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Contact and nozzle wear from 100 interruptions for a puffer-type air load break switch
(Journal article; Peer reviewed, 2017)One type test requirement for medium voltage load break switches is to interrupt 100 consecutive "mainly active loads". A puffer-type switch with axial-blown arc has been tested according to the 630 A/24 kV ratings. The ... -
Contact Angle and Condensation of a CO2 Droplet on a Solid Surface
(Journal article; Peer reviewed, 2019)Anthropogenic release of carbon dioxide (CO2) is a major contribution to manmade increase in global warming. Carbon capture and storage (CCS) is a necessary technology for lowering CO2 emissions to an acceptable level that ... -
Continuous Hydrothermal Flexibility Coordination Under Wind Power Uncertainty
(Peer reviewed; Journal article, 2022)This paper develops a stochastic continuous-time optimization model for coordinating the operation of flexibility in a hybrid hydro-thermal-wind power system. The developed model gives insight for investigating the short-term ... -
Contraction Analysis for a MMC Converter
(Chapter; Peer reviewed, 2019)One of the present barriers to the widespread use of Modular Multilevel Converters (MMC) is the complexity of its control. We use a suitable degree of simplifications of the MMC converters, under given conditions, to allow ... -
Control Challenges and Possibilities for Offshore Wind Farms
(SINTEF Energi. Rapport;, Research report, 2013)Electricity generation from large offshore wind farms is being gradually accepted as a feasible solution to meet the rapid increase in energy demands. However, although the technology is progressing fast, a major drawback ... -
Control of steam bottoming cycles using nonlinear input and output transformations for feedforward disturbance rejection
(Peer reviewed; Journal article, 2022) -
Control of Three-Phase Solid-State Transformer with Phase-Separated Configuration for Minimized Energy Storage Capacitors
(Journal article; Peer reviewed, 2019)This paper presents the control structure of a solidstate transformer for three-phase AC/AC, to reduce the required size of capacitors. The structure consists of an AC/DC converter based on cascaded H-bridge converters, ... -
Control Strategies for Variable Speed Operation of Pumped Storage Plants with Full-size Converter Fed Synchronous Machines
(Chapter; Peer reviewed, 2021)The full-size converter fed synchronous machine (CFSM) for variable speed operation of a pumped storage power plant exhibits multiple advantages over the state-of-the-art Doubly Fed Induction Machine (DFIM) technology. The ... -
Control system for start-up and shut-down of a floating vertical axis wind turbine
(Peer reviewed; Journal article, 2013)A baseline control system for the Deepwind floating vertical axis wind turbine (VAWT) concept is analysed with em- phasis on start-up and shut-down schemes. The turbine concept includes a rotating spar with a 2-bladed rotor ... -
Convergence properties of detonation simulations
(Journal article; Peer reviewed, 2019) -
Convex Optimization-based Control Design for Parallel Grid-Connected Inverters
(Journal article; Peer reviewed, 2018)This paper presents a novel frequency-domain approach towards the control design for parallel grid-connected voltage source inverters (VSIs) with LCL output filters. The proposed method allows to design the controllers of ... -
Convex Relaxations of the Short-Term Hydrothermal Scheduling Problem
(Peer reviewed; Journal article, 2020)This paper concerns the assessment of two methods for convex relaxation of the short-term hydrothermal scheduling problem. The problem is originally formulated as a mixed integer programming problem, and then approximated ... -
Cooling aerosols and changes in albedo counteract warming from CO2 and black carbon from forest bioenergy in Norway
(Journal article; Peer reviewed, 2018) -
Coordinated Control between Wind and Hydro Power Systems through HVDC Links
(Peer reviewed; Journal article, 2012)The main objective of this paper is to show how the control systems on wind farm turbines, HVDC cables and power generating units can be coordinated to improve power system balance in the event of a wind farm shut down due ... -
Coordinated optimization of weekly reserve, day-ahead and balancing energy trade in hydropower
(Journal article; Peer reviewed, 2017) -
Coordinated Voltage Support with Reactive Power from High-power Charging Stations for EVs
(Chapter; Peer reviewed, 2021)High-power charging stations have recently drawn the attention of many researchers and electric vehicle (EV) infrastructure industries. However, the installation of fast chargers at various corridors of highways and cities ... -
Correlation effects between turbulence and the conversion rate of pulverized char particles
(Journal article; Peer reviewed, 2017)The effect of turbulence on heterogeneous reactions on the surface of char particles embedded in a turbulent oxidizer, consisting of oxygen and carbon-dioxide, is in this work studied numerically. It is shown that for a ... -
Corrosion performance of different alloys exposed to HTL conditions – a screening study
(Peer reviewed; Journal article, 2024)The corrosion and material evaluation study in (a) water-based simulated black liquor and (b) water-based simulated black liquor at super-critical conditions was successful. The conclusion from the testing program was that ... -
Corrosion performance of different alloys exposed to HTL conditions – a screening study
(Peer reviewed; Journal article, 2024)The corrosion and material evaluation study in (a) water-based simulated black liquor and (b) water-based simulated black liquor at super-critical conditions was successful. The conclusion from the testing program was that ... -
Cost-Benefit Analysis of Battery Energy Storage in Electric Power Grids: Research and Practices
(Chapter; Peer reviewed, 2020)This paper provides an overview of methods for including Battery Energy Storage Systems (BESS) into electric power grid planning. The general approach to grid planning is the same with and without BESS, but when BESS is ...