
Marco CupelliRolls-Royce Power Systems
Marco Cupelli
Dr.-Ing. Dipl.-Wirt.-Ing.
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56
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Introduction
Marco Cupelli currently works at the E.ON Energy Research Center, RWTH Aachen University. Marco does research in Control Systems Engineering, Electronic Engineering and Electrical Engineering. Their current project is 'DC-Direkt'.
Publications
Publications (56)
One can define an energy system as a system that converts one or more energy fluxes into other energy fluxes of a different kind. This definition may describe a relatively small system, for instance, a power plant, a chemical plant, or the heating and cooling apparatus of a single-family house, as well as one covering larger energy needs, for examp...
Interoperability is a key feature of digitalized energy systems. Significant high shares of volatile renewables require the wide use of system flexibilities from controllable generation and dedicated storage to load management. In an electricity system with separate roles for grid operation and energy retail, the activation of flexibilities can be...
In the course of the 2020 Horizon project InterFlex, French distribution system operator (DSO) ENEDIS is building Nice Smart Valley, a demonstrator to test innovative solutions for distribution systems. In their first use case, the network of the Lérins' islands is equipped with a variety of distributed energy resources (DERs) to investigate the co...
Power electronics based Medium-Voltage Direct Current (MVDC) Microgrids consist of several interconnected feedback-controlled switching converters. Such systems experience bus voltage stability challenges owing to the negative incremental resistance of Constant Power Loads (CPLs) and converter control loop interactions. To tackle the stability chal...
This paper presents a new control method for power electronic interfaced Distributed Energy Resources (DERs) in DC grids. The proposed control method relies on a data-driven identification approach that is used in an adaptive control framework and does not require accurate models of the converters or off-line training for control synthesis. In this...
Microgrids (MGs) are electricity-distribution systems containing loads and distributed energy resources (DERs) that can be operated in a controlled, coordinated way, either while connected to the main power network and/or while islanded. MGs have been around for decades in the energy system. They can be commonly found in critical infrastructure bui...
Tutorial about methods and tools for validating cyber-physical energy systems which was give at the 44th Annual Conference of the IEEE Industrial Electronics Society (IECON), Washington DC, USA, 2018.
This paper investigates the applicability of a Data-Driven Control (DDC) approach for power electronic converters in DC microgrids to stabilize the bus voltage under large perturbations from connection/disconnection of converters. In DC microgrids, loads and generators are interfaced through power electronic converters. When tightly regulated, thes...
In the European demonstration Project InterFLEX, five different demonstration sites are realized with a focus on flexibility services from energy generation and demand. The use of flexibility for grid and generation-supply balance management is a key factor in renewable-based electricity systems. However, the way such flexibility services are activ...
This paper presents measurement techniques for multipoint synchronized recordings in offshore wind farms (OWFs). Wind farms in the German North Sea are clustered and connected to the public grid via large-scale HVdc converters. One of the main risks for the OWF operators is the quality of the grid connection provided by the transmission system oper...
Power-electronics-based Medium-Voltage Direct Current (MVDC) shipboard power systems consist of several interconnected feedback-controlled switching converters. Such systems suffer from stability degradation owing to the negative incremental resistance of the Constant-Power Loads (CPLs). To tackle the stability problem, system-level stabilizing con...
Many modern commercial ships are electric ships, i.e., they utilize integrated electric propulsion (IEP ), where electric motors with variable speed drives are used for ship propulsion. This provides a number of advantages, such as reduced size and weight, electric power availability aboard the ship, reduced vibration, and more flexibility in gener...
The concept of an all-electric ship, while offering unprecedented advantages from the point of view of efficiency and flexibility of operation, has introduced new challenges in terms of stability and power flow control. The advent of a full power electronics power system has raised new questions from the point of view of system dynamics, particular...
This paper investigates the influence of control hbox{bandwidth} on the stability of loads, which are interfaced through power electronic converters and are fed from a dc power source. When tightly regulated, these loads exhibit a constant power load (CPL) behavior. It is shown here that the ideal CPL assumption, prevalent in literature, may not re...
Medium Voltage Direct Current (MVDC) distribution represents a promising technology in future distribution grid applications e.g. DC Microgrids, industrial high power distribution grids or future naval power systems. Especially the last topic has received a high volume of research attention. In the last years, universities as well as research cente...
This paper presents the Hardware in the Loop (HiL) validation of a control method to regulate the voltage of the DC Bus fed by Distributed Generation (DG) units in an islanded MVDC microgrid. The disturbance based control, employs a decentralized Linear Quadratic Gaussian (LQG) control of individual generator side converters to be executed locally,...
This paper focuses on modelling energy components within a Data Centre (DC) in a Smart City environment. This allows exploring the DC dynamics in a way that includes conditions that might be difficult or too risky to recreate in the real world, e.g. the impact of a large power injection from renewable energy sources and its influence on the DC oper...
This paper investigates the use of adaptive backstepping as a decentralized control strategy for voltage stability of DC microgrids where the loads and generators are interfaced through power electronic converters. The stabilizing control of the bus voltages resides in the generation side interfacing converters. The loads are tightly regulated and...
In future all-electric ships, which rely on a Medium Voltage DC distribution network, the power system stability can be jeopardized by the presence of constant power loads, due to their negative incremental resistance. In fact, this causes stability problems due to the negative impedance characteristic of tightly regulated converters. The Linearizi...
In future all-electrical ships with Medium Voltage DC distribution, the power system stability can be jeopardized by the presence of constant power loads, due to the negative impedance characteristic of their tightly regulated converters. In order to solve this problem we apply backstepping as a nonlinear control technique to the converter interfac...
Information Technology is a dominant player of our modern societies; Data Centres, lying at the heart of the IT landscape, have attracted attention, with their increasing energy consumption being a constant topic of concern, especially when it comes to the negative impact on the quality of their surrounding environment. Nevertheless, recent technol...
This paper investigates the use of synergetic control for voltage stability of a DC microgrid where the loads are interfaced through power electronic converters fed from a DC power source. When tightly regulated, these loads exhibit a constant power load (CPL) behavior. CPLs have negative incremental impedance behavior which may lead to system inst...
Bus voltage stability is a key issue in future medium-voltage DC (MVDC) power systems on ships. The presence of high-bandwidth controlled load converters (Constant Power Load, CPL) may induce voltage instabilities. A control design procedure is presented which starts at the modeling level and comes to control implementation. A control method based...
A major challenge in MVDC shipboard power systems is maintaining Medium Voltage DC (MVDC) system stability, due to the presence of the negative incremental resistance behavior of Constant Power Loads (CPLs). This paper presents a decentralized Linear Quadratic Gaussian (LQG) control approach for individual local generator side converter to regulate...
This paper discusses the performance of two different line voltage stability indices previously studied in literature the Line stability Index (Lmn) and Voltage Collapse Point Indicators (VCPI). The objective is to identify which index is most suitable for being used in control applications. The results presented here will provide a first indicatio...
This paper discusses the performance of different line voltage stability indices previously studied in literature including Line stability Index (Lmn), Fast Voltage Stability Index (FVSI), Voltage Collapse Point Indicators (VCPI), and Line Stability Index (LQP). The long term objective is to identify which index is most suitable for being used in c...
Voltage stability in Medium-Voltage DC (MVDC) power systems on ships is a key design goal. MVDC bus voltage stability can be impaired due to the presence of high-bandwidth controlled Constant Power Load (CPL) converters, which can induce negative incremental resistance instabilities. A linearization via state-feedback control is presented in this p...
This paper discusses the possible overestimation of possible stability problems in power systems with actively controlled loads which show constant power behavior. This overestimation is caused due to the simplified modeling of constant power loads for solving problems in an analytical way.
The integration of modern information and communication technologies with the energy infrastructure as incarnated by the Smart Grid vision raises new threats in term of information and identity theft, privacy breaches and failure to ensure data privacy compliance. In this paper, we discuss the need to for strong user-centric privacy protection in a...
Efficient use and distribution in future energy infrastructures largely depend on distributed control, metering and accounting functionalities. In such a Smart Grid essential components are distributed over the complete infrastructure, in particular parts of the infrastructure will be placed under possibly hostile end-user's control. Thus, the depe...