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Optimal Multiobjective Control of Low-Voltage AC Microgrids: Power Flow Regulation and Compensation of Reactive Power and Unbalance
(Journal article; Peer reviewed, 2019)The presence of single-phase distributed generators unevenly injecting active power in three-phase microgrids may create undesired upstream current unbalance. Consequently, voltage asymmetry and even active power curtailment ... -
Optimal Online Configuration and Load-Sharing in a Redundant Electric Power System for an Offshore Vessel Using Mixed Integer Linear Programming
(Chapter, 2018)This paper proposes several schemes for optimal online configuration and load sharing for a shipboard power system of a typical offshore vessel, having a number of varying capacity gensets. Different methods are presented ... -
Optimal Operation and Control of a Thermal Energy Storage System: Classical Advanced Control versus Model Predictive Control
(Peer reviewed; Journal article, 2020)The objective of this work is to define the optimal operation and control for a thermal storage system with heat sources and a consumer, which exchange utilities using one hot water thermal energy storage tank. In this ... -
Optimal operation and control of heat to power cycles: A new perspective from a systematic plantwide control approach
(Peer reviewed; Journal article, 2020)In this work, we use a plantwide control framework to systematically identify the control objectives, operational and environmental constraints, and degrees of freedom for a heat to power cycle with a drum, one pressure ... -
Optimal Operation and Control of Heat-to-Power Cycles: a New Perspective using a Systematic Plantwide Control Approach
(Journal article; Peer reviewed, 2019)We use a systematic plantwide control framework to analyze optimal operation of a simple heatto- power steam cycle with a single pressure level and a drum. The present control solutions for power plants1 have been developed ... -
Optimal Operation Mode Selection for Energy-efficient Light-weight Multi-hop Time Synchronization in Linear Wireless Sensor Networks
(Peer reviewed; Journal article, 2020)We explored the joint effect of synchronization window and offset/drift mode selection on the time synchronization of linear wireless sensor networks (LWSNs). Recent advances in the field along with the availability of ... -
Optimal operation of a subsea separation system including a coalescence based gravity separator model and a produced water treatment section
(Journal article; Peer reviewed, 2019)In this work, we develop a model for a gravity separator, and we use it together with models from the literature to study the control of a subsea separation system that separates oil, gas, and water from well fluids in ... -
Optimal Operation of Battery Storage for a Subscribed Capacity-Based Power Tariff Prosumer—A Norwegian Case Study
(Journal article; Peer reviewed, 2019)The cost of peak power for end-users subject to a demand charge may be substantial, expecting to increase further with the vast growth of power-demanding devices. In cases where load-shifting is not a viable option for ... -
Optimal Operation of Hydro-Dominated Power Systems with Environmental Constraints
(Chapter, 2022)This paper studies the operation of a small renewable and hydro-dominated power system when introducing environmental constraints. The risk of rationing and the local price formation is investigated using a stochastic, ... -
Optimal Operation with Changing Active Constraint Regions using Classical Advanced Control
(Journal article; Peer reviewed, 2018)With ”classical advanced control” we mean the control structures that are commonly used in industry for multivariable control. These have been in use for at least 50 years, but surprisingly there is little literature ... -
Optimal partitioning of smart distribution systems into supply-sufficient microgrids
(Journal article; Peer reviewed, 2018)This paper presents a systematic procedure for partitioning smart distribution systems into supply-sufficient microgrids. Firstly, renewable distributed generations (DGs) are optimally allocated in the distribution system. ... -
Optimal Path of a UAV Engaged in Wind-influenced Circular Towing
(Chapter; Peer reviewed, 2017)This paper considers the dynamic optimization of the planned path for an Unmanned Aerial Vehicle (UAV) engaged in circular towing of a cable-body system, such that the motion of the towed endmass is stabilized with minimum ... -
Optimal PI and PID control of first-order plus delay processes and evaluation of the original and improved SIMC rules
(Journal article; Peer reviewed, 2018)The first-order plus delay process model with parameters k (gain), τ (time constant) and θ (delay) is the most used representation of process dynamics. This paper has three objectives. First, we derive optimal PI- and ... -
Optimal planning of an urban ferry service operated with zero emission technology
(Peer reviewed; Journal article, 2023)While passenger-only ferries can be an effective instrument in mitigating road congestion in urban areas, they are among the most polluting modes of transportation. This paper studies technical and economic feasibilities ... -
Optimal Positioning of Snake Robots in Vortex Wakes using Extremum-Seeking Control.
(Peer reviewed; Journal article, 2023)In this paper we explore the optimal positioning of an underwater snake robot (USR) for energy harvesting in the wake of a bluff body. The USR and fluid are simulated jointly using a coupled vortex particle-mesh method and ... -
Optimal Power Flow Analysis in Power Dispatch for Distribution Networks
(Journal article; Peer reviewed, 2018)This paper presents two applications of Optimal Power Flow analysis for active and reactive power redispatch in medium-voltage distribution networks and shows how this tool can be used to efficiently manage the selection ... -
Optimal power flow based coordinated reactive and active power control to mitigate voltage violations in smart inverter enriched distribution network
(Journal article; Peer reviewed, 2023) -
Optimal power flow-based reactive power control in smart distribution network using real-time cyber-physical co-simulation framework
(Peer reviewed; Journal article, 2023)Future distribution networks (DN) are subject to rapid load changes and high penetration of variable distributed energy resources (DER). Due to this, the DN operators face several operational challenges, especially voltage ... -
Optimal preventive policies for parallel systems using Markov decision process: application to an offshore power plant
(Journal article; Peer reviewed, 2023)This work proposes a Markov Decision Process (MDP) model for identifying windows of opportunities to perform preventive maintenance for multi-unit parallel systems subject to a varying demand. The main contribution lies ... -
Optimal price-based scheduling of a pumped-storage hydropower plant considering environmental constraints
(Journal article; Peer reviewed, 2023)The paper proposes a novel medium-term scheduling model for a hydropower system composed by a pumped storage hydropower plant connected to a traditional hydropower plant subject to three types of environmental constraints; ...