Dr Savvas Papadopoulos' Outputs (17)

Actual Design Space Methodology for Preliminary Design Analysis of Switched Reluctance Machines (2020)
Journal Article
Rocca, R., Giulii Capponi, F., De Donato, G., Papadopoulos, S., Caricchi, F., Rashed, M., & Galea, M. (2021). Actual Design Space Methodology for Preliminary Design Analysis of Switched Reluctance Machines. IEEE Transactions on Industry Applications, 57(1), 397-408. https://doi.org/10.1109/tia.2020.3038352

In the design of modern, high-performance switched reluctance machines, the highly restrictive sets of constraints and requirements severely limit the number of feasible solutions. In order to improve the chances of attaining a successful design, thi... Read More about Actual Design Space Methodology for Preliminary Design Analysis of Switched Reluctance Machines.

Design Trade-Offs and Feasibility Assessment of a Novel One-Body, Laminated-Rotor Flywheel Switched Reluctance Machine (2020)
Journal Article
Rocca, R., Papadopoulos, S., Rashed, M., Prassinos, G., Giulii Capponi, F., & Galea, M. (2020). Design Trade-Offs and Feasibility Assessment of a Novel One-Body, Laminated-Rotor Flywheel Switched Reluctance Machine. Energies, 13(22), Article 5857. https://doi.org/10.3390/en13225857

In a bid to respond to the challenges being faced in the installation of flywheel-based electric energy storage systems (EESSs) in customer-side facilities, namely high safety, high energy/power densities and low cost, research work towards the devel... Read More about Design Trade-Offs and Feasibility Assessment of a Novel One-Body, Laminated-Rotor Flywheel Switched Reluctance Machine.

Considerations on the Development of an Electric Drive for a Secondary Flight Control Electromechanical Actuator (2019)
Journal Article
Giangrande, P., Galassini, A., Papadopoulos, S., Al-Timimy, A., Lo Calzo, G., Degano, M., Gerada, C., & Galea, M. (2019). Considerations on the Development of an Electric Drive for a Secondary Flight Control Electromechanical Actuator. IEEE Transactions on Industry Applications, https://doi.org/10.1109/tia.2019.2907231

The more electric aircraft concept aims to improve the fuel consumption, the weight and both the maintenance and operating costs of the aircraft, by promoting the use of electric power in actuation systems. According to this scenario, electromechanic... Read More about Considerations on the Development of an Electric Drive for a Secondary Flight Control Electromechanical Actuator.

Optimal Advance Angle for Aided Maximum-Speed-Node Design of Switched Reluctance Machines (2019)
Journal Article
Rocca, R., Giulii Capponi, F., Papadopoulos, S., De Donato, G., Rashed, M., & Galea, M. (2020). Optimal Advance Angle for Aided Maximum-Speed-Node Design of Switched Reluctance Machines. IEEE Transactions on Energy Conversion, 35(2), 775-785. https://doi.org/10.1109/tec.2019.2959823

In the design processes of Switched Reluctance Machines that operate in wide constant power speed ranges, the maximum power available at maximum speed must be evaluated for every machine candidate. This is critical to ensure compliance with the power... Read More about Optimal Advance Angle for Aided Maximum-Speed-Node Design of Switched Reluctance Machines.

Feasibility Study of Integrating Renewable Energy Generation System in Sark Island to Reduce Energy Generation Cost and CO2 Emissions (2019)
Journal Article
Robinson, S., Papadopoulos, S., Jadraque Gago, E., & Muneer, T. (2019). Feasibility Study of Integrating Renewable Energy Generation System in Sark Island to Reduce Energy Generation Cost and CO2 Emissions. Energies, 12(24), 4722. https://doi.org/10.3390/en12244722

The island of Sark, located in the English Channel, has endured an electricity distribution crisis for the past few years, resulting in high electricity costs almost six times higher than UK mainland energy prices. This article is focused on a method... Read More about Feasibility Study of Integrating Renewable Energy Generation System in Sark Island to Reduce Energy Generation Cost and CO2 Emissions.

Experimental validation of a hybrid converter with enhanced switching ripple cancellation (2016)
Journal Article
Papadopoulos, S., Klumpner, C., Rashed, M., & Wheeler, P. (2016). Experimental validation of a hybrid converter with enhanced switching ripple cancellation. IET Power Electronics, 9(12), 2360-2368. https://doi.org/10.1049/iet-pel.2015.0984

This study presents the experimental evaluation of a proposed new three phase hybrid converter topology for medium voltage applications. The topology is based on the interconnection of a low switching frequency voltage source inverter (VSI), rated at... Read More about Experimental validation of a hybrid converter with enhanced switching ripple cancellation.

Investigations in the Modeling and Control of a Medium-Voltage Hybrid Inverter System That Uses a Low-Voltage/Low-Power Rated Auxiliary Current Source Inverter (2016)
Journal Article
Papadopoulos, S., Rashed, M., Klumpner, C., & Wheeler, P. (2016). Investigations in the Modeling and Control of a Medium-Voltage Hybrid Inverter System That Uses a Low-Voltage/Low-Power Rated Auxiliary Current Source Inverter. IEEE Journal of Emerging and Selected Topics in Power Electronics, 4(1), 126-140. https://doi.org/10.1109/jestpe.2015.2488631

Hybrid converters consist of a main inverter processing the bulk of the power with poor waveform performance and a fast and versatile auxiliary inverter to correct the distortion. In this paper, the main converter is a medium-voltage (MV) neutral poi... Read More about Investigations in the Modeling and Control of a Medium-Voltage Hybrid Inverter System That Uses a Low-Voltage/Low-Power Rated Auxiliary Current Source Inverter.

A One-Body, Laminated-Rotor Flywheel Switched Reluctance Machine for Energy Storage: Design Trade-Offs
Presentation / Conference Contribution
Rocca, R., Papadopoulos, S., Rashed, M., Prassinos, G., Capponi, F. G., & Galea, M. (2020, June). A One-Body, Laminated-Rotor Flywheel Switched Reluctance Machine for Energy Storage: Design Trade-Offs. Presented at 2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe), Madrid, Spain

A critical aspect of distributed generation systems focuses on the installation of Electrical Energy Storage Systems in customer-side facilities. In this scenario, flywheel technology is challenged to provide high levels of safety, compactness and co... Read More about A One-Body, Laminated-Rotor Flywheel Switched Reluctance Machine for Energy Storage: Design Trade-Offs.

SMART: Modular Architecture for Reliable Transportation
Presentation / Conference Contribution
Papadopoulos, S., Galassini, A., Ruksnaitis, L., Farhat, N., Kiselychnyk, O., Midgley, W., & Degano, M. (2019, October). SMART: Modular Architecture for Reliable Transportation. Presented at IEEE IECON 2019 Conference, the 45th Annual Conference of the IEEE Industrial Electronics Society, Lisbon, Portugal

This paper proposes a new ultra-reliable architecture for fully electric propulsion primarily aimed at the automotive sector. The system considers a direct drive arrangement, minimizing the number of moving components and is based on a network of mul... Read More about SMART: Modular Architecture for Reliable Transportation.

Comparison of multilevel PWM versus interleaved based sinewave shaping for two-stage current source inverters used in PV applications
Presentation / Conference Contribution
Papadopoulos, S., & Klumpner, C. (2013, September). Comparison of multilevel PWM versus interleaved based sinewave shaping for two-stage current source inverters used in PV applications. Presented at 2013 15th European Conference on Power Electronics and Applications (EPE), Lille, France

This paper investigates the advantages of using interleaved based direct sinusoidal current shaping techniques as alternative to 5-level Pulse Width Modulation (PWM) when used in conjunction to a two stage Current Source Inverter (CSI) in PV applicat... Read More about Comparison of multilevel PWM versus interleaved based sinewave shaping for two-stage current source inverters used in PV applications.

A Hybrid Inverter Solution for Medium Voltage Applications using Series Capacitor and a CSI Active Power Filter (SC-APF)
Presentation / Conference Contribution
Papadopoulos, S., Klumpner, C., Wheeler, P., & Rashed, M. (2014, April). A Hybrid Inverter Solution for Medium Voltage Applications using Series Capacitor and a CSI Active Power Filter (SC-APF). Presented at 7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014), Manchester, UK

This paper proposes a new hybrid inverter solution for medium/high voltage applications that consists of a slow switching inverter using high voltage or series connected switching devices, fitted with a low kVA rated auxiliary current source inverter... Read More about A Hybrid Inverter Solution for Medium Voltage Applications using Series Capacitor and a CSI Active Power Filter (SC-APF).

A hybrid converter for medium voltage using a low-voltage current source active filter connected via a series capacitor
Presentation / Conference Contribution
Papadopoulos, S., Rashed, M., Klumpner, C., & Wheeler, P. (2014, August). A hybrid converter for medium voltage using a low-voltage current source active filter connected via a series capacitor. Presented at 2014 16th European Conference on Power Electronics and Applications (EPE'14-ECCE Europe), Lappeenranta, Finland

This paper proposes a new three phase hybrid inverter topology suitable for medium to high voltage inverter applications. The topology shown in Fig. 1 consists of a 3-phase VSI rated at medium voltage acting as a main inverter bridge processing the b... Read More about A hybrid converter for medium voltage using a low-voltage current source active filter connected via a series capacitor.

Mitigating the effect of series capacitance unbalance on the voltage reduction capability of an auxiliary CSI used as switching ripple active filter
Presentation / Conference Contribution
Papadopoulos, S., Rashed, M., Klumpner, C., & Wheeler, P. (2016, September). Mitigating the effect of series capacitance unbalance on the voltage reduction capability of an auxiliary CSI used as switching ripple active filter. Presented at 2016 IEEE Energy Conversion Congress and Exposition (ECCE), Milwaukee, WI, USA

The use of series connected capacitors for high voltage applications has been proven to be beneficial for voltage stress reduction across power semiconductors. In a 3-phase grid any asymmetry in the value of the series capacitance may lead to signifi... Read More about Mitigating the effect of series capacitance unbalance on the voltage reduction capability of an auxiliary CSI used as switching ripple active filter.

Analytical Approach for the Identification of an Optimal Design Space for Switched Reluctance Machines
Presentation / Conference Contribution
Rocca, R., Capponi, F. G., De Donato, G., Rashed, M., Papadopoulos, S., & Galea, M. (2018, September). Analytical Approach for the Identification of an Optimal Design Space for Switched Reluctance Machines. Presented at 2018 XIII International Conference on Electrical Machines (ICEM), Alexandroupoli, Greece

This work presents a rigorous approach to simplify the design optimization process for Switched Reluctance Machines. First of all, the dimension of the Design Space is found to be equal to twelve, as the number of Independent Design Variables. Then,... Read More about Analytical Approach for the Identification of an Optimal Design Space for Switched Reluctance Machines.

Multi-Port Power Conversion Systems for the More Electric Aircraft
Presentation / Conference Contribution
Gu, C., Zhang, H., Buticchi, G., Sala, G., Galassini, A., Papadopoulos, S., & Degano, M. (2018, October). Multi-Port Power Conversion Systems for the More Electric Aircraft. Presented at IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, Washington, DC

In the framework of the More Electric Aircraft (MEA), weight reduction and energy efficiency constitute the key figures. In addition to these requirements, the safety and the continuity of operation is of critical importance. These sets of desired fe... Read More about Multi-Port Power Conversion Systems for the More Electric Aircraft.

Design of PMSM for EMA Employed in Secondary Flight Control Systems
Presentation / Conference Contribution
Giangrande, P., Al-Timimy, A., Galassini, A., Papadopoulos, S., Degano, M., & Galea, M. (2018, November). Design of PMSM for EMA Employed in Secondary Flight Control Systems. Presented at 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC), Nottingham

The more electric aircraft (MEA) initiative aims to improve weight, fuel consumption and maintenance costs of the aircraft, by increasing the use of electric power in actuation systems. Considering this scenario, electromechanical actuators (EMAs) fo... Read More about Design of PMSM for EMA Employed in Secondary Flight Control Systems.

A hybrid inverter system for medium voltage applications using a low voltage auxiliary CSI
Presentation / Conference Contribution
Papadopoulos, S., Rashed, M., Klumpner, C., & Wheeler, P. (2014, September). A hybrid inverter system for medium voltage applications using a low voltage auxiliary CSI. Presented at 2014 IEEE Energy Conversion Congress and Exposition (ECCE), Pittsburgh, PA, USA

Hybrid converters consist of a main inverter processing the bulk of the power with poor waveform performance and a fast and versatile auxiliary inverter to correct the distortion. In this paper, the main converter is a medium voltage NPC inverter and... Read More about A hybrid inverter system for medium voltage applications using a low voltage auxiliary CSI.