Browsing NTNU Open by Author "Suul, Jon Are Wold"
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A Modular Multilevel Interface for Transformerless Grid Integration
Guidi, Giuseppe; D'Arco, Salvatore; Suul, Jon Are Wold; Ryosuke, Iso; Itoh, Jun-Ichi (Chapter, 2019)This paper presents a system configuration for transformer-less grid integration of large-scale charging infrastructures for electric vehicles (EVs) with wireless inductive charging. The proposed configuration relies on a ... -
A Virtual synchronous machine implementation for distributed control of power transformers in SmartGrids
D'Arco, Salvatore; Suul, Jon Are Wold; Fosso, Olav B (Peer reviewed; Journal article, 2015)The ongoing evolution of the power system towards a “SmartGrid” implies a dominant role of powerelectronic converters, but poses strict requirements on their control strategies to preserve stability andcontrollability. In ... -
Analysis of MMC Dynamics in DQZ Coordinates for Vertical and Horizontal Energy Balancing Control
Bergna-Diaz, Gilbert; Freytes, Julian; Guillaud, Xavier; D'Arco, Salvatore; Suul, Jon Are Wold (Chapter, 2018)This paper presents a control system implementation in dqz-coordinates for equalizing the average energies stored in each arm of a Modular Multilevel Converter (MMC); a control objective that is typically referred to as ... -
Analysis of small-signal dynamics in a hybrid ship power system with a Virtual Synchronous Machine
Hofstad, Edvard Grimsmo (Master thesis, 2019)Et økende fokus på miljøpåvirkningen fra marine kraftsystemer som benytter seg av fossilt brensel har resultert i implementeringen av Utlippskontrollerte soner og et økende krav til nivåer av utslipp av forurensede gasser ... -
Analysis of small-signal dynamics in inductive power transfer systems
Kvakland, Jorunn (Master thesis, 2019)Dette er en masteroppgave om trådløs ladning av elbil, hvor den sentrale delen handler om hvordan kontrollere ladeprosessen. Denne oppgaven er et sluttprodukt av 5 år studie ved institutt for teknisk kybernetikk ved Norges ... -
Classification and analysis of impact on small-signal dynamics and stability from expansion of VSC-HVDC systems to multi-terminal HVDC grids
D'Arco, Salvatore; Beerten, Jef; Suul, Jon Are Wold (Chapter, 2017)This paper presents a structured approach for analysing the effect of HVDC transmission system expansion on the small signal dynamics. The methodology decomposes the expansion of the system into a sequence of steps and ... -
Comparative Analysis of Small-Signal Dynamics in Virtual Synchronous Machines and Frequency-Derivative-Based Inertia Emulation
Suul, Jon Are Wold; D'Arco, Salvatore (Chapter, 2018)This paper presents a comparison of small-signal dynamics for a current controlled Virtual Synchronous Machine (VSM), a voltage controlled VSM and a df/dt-based control strategy for inertia emulation. The comparison is ... -
Comparative Eigenvalue Analysis of Synchronous Machine Emulations and Synchronous Machines
Unamuno, Eneko; Suul, Jon Are Wold; Molinas Cabrera, Maria Marta; Barrena, Jon Andoni (Chapter, 2019)This paper presents a comparative eigenvalue analysis of the stability characteristics and small signal dynamics of four different control strategies for Synchronous Machine Emulation (SME) by power electronic converters, ... -
Coupling of AC Grids via VSC-HVDC Interconnections for Oscillation Damping based on Differential and Common Power Control
Rodriguez-Cabero, Alberto; Perez, Javier; Prodanovic, Milan; Suul, Jon Are Wold; D'Arco, Salvatore (Journal article; Peer reviewed, 2019)This paper presents a control approach for HVDC interconnections that provides damping of frequency oscillations in asynchronous ac grids by introducing a virtual friction for coupling their inertial dynamics. The HVDC ... -
Electrical Machines and Power Electronics for Starter-Generators in More Electric Aircrafts: A Technology Review
Nøland, Jonas Kristiansen; Leandro, Matteo; Suul, Jon Are Wold; Molinas Cabrera, Maria Marta; Nilssen, Robert (Chapter, 2019)Safety-critical power conversion systems play a major role in the paradigm shift towards more electric aircraft (MEA) architectures. This paper reviews the electrical machines and their power electronic systems that are ... -
Energy-Based State-Space Representation of Modular Multilevel Converters with a Constant Equilibrium Point in Steady-State Operation
Bergna-Diaz, Gilbert; Suul, Jon Are Wold; D'Arco, Salvatore (Journal article; Peer reviewed, 2017)The internal currents and voltages of Modular Multilevel Converters (MMCs) contain multiple frequency components in steady state operation and remain time-periodic even when transformed into a synchronously rotating reference ... -
Evaluation of constructability of dynamic charging systems for vehicles in Norway
Jakobsen, Pål Drevland; Suul, Jon Are Wold; Rise, Torun (Research report, 2018) -
Evaluation of Virtual Inertia Control Strategies for MMC-based HVDC Terminals by P-HiL Experiments
D'Arco, Salvatore; Nguyen, Tuan Thanh; Suul, Jon Are Wold (Chapter; Peer reviewed, 2019)This paper presents an experimental performance evaluation of different control strategies for providing virtual inertia from power electronic converters. The evaluation is based on a laboratory-scale prototype of a ... -
Evaluation of Virtual Synchronous Machines With Dynamic or Quasi-Stationary Machine Models
Mo, Olve; D'Arco, Salvatore; Suul, Jon Are Wold (Peer reviewed; Journal article, 2016)This paper presents a comparison of the small-signal stability properties for Virtual Synchronous Machines (VSMs) with dynamic and quasi-stationary representation of the internal Synchronous Machine (SM) model. It is shown ... -
Frequency-dependent cable modelling for small-signal stability analysis of VSC-HVDC systems
Beerten, Jef; D'Arco, Salvatore; Suul, Jon Are Wold (Journal article; Peer reviewed, 2016)State-of-the-art time-domain models of power cables account for the frequency dependency of physical parameters to enable accurate transient simulations of high-voltage transmission schemes. Owing to their formulation, ... -
Gate controlling MPCs as Part of a cascaded MPC Structure, used for harmonic Mitigation in a Ship Power System
Dahlen, Olav Hagen (Master thesis, 2018)This thesis studies the effect of controlling gate switches in an APF using FCS-MPC. This gave a cascaded MPC structure. Where internal states and a calculated reference from the first MPC is used by a second MPC. The ... -
Generalized Voltage-based State-Space Modelling of Modular Multilevel Converters with Constant Equilibrium in Steady-State
Bergna-Diaz, Gilbert; Freytes, Julian; Guillaud, Xavier; D'Arco, Salvatore; Suul, Jon Are Wold (Journal article; Peer reviewed, 2018)Abstract: This paper demonstrates that the sum and difference of the upper and lower arm voltages are suitable variables for deriving a generalized state-space model of an MMC which settles at a constant equilibrium in ... -
Harmonic-Domain SISO Equivalent Impedance Modeling and Stability Analysis of a Single-Phase Grid-Connected VSC
Zhang, Chen; Molinas Cabrera, Maria Marta; Føyen, Sjur; Suul, Jon Are Wold; Isobe, Takanori (Peer reviewed; Journal article, 2020)This article presents a harmonic-domain single-input single-output (SISO) equivalent modeling technique for the impedance modeling and stability analysis of a single-phase grid-connected voltage-source converter (VSC). The ... -
Identification and Small-Signal Analysis of Interaction Modes in VSC MTDC Systems
Beerten, Jef; D'Arco, Salvatore; Suul, Jon Are Wold (Journal article; Peer reviewed, 2016)In this paper, a methodology is presented to identify and analyze interaction modes between converters in voltage-source converter multiterminal high-voltage direct current (VSC MTDC) systems. The absence of a substantial ... -
Improving Small-Signal Stability of an MMC with CCSC by Control of the Internally Stored Energy
Freytes, Julian; Bergna Diaz, Gilbert; Suul, Jon Are Wold; D'Arco, Salvatore; Gruson, Francois; Colas, Frederic; Saad, Hani; Guillaud, Xavier (Journal article; Peer reviewed, 2017)The DC-side dynamics of Modular Multilevel Converters (MMCs) can be prone to poorly damped oscillations or stability problems when the second harmonic components of the arm currents are mitigated by a Circulating Current ...