro and Ferraris, Guido Buzzi, Editor, 20th European Symposium on Computer Aided Process Engineering (ESCAPE-20), Seite 1605–1610
In Pierucci, Sauro and Ferraris, Guido Buzzi, Editor
Herausgeber: Ischia, Italy
2010
ISBN
978-0-4445-3570-2
Eicke, Matthias J.; Hofmann, Steffen; Raisch, Jörg; Elsner, Martin Peter; Seidel-Morgenstern, Andreas
Separation of Enantiomers by Coupled Preferential Crystallization - Impact of Initial Conditions on Process Performance
Proceedings of the 2010 AIChE Annual Meeting
2010