Blar i Institutt for elektro, IT, og kybernetikk på tittel
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Informative score-loading-contribution plots for multi-response process monitoring
(Journal article; Peer reviewed, 2009)The projection based multivariate data methods of principal component regression (PCR) and partial least squares regression (PLSR) are well established in the eld of process monitoring. Use of score and loading plots for ... -
Innovative primary frequency control in low‐inertia power systems based on wide‐area RoCoF sharing
(Journal article, 2020)Future plans for integration of large non-synchronous generation and the expansion of the power system in the Nordic countries are a concern to transmission system operators due to the common interconnections and electricity ... -
Interleaved high gain DC-DC converter for integrating solar PV source to DC bus
(Peer reviewed; Journal article, 2019)In this paper, a novel non-isolated DC-DC converter topology is proposed for solar photovoltaic (PV) application. The proposed converter is constructed from an interleaved boost converter (IBC) to reduce the input current ... -
Is engineering mathematics really an engineering tool?
(Conference report, 1999)A set of final exams at Telemark State University has been studied to check if there is a symbiotic relationship between the mathematical tool and some technical courses offered at the Electrical Engineering Department. ... -
Lessons to be learned from industry/university cooperation on undergraduate project work
(Conference report, 2000)Experiments with cooperative learning started in 1976, and has since 1982 project work in groups has been the hallmark of the pedagogical approach at Hogskolen i Telemark. This paper examines some attributes of 18 senior ... -
Linearization for Analysis of a Hydropower Model using Python API for OpenModelica
(Journal article; Peer reviewed, 2018)Even though almost all processes in the real world are described by nonlinear models, nonlinear theory for analysis of these models is far less developed than the theory for linear models. Therefore model linearization is ... -
Load prioritization technique to guarantee the continuous electric supply for essential loads in rural microgrids
(Peer reviewed; Journal article, 2021)Microgrid (MG) is one of the practical and best concepts to provide energy access to rural communities, where electric grid extension is not techno-economically feasible. Since the trend of load consumption is not uniform ... -
Low-Viscosity Nonaqueous Sulfolane-Amine-Methanol Solvent Blend for Reversible CO2 Capture
(Peer reviewed; Journal article, 2022)In this work, the absorption–desorption performance of CO2 in six new solvent blends of amine (diisopropylamine (DPA), 2-amino-2-methyl-1-propanol (AMP), methyldiethanolamine (MDEA), diethanolamine (DEA), diisopropanolamine ... -
Machine Learning in Python for Weather Forecast based on Freely Available Weather Data
(Journal article; Peer reviewed, 2018)Forecasting weather conditions is important for, e.g., operation of hydro power plants and for flood management. Mechanistic models are known to be computationally demanding. Hence, it is of interest to develop models that ... -
Markov Chain Monte Carlo Methods Applied to a Synchronous Generator Model
(Peer reviewed; Journal article, 2023)Markov Chain Monte Carlo (MCMC) approaches are widely used for tuning model parameters to fit process measurements. While modern probabilistic programming languages (PPLs) such as Stan, PyMC, and Turing have made it easier ... -
Mathematical modelling of mass transfer of paramagnetic ions through an inert membrane by the transient magnetic concentration gradient force. https://
(Peer reviewed; Journal article, 2020)The objective of this work is to suggest a mathematical model for mass-transfer of a paramagnetic electrolyte, nickel(ii)chloride solution, through an inert, thin membrane from one chamber to another under the influence ... -
Mechanistic Model of an Air Cushion Surge Tank for Hydro Power Plants
(Peer reviewed; Journal article, 2022)Due to the increasing use of renewable energy sources, and to counter the effects of fossil fuels, renewable dispatchable hydro power can be used for balancing load and generation from intermittent sources (solar and wind). ... -
Microevolutionary system identification and climate response predictions
(Peer reviewed; Journal article, 2022)Microevolutionary system identification was introduced Ergon (2022), with the specific purpose to show that predictions of genetic adaptations to climate change require that environmental reference values are properly ... -
Microevolutionary system identification and climate response predictions by use of BLUP prediction error method
(Peer reviewed; Journal article, 2023)Animals and other organisms in wild populations may adjust to climate change by means of plasticity and evolution, and it is an important task to find the contributions from each of these effects. Attempts to solve this ... -
Mixture of term assignments, tutorials, laboratory assignments and problem based learning for masters degree in engineering: an alternative to traditional learning and examination forms
(Conference report, 1999)We look at a course as a process of continuous learning and assessment of knowledge transfer to the students. In this context, we use a mixture of term assignments, tutorials, laboratory assignments and Problem Based ... -
Model based control for run-of-river system. Part 1: Model implementation and tuning
(Journal article; Peer reviewed, 2015)Optimal operation and control of a run-of-river hydro power plant depends on good knowledge of the elements of the plant in the form of models. River reaches are often considered shallow channels with free surfaces. A ... -
Model based control for run-of-river system. Part 2: Comparison of control structures
(Journal article; Peer reviewed, 2015)Optimal operation and control of a run-of-river hydro power plant depend on good knowledge of the elements of the plant in the form of models. Both the control architecture of the system, i.e. the choice of inputs and ... -
Model Based Early Kick/Loss Detection and Attenuation with Topside Sensing in Managed Pressure Drilling
(Peer reviewed; Journal article, 2020)Early kick/loss detection is a crucial part of safe well control, and it plays a major role in the reduction of risk and non-productive time in drilling. In conventional drilling, topside sensing is used for early kick/loss ... -
Model based flow measurement using venturi umes for return flow during drilling
(Journal article; Peer reviewed, 2017)In an oil well drilling operation, a proper knowledge of the return fluid flowrate is necessary both for the stabilization of the bottom hole pressure of the well and also as a primary indication of a kick or loss. In ... -
Model Predictive Control with Integral Action: A simple MPC algorithm
(Journal article; Peer reviewed, 2013)A simple Model Predictive Control (MPC) algorithm of velocity (incremental) form is presented. The proposed MPC controller is insensitive to slowly varying system and measurement trends and therefore has integral action. ...