2025

• Halvorsen, Ivar Johan; Skogestad, Sigurd. (2025) Liquid-only transfer in dividing wall columns – Analytical minimum vapor expressions. Separation and Purification Technology
  Academic article
• Ränger, Lena-Marie; Halvorsen, Ivar Johan; Grützner, Thomas; Skogestad, Sigurd. (2025) What can go wrong in a dividing wall column and how to detect it. Separation and Purification Technology
  Academic article

2024

• Ränger, Lena-Marie; Halvorsen, Ivar Johan; Grützner, Thomas; Skogestad, Sigurd. (2024) Understanding Temperature Profiles of Distillation Columns. Industrial & Engineering Chemistry Research
  Academic article

2023

• Lundby, Erlend Torje Berg; Robinson, Haakon; Rasheed, Adil; Halvorsen, Ivar Johan; Gravdahl, Jan Tommy. (2023) Sparse Neural Networks with Skip-Connections for Identification of Aluminum Electrolysis Cell. IEEE Conference on Decision and Control. Proceedings
  Academic article
• Lundby, Erlend Torje Berg; Rasheed, Adil; Halvorsen, Ivar Johan; Reinhardt, Dirk Peter; Gros, Sebastien Nicolas; Gravdahl, Jan Tommy. (2023) Deep active learning for nonlinear system identification. arXiv.org
  Academic article
• Lundby, Erlend Torje Berg; Rasheed, Adil; Gravdahl, Jan Tommy; Halvorsen, Ivar Johan. (2023) Sparse deep neural networks for modeling aluminum electrolysis dynamics. Applied Soft Computing
  Academic article

2021

• Lundby, Erlend Torje Berg; Rasheed, Adil; Gravdahl, Jan Tommy; Halvorsen, Ivar Johan. (2021) A novel hybrid analysis and modeling approach applied to aluminum electrolysis process. Journal of Process Control
  Academic article

2020

• Halvorsen, Ivar Johan; Pivac, Ivan; Bezmalinovic, Dario; Barbir, Frano; Zenith, Federico. (2020) Electrochemical low-frequency impedance spectroscopy algorithm for diagnostics of PEM fuel cell degradation. International Journal of Hydrogen Energy
  Academic article

2019

• Halvorsen, Ivar Johan; Dejanović, Igor; Olujić, Žarko; Skogestad, Sigurd. (2019) Thermal coupling opportunities for floating natural gas liquefaction plants. Chemical engineering research & design
  Academic article
• Lukač, Goran; Halvorsen, Ivar Johan; Olujíc, Žarko; Dejanović, Igor. (2019) On controllability of a fully thermally coupled four-product dividing wall column. Chemical engineering research & design
  Academic article

2018

• Dejanovic, Igor; Halvorsen, Ivar Johan; Jansen, Helmut; Olujic, Zarko. (2018) Hydraulic Design of Thermally Coupled Columns and a DWC for NGL Fractionation Plants. Chemical and biochemical engineering quarterly
  Academic article
• Lukac, Goran; Halvorsen, Ivar Johan; Olujic, Zarko; Dejanovic, Igor. (2018) On controllability of four-product dividing wall columns. Chemical Engineering Transactions
  Academic article
• Halvorsen, Ivar Johan; Dejanovic, Igor; Olujic, Zarko; Skogestad, Sigurd. (2018) Dividing wall columns for natural gas liquefaction plants. Chemical Engineering Transactions
  Academic article

2016

• Klages, Merle; Tjønnås, Johannes; Zenith, Federico; Halvorsen, Ivar Johan; Scholta, Joachim. (2016) Dual Control of low concentration CO poisoning by Anode Air Bleeding of Low Temperature Polymer Electrolyte Membrane Fuel Cells. Journal of Power Sources
  Academic article
• Tjønnås, Johannes; Zenith, Federico; Halvorsen, Ivar Johan; Klages, Merle; Scholta, Joachim. (2016) Control of Reversible Degradation Mechanisms in Fuel Cells: Mitigation of CO contamination. IFAC-PapersOnLine
  Academic article
• Halvorsen, Ivar Johan. (2016) Handling of variable wireless latency and updating frequency in PI controllers. IFAC-PapersOnLine
  Academic article
• Halvorsen, Ivar Johan; Dejanovic, Igor; Maråk, Knut Arild; Olujic, Zarko; Skogestad, Sigurd. (2016) Dividing-Wall Column for Fractionation of Natural Gas Liquids in Floating Liquefied Natural Gas Plants. Chemical Engineering & Technology
  Academic article

2015

• Le, Quang Khoa; Halvorsen, Ivar Johan; Pajalic, Oleg; Skogestad, Sigurd. (2015) Dividing wall columns for heterogeneous azeotropic distillation. Chemical engineering research & design
  Academic article

2014

• Dejanovi, Igor; Halvorsen, Ivar Johan; Skogestad, Sigurd; Jansen, Helmut; Oluji, Arko. (2014) Hydraulic design, technical challenges and comparison of alternative configurations of a four-product dividing wall column. Chemical Engineering and Processing
  Academic article
• Ikram, Waqas; Jansson, Niklas; Harvei, Trygve; Aakvaag, Niels; Halvorsen, Ivar Johan; Petersen, Stig. (2014) Wireless communication in process control loop: Requirements analysis, industry practices and experimental evaluation. IEEE Conference on Emerging Technologies and Factory Automation
  Academic article

2013

• Halvorsen, Ivar Johan; Dejanovic, Igor; Skogestad, Sigurd; Olujic, Zarko. (2013) Internal configurations for a multi-product dividing wall column. Chemical engineering research & design
  Academic literature review
• Ghadrdan, Maryam; Halvorsen, Ivar Johan; Skogestad, Sigurd. (2013) Manipulation of vapour split in Kaibel distillation arrangements. Chemical Engineering and Processing
  Academic article
• Ghadrdan, Maryam; Halvorsen, Ivar Johan; Skogestad, Sigurd. (2013) Dynamic compensation of static estimators from Loss method. Elsevier IFAC Publications / IFAC Proceedings series
  Academic article
• Dejanovic, Igor; Halvorsen, Ivar Johan; Skogestad, Sigurd; Jansen, Helmut; Olujic, Zarko. (2013) Cost-effective design of energy efficient four-product dividing wall columns. Chemical Engineering Transactions
  Academic article

2012

• Ghadrdan, Maryam; Grimholt, Chriss; Skogestad, Sigurd; Halvorsen, Ivar Johan. (2012) Estimation of Primary Variables from Combination of Secondary Measurements: Comparison of Alternative Methods for Monitoring and Control. Computer-aided chemical engineering
  Academic article
• Dwivedi, Deeptanshu; Halvorsen, Ivar Johan; Skogestad, Sigurd. (2012) Control structure selection for four-product Petlyuk column. Chemical Engineering and Processing
  Academic article
• Dwivedi, Deeptanshu; Halvorsen, Ivar Johan; Skogestad, Sigurd. (2012) Dynamic behaviour and control of extended Petlyuk distillation arrangements. Computer-aided chemical engineering
  Academic article
• Dwivedi, Deeptanshu; Halvorsen, Ivar Johan; Skogestad, Sigurd. (2012) Control structure selection for three-product Petlyuk (dividing-wall) column. Chemical Engineering and Processing
  Academic article
• Dwivedi, Deeptanshu; Strandberg, Jens; Halvorsen, Ivar Johan; Preisig, Heinz A.; Skogestad, Sigurd. (2012) Active Vapor Split Control for Dividing-Wall Columns. Industrial & Engineering Chemistry Research
  Academic article
• Dwivedi, Deeptanshu; Strandberg, Jens; Halvorsen, Ivar Johan; Skogestad, Sigurd. (2012) Steady State and Dynamic Operation of Four-Product Dividing-Wall (Kaibel) Columns: Experimental Verification. Industrial & Engineering Chemistry Research
  Academic article
• Dwivedi, Deeptanshu; Halvorsen, Ivar Johan; Skogestad, Sigurd. (2012) Dynamic behaviour and control of extended Petlyuk distillation arrangements.
  Academic chapter/article/Conference paper
• Ghadrdan, Maryam; Skogestad, Sigurd; Halvorsen, Ivar Johan. (2012) Economically Optimal Control of Kaibel Distillation Column: Fixed Boilup Rate. Elsevier IFAC Publications / IFAC Proceedings series
  Academic article

2011

• Ghadrdan, Maryam; Halvorsen, Ivar Johan; Skogestad, Sigurd. (2011) Optimal operation of Kaibel distillation columns. Chemical engineering research & design
  Academic article
• Ghadrdan, Maryam; Halvorsen, Ivar Johan; Skogestad, Sigurd. (2011) A Shortcut Design for Kaibel Columns Based on Minimum Energy Diagrams. Computer-aided chemical engineering
  Academic article
• Halvorsen, Ivar Johan; Skogestad, Sigurd; Dejanovic, Igor; Matijasevic, Ljubica; Olujic, Zarko. (2011) Multi-Product Dividing Wall Columns: A Simple and Effective Assessment and Conceptual Design Procedure. Chemical Engineering Transactions
  Academic article
• Skogestad, Sigurd; Halvorsen, Ivar Johan. (2011) Energy efficient distillation. Journal of Natural Gas Science and Engineering
  Academic article
• Dejanovic, I; Matijasevic, L; Halvorsen, Ivar Johan; Skogestad, Sigurd; Jansen, H; Kaibel, Björn. (2011) Designing four-product dividing wall columns for separation of a multicomponent aromatics mixture. Chemical engineering research & design
  Academic article

2010

• Michelsen, Finn Are; Lund, Berit Floor; Halvorsen, Ivar Johan. (2010) Selection of Optimal, Controlled Variables for the TEALARC LNG Process. Industrial & Engineering Chemistry Research
  Academic article
• Dejanović, Igor; Matijašević, Ljubica; Olujić, Žarko; Halvorsen, Ivar J.; Skogestad, Sigurd; Jansen, Helmut. (2010) Conceptual Design and Comparison of Four-Products Dividing Wall Columns for Separation of a Multicomponent Aromatics Mixture.
  Academic chapter/article/Conference paper
• Michelsen, Finn Are; Halvorsen, Ivar Johan; Lund, Berit Floor; Wahl, Per Eilif. (2010) Modeling and Simulation for Control of the TEALARC Liquified Natural Gas Process. Industrial & Engineering Chemistry Research
  Academic article
• Kvernland, Martin Krister; Halvorsen, Ivar J.; Skogestad, Sigurd. (2010) Model Predictive Control of a Kaibel Distillation Column. Elsevier IFAC Publications / IFAC Proceedings series
  Academic article
• Shamsuzzoha, Mohammad; Skogestad, Sigurd; Halvorsen, Ivar J.. (2010) On-Line PI Controller tuning Using Closed-Loop Setpoint Response. Elsevier IFAC Publications / IFAC Proceedings series
  Academic article
• Michelsen, Finn Are; Halvorsen, Ivar Johan; Lund, Berit Floor. (2010) The impact of process design decisions on operability and control of an LNG process. Journal of Natural Gas Science and Engineering
  Academic article
• Ghadrdan, Maryam; Halvorsen, Ivar J.; Skogestad, Sigurd. (2010) Optiomal operation of thermally-coupled Kaibel distillation columns.
  Academic chapter/article/Conference paper
• Shamsuzzoha, Mohammad; Skogestad, Sigurd; Halvorsen, Ivar J.. (2010) A simple approach for on-line PI controller tuning using closed-loop setpont responses.
  Academic chapter/article/Conference paper
• Halvorsen, Ivar J.; Dejanović, Igor; Matijašević, Ljubica; Olujić, Žarko; Skogestad, Sigurd. (2010) Establishing internal configuration of dividing wall column for separation of a multicoponent aromatics mixture.
  Academic chapter/article/Conference paper
• Strandberg, Jens; Skogestad, Sigurd; Halvorsen, Ivar J.. (2010) Practical control of dividing-wall columns.
  Academic chapter/article/Conference paper
• Shamsuzzoha, Mohammad; Skogestad, Sigurd; Halvorsen, Ivar Johan. (2010) A simple approach for on-line PI controller tuning using closed-loop setpoint responses. Computer-aided chemical engineering
  Academic article

2009

• Halvorsen, Ivar J.; Skogestad, Sigurd. (2009) Minimum Energy Operation of Petlyuk Distillation Columns - Nonsharp Product Specification.
  Academic chapter/article/Conference paper
• Foss, Bjarne Anton; Halvorsen, Ivar Johan. (2009) Dynamic optimization of the LNG value chain. Elsevier Elsevier
  Academic anthology/Conference proceedings

2004

• Halvorsen, IJ; Skogestad, Sigurd. (2004) Shortcut Analysis of Optimal Operation of Petlyuk Distillation. Industrial & Engineering Chemistry Research
  Academic article
• Lundteigen, Mary Ann; Halvorsen, Ivar J.. (2004) General report - Plantwide Control – Optimal Operation and Control of Offshore Operations (CORD report). IFE/SINTEF/Marintek IFE/SINTEF/Marintek
  Report
• Dyrkoren, Erik; Fyrvik, Torstein; Lundteigen, Mary Ann; Halvorsen, Ivar J.; Welch, Robin. (2004) Operational Experience Review – Optimal Operation and Control of Offshore Installations (CORD report). IFE/SINTEF/Marintek IFE/SINTEF/Marintek
  Report
• Dyrkoren, Erik; Welch, Robin; Lundteigen, Mary Ann; Pehrsen, Morten; Halvorsen, Ivar J.. (2004) Huldra – Experiences from NNM Operations – Optimal Operation and Control of Offshore Installations (CORD report). IFE/SINTEF/Marintek IFE/SINTEF/Marintek
  Report
• Dyrkoren, Erik; Welch, Robin; Lundteigen, Mary Ann; Pehrsen, Morten; Halvorsen, Ivar J.. (2004) Åsgard – Experiences from Subsea Operations – Optimal Operation and Control of Offshore Installations (CORD report). IFE/SINTEF/Marintek IFE/SINTEF/Marintek
  Report

2003

• Halvorsen, Ivar J.; Skogestad, Sigurd; Alstad, Vidar. (2003) Optimal selection of controlled variables. Industrial & Engineering Chemistry Research
  Academic article
• Halvorsen, Ivar J.; Skogestad, Sigurd. (2003) Minimum Energy Consumption in Multicomponent Distillation. 3. More Than Three Products and Generalized Petlyuk Arrangem. Industrial & Engineering Chemistry Research
  Academic article
• Halvorsen, Ivar J.; Skogestad, Sigurd. (2003) Minimum Energy Consumption in Multicomponent Distillation. 1. Vmin Diagram for a Two-Product Column. Industrial & Engineering Chemistry Research
  Academic article
• Halvorsen, Ivar J.; Skogestad, Sigurd. (2003) Minimum Energy Consumption in Multicomponent Distillation. 2. Three-Product Petlyuk Arrangements. Industrial & Engineering Chemistry Research
  Academic article

2001

• Halvorsen, Ivar Johan. (2001) Minimum energy requirements in complex distillation arrangements. IST Press IST Press
  Academic monograph
• Halvorsen, Ivar J.. (2001) Minimum Energy Requirements in Complex Distillation Arrangements. Norges teknisk-naturvitenskapelige universitet Dr. ingeniøravhandling, 0809-103X (2001:43)
  Doctoral dissertation

2000

• Halvorsen, Ivar J.; Serra, M.; Skogestad, Sigurd. (2000) Evaluation of self-optimising control structures for an integrated petlyuk distillation column. Hungarian Journal of Industrial Chemistry
  Academic article
• Halvorsen, Ivar J.; Skogestad, Sigurd. (2000) Theory of distillation.
  Academic chapter/article/Conference paper

1999

• Halvorsen, Ivar J.; Skogestad, Sigurd. (1999) Optimal operation of Petlyuk distillation: steady-state behavior. Journal of Process Control
  Academic article

1997

• Halvorsen, Ivar I.; Skogestad, Sigurd. (1997) Optimizing control of Petlyuk distillation : understanding the steady-state behavior. Computers and Chemical Engineering
  Academic article

1995

• Slupphaug, Geir; Halvorsen, Ivar. (1995) Forprosjekt: Regulering og overvåking av komplekse industrianlegg. NTH. Institutt for teknisk kybernetikk NTH. Institutt for teknisk kybernetikk
  Report