Blar i Institutt for elektro, IT, og kybernetikk på tittel
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Parameter and State Estimation of Large-Scale Complex Systems Using Python Tools
(Journal article; Peer reviewed, 2015)This paper discusses the topics related to automating parameter, disturbance and state estimation analysis of large-scale complex nonlinear dynamic systems using free programming tools. For large-scale complex systems, ... -
Parameter Estimation for a Gas Lifting Oil Well Model Using Bayes' Rule and the Metropolis–Hastings Algorithm
(Peer reviewed; Journal article, 2022)Oil well models are frequently used in the oil production process. Estimation of unknown parameters of these models has long been a question of great interest in the oil industry field. Data collected from an oil well ... -
Parameter estimation for externally simulated thermal network models
(Peer reviewed; Journal article, 2019)Obtaining accurate dynamic models of building thermal behaviour requires a statistically solid foundation for estimating unknown parameters. This is especially important for thermal network grey-box models, since all their ... -
Parameter estimation for grey-box models of building thermal behaviour
(Journal article; Peer reviewed, 2018)Good models for building thermal behaviour are an important part of developing building energy management systems that are capable of reducing energy consumption for space heating through model predictive control. A popular ... -
Parametric sensitivity analysis of rotor angle stability indicators
(Journal article; Peer reviewed, 2021)With the increasing penetration rate of Power Electronic Converter (PEC) based technologies, the electrical power systems are facing the problem of transient stability since the PEC based technologies do not contribute to ... -
Parametric sensitivity analysis of rotor angle stability indicators: Simulation case
(Journal article; Peer reviewed, 2021)Because power electronic converter (PEC) dominated power generators do not provide the rotational inertia and the proportion of synchronous generators is reducing, the modern electrical grids are confronting a challenge ... -
PCR/PLSR optimization based on noise covariance estimation and Kalman filtering theory
(Journal article; Peer reviewed, 2002)The theoretical connection between principal component regression (PCR) and partial least squares regression (PLSR) on one hand and Kalman filtering (KF) on the other is known from earlier work. In the present paper we ... -
PD/PID controller tuning based on model approximations: Model reduction of some unstable and higher order nonlinear models
(Journal article; Peer reviewed, 2017)A model reduction technique based on optimization theory is presented, where a possible higher order system/model is approximated with an unstable DIPTD model by using only step response data. The DIPTD model is used to ... -
Pedagogical Perspectives of Interdisciplinary Teaching and Research: An Energy System Modelling Outlook in Relation to Energy Informatics
(Peer reviewed; Journal article, 2023)The purpose of this paper is to present and discuss pedagogical frameworks and approaches to developing, delivering, and evaluating a new interdisciplinary course within the domain of energy informatics at both Master’s ... -
Performance optimal PI controller tuning based on integrating plus time delay models
(Journal article; Peer reviewed, 2018)A method for tuning PI controller parameters, a prescribed maximum time delay error or a relative time delay error is presented. The method is based on integrator plus time delay models. The integral time constant is linear ... -
Petroleum dependence in developing countries with an emphasis on Nepal and potential keys
(Peer reviewed; Journal article, 2023)The use of petroleum as a leading source across the globe accounts for overall energy demand. However, despite what may appear to be a declining contribution of petroleum to the world's energy supply, overall consumption ... -
Physics-Informed Gas Lifting Oil Well Modelling using Neural Ordinary Differential Equations
(Peer reviewed; Journal article, 2023)Modelling of oil well systems is important for a wide range of petroleum scientific and oil industrial processes. Considering the uncertainty of the measurements and the demand for empirical knowledge, a purely first-principle ... -
PLS post-processing by similarity transformation: a simple alternative to OPLS
(Journal article; Peer reviewed, 2005)Several methods for orthogonal signal correction (OSC) based on pre-processing of the modeling data have been developed in recent years, and OPLS (orthogonal projections to latent structures) is a well known algorithm. ... -
PLS score-loading correspondence and a bi-orthogonal factorization
(Journal article; Peer reviewed, 2002)It is established industrial practice to use the correspondence between partial least squares (PLS) scores and loadings or loading weights as a means for process monitoring and control. Deviations from the normal operating ... -
Population balance modelling for fertilizer granulation process
(Journal article; Peer reviewed, 2018)Few granulation plants are operated optimally. It is common to operate granulation plants below their maximum design capacity, and in many cases, periodic instabilities may also occur. From a process control and optimization ... -
Power Converters Dominated Power Systems
(Chapter, 2020)The transition to a low-carbon society is the driving force pushing the traditional power system to increase the volume of non-synchronous technologies which mainly use power electronic converters (PEC) as an interface to ... -
Power Sharing in Three-Level NPC Inverter Based Three-Phase Four-Wire Islanding Microgrids With Unbalanced Loads
(Peer reviewed; Journal article, 2023)The droop-based control schemes are widely used for power-sharing and control of the isolated microgrids. The conventional droop control scheme with inner current and voltage controllers can work effectively under ideal ... -
Power System Stability Using Modelica
(Journal article; Peer reviewed, 2014-12-09)This paper is concerned with power system modeling using the Modelica language in comparison to a traditional simulation tool. Though most common power system simulation tools are computationally efficient and reasonably ... -
Prescriptive analytics for optimal multi-use battery energy storage systems operation: State-of-the-art and research directions
(Peer reviewed; Journal article, 2023)This paper presents the state-of-the-art and latest advances in implementing multi-use practices on BESS applications to the power system grid. Representative papers on modeling and optimization methods were selected, most ... -
Pressure wave propagation in Managed Pressure Drilling- model comparison with real life data
(Peer reviewed; Journal article, 2019)Drilling for oil and gas is a complex process, involving pumping of fluid through kilometers of pipes. Even though the drilling fluid has a high speed of sound (˜1000 m/s), the large lengths involved make pressure wave ...