Operation of Power Electronics Converters under Adverse Grid Voltage Conditions

Organizers:          SametBiricik, European University of Lefke, Turkey

                            Hafiz Ahmed, Birmingham City University, United Kingdom

                           Hasan Komurcugil, Eastern Mediterranean University, Turkey

                           Mohamed Benbouzid, University of Brest, France, Shanghai,Maritime University, China

Abstract: Frequency estimation and harmoniccomponent detection methods are indispensablefor the operation of grid-connected custom powerdevices such as inverters, rectifiers, active powerfilters, dynamic voltagerestorers, UPSs, electricaldrives, etc. In order to meet the demand of everchanging scenario of the customer deviceslandscape, innovative techniques are requiredthat can cope with the presence of variousdistortions in the grid. This will enable a smoothtransition towards more renewable power grid.Owing to the huge importance of frequencyestimation and harmonic component detectiontechniques in the control of custom powerdevices, this special session will consider recentdevelopments in frequency estimation andharmonic current detection techniques and theirapplications in the power electronics.

Topics of the Session are: harmonic detection methods, frequency estimation under adverse gridvoltage conditions, phase-locked loop (PLL), frequency-locked loop (FLL), real and complex filtering for frequencyestimation, operation of active power filters under adverse grid conditions, voltage harmonic filtering by using dynamic voltage restorers, multifunctional grid connected PV supplied Inverters,control of ultrafast grid-connected rectifier, neural network and machine learning techniques for frequency estimation, linear and nonlinear observers for frequency estimation.



Charging Networks for Electric Transport

Organizers:           Pietro Tricoli, University of Birmingham, UK

                             Liana Cipcigan, Cardiff University, UK

Abstract: It is expected that a substantial proportion of vehicles will be electrified over the next few years and there will be an increased degree of integration between transport modes, e.g. electric trains supplied by the fixed electrical infrastructure and charging systems for electric cars. The main challenge is the substantial modification of existing concepts and engineering practices to design new charging networks achieving the goal of decarbonising the transport sector. The challenge of future charging networks could be addressed with an integrated whole‑system approach covering the electricity supply system, the electrification infrastructure (including both wired and wireless charging), and associated vehicle technologies. Attractive opportunities are offered by the integration of low carbon generation in the charging infrastructure and the use of carbon-free fuels for propulsion. The former is underpinned by the current expansion of smart grids and research is oriented on the development of the enabling power electronics technologies, as off-the-shelf solutions do not currently exist. The latter is supported by the recent momentum of hydrogen trains and associated fuel cells technologies and hydrogen generation infrastructure. Energy storage is a key component for both areas of research, although it is still not clear how to exploit their full potential and achieve the maximum benefits for the charging infrastructure while reducing the impact on the grid. Energy management systems overseeing the operation of charging networks will have to respond in a quick and flexible way to the needs of electric vehicles, grids, or both.

The main objective of this special session is to promote a discussion between researchers on the emerging challenges and opportunities for charging networks to enhance the integration between electric vehicles (car and trains), power grids, and hydrogen generation and improve efficiency and performance at global level.A non-exhaustive list of the possible keywords is reported below: charging systems, energy managementsystems, vehicle-to-everything (V2X), energy storage for transport, fuel cells for traction.

Power Electronic Converters for DC Microgrids

Organizer:    Vitor Pires, Polytechnic Institute of Setúbal, Portugal
                        Andrii Chub, Tallinn University of Technology, Estonia
                        Armando Pires, Polytechnic Institute of Setúbal, Portugal


With the development of the distributed generation, DC microgrids are now being seen as a viable solution and expected to be an up-and-coming alternative to AC networks. Besides that, with the increment of storage systems, electronic loads, and the proliferation of electric vehicle fast chargers, it could become a critical technology of the future. Indeed, the DC microgrids present several advantages, such as higher energy efficiency, improved power quality, reduced losses, no need for synchronization, and simpler control. In this context, power electronic converters are an essential component of the system. They should be used as an interface to the renewable energy sources, storage systems, and loads, or as an interface between a DC microgrid and the distribution grid. This special session will bring together researchers from academia and industry and governmental sectors to share and exchange novel ideas, experiences and state-of-the-art technologies of power electronic converters for DC microgrids. 

Topics of interest include, but are not limited to: Novel high step-up DC-DC power converter topologies; Novel DC-AC power converter topologies as an interface between DC and AC grids; Converter for connection and power flow control between DC microgrids; Advanced control and deployment methods in DC-DC and DC-AC power converters; Modeling, simulation, and control of emerging power converters; Applications of power converters in renewable energy for DC grid integration; Applications of power converters in energy storage systems for DC grid integration; Applications of power converters for load interfacing in DC grid integration; Voltage balancers for bipolar DC microgrids; Reliability and lifetime prediction of power electronic interface; Fault diagnosis of power electronic interface; Fault tolerance in power electronic interface.

Energy Communities

Organizer:      Marco Merlo, Politecnico di Milano, Italy
                       Lucian Toma, University Politehnica of Bucharest, Romania
                       Matteo Moncecchi, Politecnico di Milano, Italy

Abstract: With the Clean Energy Package, the European Union introduced the concept of Renewable Energy Communities: groups of citizens, small and medium enterprises and local authorities that decide to join forces to equip themselves with systems to produce and share energy from renewable energy sources. Energy communities (EC) are willing to bring closer Europeans to renewable energy projects and to make them actively participate to the clean energy transition. When considering the planning of an energy community, two directions can be defined: from one side, a holistic view is required, modelling energy community as complex multi-energy system, from the other side, the focus is on the practical implementation of real-life REC projects, where the need is to formalize standard and reusable models.The proposed Special Session is devoted to detail the evolution of the Regulatory Framework in different countries, to detail, from the theoretical side, how such a multy-energy systems could be optimally designed and controlled and, last but not least, a particular focus will be for real life study cases, in order to share bounds and criticalities correlated with the deployment of an Energy Community.Topics include but are not limited to: Energy Communities Regulatory Framework, Energy Communities Legal Framework, Energy Communities Design, Energy Resources modelling in Energy Communities, Energy Storage Technologies for Energy Communities, Business Models for Energy Communities, Energy Communities Impact over the Distribution Grids.

Isolated Power Converters

Organizer:      Mattia Ricco, University of Bologna, Italy
                       Riccardo Mandrioli, University of Bologna, Italy
                       Vitor Monteiro, University of Minho, Portugal

                       Thiago Batista Soeiro, Delft University, The Netherlands

Abstract:Researchers and scholars increased their commitment towards areas like electric vehicle charging, wireless power transfer, and solid-state transformers during the last years. For the success and industrial adoption of these areas, it is important to take into account requirements like high power-density, high conversion efficiency, and galvanic isolation. Isolated topologies like resonant converter and dual/multi-active-bridge started to be developed and improved, fulfilling varied industrial requirements. Moreover, wide bandgap SiC/GaN-based solutions enable high-speed switching operations, opening to more efficient power conversion and cost, size, and weight reductions. Additionally, to new topologies with emergent technologies of power electronics components, innovative control algorithms are also emerging targeting to increase the system efficiency.In this regard, this Special Session covers innovative contributions concerning isolated power converters like, but not limited to, resonant converters and dual-active-bridge based solutions having novel control strategies, modulation techniques, symmetric/asymmetric disposition, power switches utilization, decoupled power-flow, and so forth.

Topics of interest for publication include, but are not limited to: Dual-active-bridge power converters; Resonant converters; Multi-active-bridge power converters; Symmetrical/asymmetrical reconfigurable dual-active-bridge solutions; Soft-switching techniques in isolated converters; Isolated power converter design and cost optimization; Modulation and control strategies for efficient power conversion; Control algorithms (e.g, single phase shift, dual phase shift, triple phase shift and extended phase shift); Advanced isolated power converters (e.g., multi-input multi-output); Power converters and compensation circuits for wireless power transfer; Reliability and redundancy in isolated power converters;  Modular isolated power converters for solid-state transformers.

GIS-based approaches for planning and operation of distribution networks

Organizer:      Alessandro Bosisio, Politecnico di Milano, Italy
                       Silvia Corigliano, Politecnico di Milano, Italy
                       Xu Andy Sun, Georgia Institute of Technology, USA

Abstract: Geographic Information Systems (GIS) have been gaining importance over the last years thanks to the advancements in different fields such as ICT technologies, remote sensing, artificial intelligence and cloud computing. Those technologies allow the effective collection and management of wide geographical databases. Electric power sector is one of the several industries positively impacted by advancements in GIS technologies due to its intrinsic geographically distributed nature. GIS platforms are becoming widely used by distribution utilities in different business areas. On field operation is becoming smarter and faster thanks to the use of GIS-based mobile apps, with geo-referenced grid components. Operators optimal routing and real-time monitoring of networks assets increase the efficiency and reduce costs of maintenance. Satellite based data could help the emergency management activities, such as hurricane response, lighting strikes forecasting or tree falling risk prevention. Finally, engineering and planning activities could benefit from GIS data for optimal routing of new electric lines, estimation of loads and energy resources and design of new systems and components. The role of research is to foster the positive integration of GIS in power sector and to promote new possible synergies.The aim of this special session is to feature the state-of-the-art and future developments of geographic information technologies for planning and operation of distribution networks. New modeling techniques and formulations, as well as innovative case studies which transform geographic information data to power supply knowledge are welcomed. Both theoretical and application-oriented papers are encouraged from academic researchers and industrial practitioners.

Topics include, but are not limited to: Geographic data-driven planning and operation of distribution systems;  GIS-based resilience and reliability assessment in distribution networks; GIS-based availability and suitability analyses for renewable energy site location in distribution networks; Technical potential analysis of renewable and energy storage technologies with GIS; Mapping and visualization of electricity demand and load forecasting with GIS; Satellite remote sensing image-driven assessment for distribution networks infrastructure; Machine learning and data mining for geospatial data analysis in distribution networks; Spatial integration of multi-energy systems towards energy transition and decarbonization of the power system.


Technological and algorithmic innovations for electric vehicles smartcharging

Organizer:      Antonello Monti, RWTH Aachen University/Fraunhofer FIT, Germany
                       Filippo Bovera, Politecnico di Milano,Italy

Abstract: The diffusion of private transport solutions based on electricity hasbeen pushed by Covid-19 crisis during 2020. In the first threequarters of 2020, the volume of electrically chargeable vehicles(BEV and PHEV) increased by 102% considering EU, EFTA and UKmarkets. This occurred in a context where the sales of ICE – basedcars decreased dramatically, and governments decided to intervenewith generous incentives dedicated to plug-in hybrid and batteryvehicles. This tendency is expected to increase in next years, dueto both a higher demand in private transport for sanitary reasonsand a greater awareness concerning environmental and pollutionissues, especially in urban areas. The combination of a deeperpenetration of electric charging for private transport and a largediffusion of intermittent renewable generators can become an issuefor electricity distribution networks, but can represent also formanufacturer and researchers an occasion to develop andimplement advanced and innovative solutions for powermanagement and energy integration. In this sense, the specialissue aims at collecting contributes and developing a discussionaround possible solutions for the smart integrations of electricmobility, renewable production, demand response and energyefficiency practices.

Topics considered entail, but are not limited to:new algorithmic approaches for smart charging; coupling of electric vehicles with intermittent renewables; smart charging and demand response synergies; solutions for reducing the impact of electric vehicles on publicnetworks management; market integration and aggregation of electric charging points; estimation of the impact of electric vehicles charging onelectricity tariffs; multi-vector district energy solutions exploiting smart chargingfor energy efficient practices; use of ICT for better charging performances; new functions for interoperability between electric chargingand services provision to vehicle users; smart EV charging and local (distribution network) flexibilitymarkets; innovative regulatory frameworks for smart charging solutions.