Browsing Publikasjoner fra CRIStin - NTNU by Title
Now showing items 9722-9741 of 37384
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Dynamic load on a Francis turbine runner from simulations based on measurements
(Journal article; Peer reviewed, 2014)The frequency of the Nordic power grid has become more volatile during recent years. This gives rise to two effects in synchronous machines. Firstly, as grid frequency changes the rotational speed of synchronous machines ... -
Dynamic metabolism modeling as a decision-support tool for urban water utilities applied to the upstream of the water system in Oslo, Norway
(Journal article; Peer reviewed, 2014)The paper presents, first, the ‘Dynamic Metabolism Model’ (DMM), developed by the authors, followed by an application to the city of Oslo, capital city of Norway. The time period considered for the analysis is 2013-2043. ... -
Dynamic Model Development of Wind Turbine Drivetrains by Using Sensor Measurements
(Chapter, 2021)This paper aims to analyze the feasibility of establishing a dynamic drivetrain model from condition monitoring measurements. In this study SCADA data and further sensor data is analyzed from a 1.5MW wind turbine, provided ... -
Dynamic model of a small scale concentrating solar cooker with rock bed heat storage
(Peer reviewed; Journal article, 2016)This study presents a dynamic model for a concen-trating solar energy collector with an integrated rockbed heat storage system. The model is based onnumerical integration of a set of conservation equa-tions for mass, ... -
A dynamic model of two-phase flow for simulating gas kick and facilitating model-based control in drilling operations
(Peer reviewed; Journal article, 2021)A low-order two-phase dynamic flow model for drilling operations with gas kick is developed. The purpose is to enable fast and robust simulation of the behavior and propagation of influx gas in the bore hole, and the effects ... -
Dynamic Modeling and Anti-swing Control of Double Pendulum Payload System of Overhead Crane
(Chapter, 2022)In this paper, an anti-swing controller for a double pendulum payload system is proposed using the method of backstepping based on dynamic models. Lagrange equations are used to derive the dynamic equations of the overhead ... -
Dynamic modeling and optimization of sustainable algal production with uncertainty using multivariate Gaussian processes
(Journal article; Peer reviewed, 2018)Dynamic modeling is an important tool to gain better understanding of complex bioprocesses and to determine optimal operating conditions for process control. Currently, two modeling methodologies have been applied to ... -
Dynamic Modeling and Real-Time Simulation of a Ship Hybrid Power System Using a Mixed-Modeling Approach
(Journal article, 2020)The electrification of a ship power-train is growing at a fast pace to improve efficiency and reduce emissions. The implementation of new technologies requires test and validation using various modeling approaches. However, ... -
Dynamic Modeling and Stability Analysis of Onboard DC Power System for Hybrid Electric Ships
(Chapter, 2019)This paper presents the dynamic modeling and stability analysis of the onboard DC power system, applicable to hybrid electric ships. The system topology is established with a special focus on the integration of the energy ... -
Dynamic modeling of local district heating grids with prosumers: A case study for Norway
(Journal article; Peer reviewed, 2018)District heating (DH) will play an important role in the future fossil-free energy systems by enabling increased utilization of waste heat and renewable heat sources to cover buildings' heat demand. A prerequisite for this ... -
Dynamic modeling of the solvent regeneration part of a CO2 capture plant
(Journal article; Peer reviewed, 2013)In this work, a system of unit operations is modeled and implemented in MATLAB for dynamic simulation of the regeneration part of the CO2 capture process. The system consists of a stripper, a reboiler and a condenser, and ... -
Dynamic modeling, simulation, and testing of a marine DC hybrid power system
(Peer reviewed; Journal article, 2020)The hybridization of power systems offers the low-emission and energy-efficient marine vessels. However, it increases the complexity of the power system. Design, analysis, control, and optimization of such a sophisticated ... -
Dynamic Modeling, Stability Analysis and Power Management of Shipboard DC Hybrid Power Systems
(Journal article; Peer reviewed, 2021)This paper proposes a framework for the stability analysis and control testing of marine hybrid power systems with DC power architecture. The dynamics of such active systems are increasingly influenced by interactive modes ... -
Dynamic Modelling and Analysis of Three Floating Wind Turbine Concepts with Vertical Axis Rotor
(Proceedings of the twenty-fifth International Ocean and Polar Engineering Conference;ISOPE 2015, Chapter, 2015)Recently there is an increasing interest in the development of offshore floating vertical axis wind turbines (FVAWTs). A FVAWT mounted on a semi-submersible has been proposed by several researchers, and a FVAWT with a spar ... -
Dynamic modelling and force analysis of a knuckle boom crane using screw theory
(Journal article; Peer reviewed, 2018)This article presents a method for determination of dynamic reaction forces in knuckle boom cranes. The method is based on the dynamic modelling procedure, which is an extension of Kane’s equations of motion. An efficient ... -
Dynamic modelling and simulation of the Graz Cycle for a renewable energy system
(Peer reviewed; Journal article, 2024)Critical atmospheric carbon dioxide levels and, in response, an increasing shift toward variable renewable energy sources causes the need of transient operation for thermal power plants coupled with carbon capture and ... -
Dynamic modelling and validation of an air‐to‐water reversible R744 heat pump for high energy demand buildings
(Peer reviewed; Journal article, 2021)This paper presents a reversible heat pump based on CO2 as the refrigerant, able to provide heating, cooling, and domestic hot water to high energy demand buildings. The unit was developed and tested under the EU H2020 ... -
Dynamic modelling of chronotype and hypo/manic and depressive symptoms in young people with emerging mental disorders
(Peer reviewed; Journal article, 2023) -
Dynamic Modelling of Fuel Cell Systems for Electric Propulsion
(Chapter, 2021)In this paper, a dynamic model is developed for hybrid electric powertrains with fuel cell and batteries. The hybrid powertrain is considered mainly for marine propulsion with dynamic load, although the study can be ... -
Dynamic modelling of local low-temperature heating grids: A case study for Norway
(Journal article; Peer reviewed, 2017)Today's district heating (DH) networks in Norway are 2nd and 3rd generation systems, with supply temperatures ranging from 80 to 120 °C. In new developments, it is desirable to shift to 4th generation, low-temperature ...