Background and activities

PhD. candidate in the Center for Research Based Innovation (SFI) SUBPRO (Subsea Production and Processing). The focus of my work is improved control of subsea processes. Our current research focuses on improved control of separation equipment (GLCC, hydrocyclones), subsea multiphase pumps, anti slug control and more.

My research interests are nonlinear control, adaptive control, process control and system modelling.

My main supervisor is Associate Professor Christian Holden and my co-supervisors are Prof. Sigurd Skogestad and Prof. Olav Egeland

Scientific, academic and artistic work

Displaying a selection of activities. See all publications in the database

Journal publications

Part of book/report

  • Kim, HyungJu; Lundteigen, Mary Ann; Hafver, Andreas; Pedersen, Frank Børre; Skofteland, Gunleiv; Holden, Christian; Ohrem, Sveinung Johan. (2018) Application of Systems-Theoretic Process Analysis to a Subsea Gas Compression System. Safety and Reliability – Safe Societies in a Changing World. Proceedings of ESREL 2018, June 17-21, 2018, Trondheim, Norway.
  • Ohrem, Sveinung Johan; Holden, Christian. (2018) Controller and observer design for first order LTI systems with unknown dynamics. ICCMA 2018 Proceedings of the 6th International Conference on Control, Mechatronics and Automation.
  • Ohrem, Sveinung Johan; Kristoffersen, Torstein Thode; Holden, Christian. (2017) Adaptive Feedback Linearizing Control of a Gas Liquid Cylindrical Cyclone. 2017 IEEE Conference on Control Technology and Applications (CCTA).

Report/dissertation

  • Ohrem, Sveinung Johan; Pettersen, Kristin Ytterstad; Møller, Ments Tore; Slettebø, Sverre Wendt. (2015) Development of a Dynamic Positioning System for Merlin WR200 ROV. 2015.

Others

  • Ohrem, Sveinung Johan; Holden, Christian. (2018) Controller and observer design for first order LTI systems with unknown dynamics. The 6th International Conference on Control, Mechatronics and Automation . ACM; Tokyo. 2018-10-12 - 2018-10-14.
  • Ohrem, Sveinung Johan; Kim, HyungJu; Lundteigen, Mary Ann; Holden, Christian. (2018) A Comparison of Hazards and Efficiencies of Conventional and Adaptive Control Algorithms using Systems‐Theoretic Process Analysis. European Stamp Workshop and Conference ; Amsterdam. 2018-10-31 - 2018-11-02.
  • Ohrem, Sveinung Johan; Kristoffersen, Torstein Thode; Holden, Christian. (2018) Model-Based and Model-Free Optimal Control of a Gas Liquid Cylindrical Cyclone. 3rd IFAC Workshop on Automatic Control in Offshore Oil and Gas Production . IFAC; Esbjerg. 2018-05-30 - 2018-06-01.
  • Ohrem, Sveinung Johan. (2017) Control of separators. BN Subsea Consortium Workshop . BN Consortium; Rio de Janeiro. 2017-04-24 - 2017-04-25.
  • Ohrem, Sveinung Johan; Holden, Christian. (2017) Modeling and Nonlinear Model Predictive Control of a Subsea Pump Station. Control Conference Africa . IFAC; Johannesburg. 2017-12-07 - 2017-12-08.
  • Ohrem, Sveinung Johan; Holden, Christian; Jahanshahi, Esmaeil; Skogestad, Sigurd. (2017) L1 Adaptive Anti-Slug Control. American Control Conference 2017 . American Automatic Control Council; Seattle. 2017-05-24 - 2017-05-26.
  • Ohrem, Sveinung Johan; Kristoffersen, Torstein Thode; Holden, Christian. (2017) Adaptive Feedback Linearizing Control of a Gas Liquid Cylindrical Cyclone. Conference on Control Technology and Applications . IEEE; Hawaii. 2017-08-28 - 2017-08-30.