Browsing NTNU Open by Author "Tedeschi, Elisabetta"
Now showing items 21-40 of 132
-
Control and Stability of Isolated Grids with Synchronous and Non-Synchronous Generation
Mota, Daniel dos Santos (Doctoral theses at NTNU;2023:450, Doctoral thesis, 2023)This thesis explores the challenges and opportunities associated with integrating offshore wind turbines into a geographically compact power-intensive isolated electric grid that is currently supplied by gas-powered ... -
Control Models for Providing Virtual Inertia to the Electrical Grid of the Offshore Platforms With Large Contribution of Offshore Wind
Heidari, Mohammad (Master thesis, 2021)Norway as one of the leading countries in the oil and gas and (floating) offshore wind energy sectors, plans to reduce its carbon emission according to the European commission strategy to become carbon-neutral by 2050. One ... -
Control of HVDC systems based on diode rectifier for offshore wind farm applications
ida, Flåten; Bergna-Diaz, Gilbert; Sanchez Acevedo, Santiago; Tedeschi, Elisabetta (Journal article; Peer reviewed, 2017)The transfer of energy from offshore wind farms using HVDC technology is highly dependant on the converter technology used. The conversion through HVDC has conventionally been done by Line Commutated Converters (LCC) or ... -
Control of wireless power transfer systems for marine applications
Paulsen, Lars Jakob (Master thesis, 2016)This report is a master thesis whose purpose is to show the steps in designing a control system used for regulating a system for inductive power transfer (IPT) of marine vessel and offshore applications. The constant ... -
Control Optimization of the Offshore HVDC Grid based on Modular Multilevel Converter for Improving DC Voltage Stability
Elahidoost, Atousa; Tedeschi, Elisabetta (Peer reviewed; Journal article, 2020)The aim of this paper is to reduce the voltage oscillation of the HVDC cable in an offshore point-to-point configuration based on the modular multilevel converter. An optimization methodology based on semidefinite programming ... -
Coordinated Control of a Dual Grid Forming Unit Connecting an Offshore Wind Farm and an E-STATCOM for Damping and Inertia Provision
Rabanal Alcubilla, Arkaitz; D'Arco, Salvatore; Tedeschi, Elisabetta (Chapter, 2024)Future weak power grids pose significant challenges for the operation of grids interconnecting power converters. Recently developed dual grid-forming strategies for modular multilevel converters allow simultaneous ac grid ... -
Coordinated Control of Parallel Power Conditioners Synthesizing Resistive Loads in Single-Phase AC Microgrids
Alonso, Augusto Matheus Dos Santos; Brandao, Danilo Iglesias; Marafao, Fernando Pinhabel; Tedeschi, Elisabetta (Chapter, 2019)Without proper coordination, power conditioners within microgrids are prone to suffer from resonance phenomena due to the complex and dynamic interactions among the main grid, nonlinear loads and distributed converters. ... -
Coordination of Frequency Reserves in an Isolated Industrial Grid Equipped With Energy Storage and Dominated by Constant Power Loads
Mota, Daniel dos Santos; Alves, Erick Fernando; D'Arco, Salvatore; Sanchez Acevedo, Santiago; Tedeschi, Elisabetta (Peer reviewed; Journal article, 2023)This paper examines the use of interconnected synchronous system requirements for frequency containment reserves (FCR) on isolated industrial grids that use turbogenerators as main source of energy, have high penetration ... -
Coordination of Modular Multilevel Converter Based HVDC Terminals for Ancillary Services
Taffese, Abel Assegid; Tedeschi, Elisabetta (Chapter, 2018)This paper deals with the utilization of the energy storage capacity, inherently present in the Modular Multilevel Converter (MMC), in providing ancillary services to ac grids. The service considered in this paper is Power ... -
Cross-border transmission line between Nepal and India: a test-case for the analysis of HVDC integration into an existing HVAC system
Shrestha, Praveen (Master thesis, 2016)Nepal has huge hydropower potential of 83,000 MW, of which 42,000 MW is technically and economically feasible. According to the annual report of Nepal Electricity Authority, the total installed capacity of hydropower in ... -
Current-Based Coordination of Distributed Energy Resources in a Grid-Connected Low-Voltage Microgrid: An Experimental Validation of Adverse Operational Scenarios
Dos Santos Alonso, Augusto Matheus; Arenas, Luis De Oro; Brandao, Danilo I.; Tedeschi, Elisabetta; Machado, Ricardo Q.; Marafão, Fernando P. (Peer reviewed; Journal article, 2022)Low-voltage grid-connected microgrids rely on the exploitation of inverter-interfaced distributed energy resources (DERs) in order to feed loads and to achieve bidirectional power flow controllability at their point of ... -
Data-driven energy management of isolated power systems under rapidly varying operating conditions
Chapaloglou, Spyridon; Varagnolo, Damiano; Marra, Francesco; Tedeschi, Elisabetta (Peer reviewed; Journal article, 2022)We propose an energy management algorithm for isolated industrial power systems that integrate uncertain renewable generation and energy storage. The proposed strategy is designed to ensure sustainable and cost-effective ... -
Data-driven sizing and control of energy storage for wind-powered offshore platforms – Energy Management and Control of Offshore Platforms Integrating Renewable Energy
Chapaloglou, Spyridon (Doctoral theses at NTNU;2023:86, Doctoral thesis, 2023)One of the key aspects of facing the global environmental crisis and achieving sustainable development for future societies is re-thinking the way energy is produced and managed to serve the demand. This perspective calls ... -
Data-informed scenario generation for statistically stable energy storage sizing in isolated power systems
Chapaloglou, Spyridon; Varagnolo, Damiano; Marra, Francesco; Tedeschi, Elisabetta (Peer reviewed; Journal article, 2022)We consider the problem of how to generate uncertainty scenarios to be used in energy storage sizing problems in isolated power systems. More precisely, we consider storage sizing formulations where both loads and generation ... -
DC/DC Converters for Multi-terminal HVDC system for Integrating Offshore Wind Farms
Kavungal Kolparambath, Shihabudheen (Master thesis, 2015)The development of far-offshore wind farms and other large-scale renewable energy sources, together with the increasing needs for long distance power transmission is resulting in more HVDC systems being integrated into the ... -
DC/DC Converters for Multi-terminal HVDC Systems - Based on Modular Multilevel Converter
Sari, Hasan Inanc (Master thesis, 2016)The increase in the energy demand has resulted in searching for new energy sources. Due to the increased prices of fossil fuels and the environmental issues, renewable energy sources has become popular in Europe. Renewable ... -
Design and Operation Principles of DC Circuit Breakers - Development of a Solid State DC Breaker for the NTNU/SINTEF Smart Grid and Renewable Energy Laboratory
Norum, Eivind Ødegaard (Master thesis, 2016)Exciting high voltage direct current (HVDC) transmission systems are mainly point-to-point connections. A multi-terminal HVDC grid consisting of three or more inter connected converter stations is suggested in order to ... -
Distributed Selective Harmonic Mitigation and Decoupled Unbalance Compensation by Coordinated Inverters in Three-Phase Four-Wire Low-Voltage Networks
Dos Santos Alonso, Augusto Matheus; Brandao, Danilo Iglesias; Tedeschi, Elisabetta; Marafao, Fernando Pinhabel (Peer reviewed; Journal article, 2020)Considering the high penetration of distributed generators in low-voltage grids, establishing a coordinated operation of their grid-tied inverters has become imperative to move towards the implementation of smart grids.Yet, ... -
Dual Sequence Controller with Delayed Signal Cancellation in the Rotating Reference Frame
Mota, Daniel; Alves, Erick Fernando; Tedeschi, Elisabetta (Chapter, 2021)Dual-sequence current controllers of voltage source converters (VSCs) feature two separate rotating reference frames (RRFs), commonly named dq frames, and rely on techniques that isolate the positive and negative sequences ... -
Dynamics and Stability of Meshed Multiterminal HVDC Networks
Sanchez Acevedo, Santiago; Bergna-Diaz, Gilbert; Tedeschi, Elisabetta; Garces Ruiz, Alejandro (Journal article; Peer reviewed, 2018)This paper investigates the existence of an equilibrium point in multiterminal HVDC grids, assesses its uniqueness and defines conditions to ensure its stability. An offshore multiterminal HVDC system including two wind ...