Dr Stratis Batzelis PhD

White paper on solar intergation in the UK and India freely available here.

Lecturer with the School of Electronics and Computer Science at the University of Southampton.

Efstratios (Stratis) Batzelis is an “Engineering for Development” Research Fellow of the Royal Academy of Engineering (RAEng) and has been a Lecturer at ECS since Apr 2021. Prior to that post, Stratis was a Research Fellow at Imperial College London since Nov 2019 and before that he held an EU Marie-Curie individual fellowship on photovoltaic control & integration from Nov 2017. He obtained his PhD degree from the National Technical University of Athens (NTUA), Greece in 2016.

Stratis is an experienced researcher with many IEEE publications and a funding track record of more than £1.6 million. He is a Senior IEEE member, a Fellow of the Higher Education Academy (FHEA) and an Associate Editor in IEEE Transactions on Sustainable Energy. He is an advocate of sustainable energy and the fight against climate change. His research interests involve renewable energy technologies and distributed energy resources, mainly solar photovoltaics and inverter-based generation, power electronics control and power system stability.

Funding

EU Horizon 2020 Innovation Action: RE-EMPOWERED – Renewable Energy EMPOWERing European and InDian communities, Co-I, £446K, 2021-2024
RAEng research fellowship: SOL-DEV – Addressing the SOLar Integration Challenges in DEVeloping Countries, PI, £964K, 2019-2024
EU Marie-Curie individual fellowship: PVCI – PhotoVoltaic Control & Integration, Research Fellow, £157K, 2017-2019
IKY/Siemens postdoctoral fellowship: PV systems: Modern challenges, Research Fellow, £4K, 2016-2017

Research

Research interests

Solar photovoltaic (PV) systems design, modeling, control and integration to the power system
Renewable Energy Resources (RES)
Electrification and energy access in developing countries
Intergation of Distributed Energy Resources (DERs) to the power system
Control of power electronics and Inverter-based resources (IBRs)
Power system stability

Publications

2022

Batzelis, Stratis, Blanes, Jose, Toledo, F. Javier and Galiano, Vicente (2022) Noise-scaled euclidean distance: A metric for maximum likelihood estimation of the PV model parameters. IEEE Journal of Photovoltaics, 12 (3), 815 - 826. (doi:10.1109/JPHOTOV.2022.3159390).

2021

Pawar, Bandopant, Chakrabarti, Saikat, Batzelis, Efstratios I. and Pal, Bikash C. (2021) Grid-Forming Control for Solar PV Systems with Real-Time MPP Estimation. In 2021 IEEE Power and Energy Society General Meeting, PESGM 2021. vol. 2021-July, IEEE Computer Society.. (doi:10.1109/PESGM46819.2021.9638020).
Pawar, Bandopant, Batzelis, Efstratios, Chakrabarti, Saikat and Pal, Bikash (2021) Grid-forming control for solar PV systems with power reserves. IEEE Transactions on Sustainable Energy, 12 (4), 1947-1959. (doi:10.1109/TSTE.2021.3074066).
Luo, Xi, Barreras, Jorge Varela, Chambon, Clementine L., Wu, Billy and Batzelis, Efstratios (2021) Hybridizing lead–acid batteries with supercapacitors: a methodology. Energies, 14 (2), 1-27, [507]. (doi:10.3390/en14020507).
Karpana, Sivakrishna, Batzelis, Efstratios, Maiti, Suman and Chakraborty, Chandan (2021) PV-supercapacitor cascaded topology for primary frequency responses and dynamic inertia emulation. Energies, 14 (24), [8347]. (doi:10.3390/en14248347).
Kampitsis, Georgios, Batzelis, Efstratios, van Erp, Remco and Matioli, Elison (2021) Parallel pv configuration with magnetic-free switched capacitor module-level converters for partial shading conditions. Energies, 14 (2), [456]. (doi:10.3390/en14020456).
Batzelis, Stratis, Rather, Zakir Hussain, Barton, John, Naidu, Bonu Ramesh, Wu, Billy, Ul Nazir, Firdous, Nduka, Onyema Sunday, He, Wei, Nsengiyaremye, Jerome, Pawar, Bandopant and Palmer, Diane (2021) Solar integration in the UK and India: technical barriers and future directions 85pp. (doi:10.17028/rd.lboro.14453133.v1).
Petrone, Giovanni, Zamboni, Walter, Batzelis, Efstratios, Manganiello, Patrizio and Blasco-Gimenez, Ramon (2021) Special Issue ELECTRIMACS 2019 ENGINEERING Modelling and computational simulation for analysis and optimization in electrical power engineering. Mathematics and Computers in Simulation, 184, 1-4. (doi:10.1016/j.matcom.2020.08.003).
Vuyyuru, Umamaheswararao, Maiti, Suman, Chakraborty, Chandan and Batzelis, Efstratios I. (2021) Universal active power control converter for DC-Microgrids with common energy storage. IEEE Open Journal of Industry Applications, 21-35. (doi:10.1109/OJIA.2021.3063625).

2020

Das, Anubrata, Batzelis, Efstratios, Anand, Sandeep and Sahoo, Soumya Ranjan (2020) An adaptive p-Q management technique for grid voltage regulation using PV inverter. In 2020 21st National Power Systems Conference, NPSC 2020. Institute of Electrical and Electronics Engineers Inc.. (doi:10.1109/NPSC49263.2020.9331760).
Batzelis, Efstratios I., Anagnostou, Georgios, Chakraborty, Chandan and Pal, Bikash C. (2020) Computation of the Lambert W function in photovoltaic modeling. Zamboni, Walter and Petrone, Giovanni (eds.) In ELECTRIMACS 2019 - Selected Papers - Volume 1. vol. 604, Springer. pp. 583-595 . (doi:10.1007/978-3-030-37161-6_44).
Batzelis, Efstratios I., Junyent-Ferre, Adria and Pal, Bikash C. (2020) MPP estimation of PV systems keeping power reserves under fast irradiance changes. In 2020 IEEE Power and Energy Society General Meeting, PESGM 2020. vol. 2020-August, IEEE Computer Society.. (doi:10.1109/PESGM41954.2020.9281698).
Karpana, Sivakrishna, Batzelis, Efstratios and Maiti, Suman (2020) Modeling and analysis of zig-zag boost converter for battery charging applications. In PIICON 2020 - 9th IEEE Power India International Conference. Institute of Electrical and Electronics Engineers Inc.. (doi:10.1109/PIICON49524.2020.9112897).

2019

Batzelis, Efstratios I., Anagnostou, Georgios, Cole, Ian R., Betts, Thomas R. and Pal, Bikash C. (2019) A state-space dynamic model for photovoltaic systems with full ancillary services support. IEEE Transactions on Sustainable Energy, 10 (3), 1399-1409, [8536445]. (doi:10.1109/TSTE.2018.2880082).
Su, Di, Batzelis, Efstratios and Pal, Bikash (2019) Machine learning algorithms in forecasting of photovoltaic power generation. In SEST 2019 - 2nd International Conference on Smart Energy Systems and Technologies. Institute of Electrical and Electronics Engineers Inc.. (doi:10.1109/SEST.2019.8849106).
Batzelis, Efstratios (2019) Non-iterative methods for the extraction of the single-diode model parameters of photovoltaic modules: a review and comparative assessment. Energies, 12 (3), [358]. (doi:10.3390/en12030358).

2018

Batzelis, Efstratios I., Anagnostou, Georgios and Pal, Bikash C. (2018) A state-space representation of irradiance-driven dynamics in two-stage photovoltaic systems. IEEE Journal of Photovoltaics, 8 (4), 1119-1124. (doi:10.1109/JPHOTOV.2018.2839261).
Batzelis, Efstratios I., Papathanassiou, Stavros A. and Pal, Bikash C. (2018) PV system control to provide active power reserves under partial shading conditions. IEEE Transactions on Power Electronics, 33 (11), 9163-9175, [8331931]. (doi:10.1109/TPEL.2018.2823426).

2017

Nikolaou, Nikolaos, Batzelis, Efstratios and Brown, Gavin (2017) Gradient boosting models for photovoltaic power estimation under partial shading conditions. Kramer, Oliver, Madnick, Stuart, Woon, Wei Lee and Aung, Zeyar (eds.) In Data Analytics for Renewable Energy Integration: Informing the Generation and Distribution of Renewable Energy - 5th ECML PKDD Workshop, DARE 2017, Revised Selected Papers. vol. 10691 LNAI, Springer Verlag. pp. 13-25 . (doi:10.1007/978-3-319-71643-5_2).
Batzelis, Efstratios I., Kampitsis, Georgios E. and Papathanassiou, Stavros A. (2017) Power reserves control for PV systems with real-time MPP estimation via curve fitting. IEEE Transactions on Sustainable Energy, 8 (3), 1269-1280, [7864452]. (doi:10.1109/TSTE.2017.2674693).
Batzelis, Efstratios I. (2017) Simple PV performance equations theoretically well founded on the single-diode model. IEEE Journal of Photovoltaics, 7 (5), 1400-1409, [7950901]. (doi:10.1109/JPHOTOV.2017.2711431).
Kolesnik, Sergei, Sitbon, Moshe, Lineykin, Simon, Batzelis, Efstratios, Papathanassiou, Stavros, Suntio, Teuvo and Kuperman, Alon (2017) Solar irradiation independent expression for photovoltaic generator maximum power line. IEEE Journal of Photovoltaics, 7 (5), 1416-1420, [7961142]. (doi:10.1109/JPHOTOV.2017.2713404).

2016

Batzelis, Efstratios I. and Papathanassiou, Stavros A. (2016) A method for the analytical extraction of the single-diode PV model parameters. IEEE Transactions on Sustainable Energy, 7 (2), 504-512, [7355389]. (doi:10.1109/TSTE.2015.2503435).
Batzelis, Efstratios and Papathanassiou, Stavros (2016) An algorithm to detect partial shading conditions in a PV system. Mamalis, A.G., Kladas, Antonios G., Enokizono, Masato, Enokizono, Masato and Lazarov, Vladimir (eds.) In Applied Electromagnetic Engineering for Advanced Materials from Macroto Nanoscale. vol. 856, Trans Tech. pp. 303-308 . (doi:10.4028/www.scientific.net/MSF.856.303).
Batzelis, Efstratios, Samaras, Konstantinos, Vokas, Georgios and Papathanassiou, Stavros (2016) Off-grid inverter faults: diagnosis, symptoms and cause of failure. Mamalis, A.G., Kladas, Antonios G., Enokizono, Masato, Enokizono, Masato and Lazarov, Vladimir (eds.) In Applied Electromagnetic Engineering for Advanced Materials from Macroto Nanoscale. vol. 856, Trans Tech. pp. 315-321 . (doi:10.4028/www.scientific.net/MSF.856.315).

2015

Batzelis, Efstratios I., Kampitsis, Georgios E., Papathanassiou, Stavros A. and Manias, Stefanos N. (2015) Direct MPP calculation in terms of the single-diode PV model parameters. IEEE Transactions on Energy Conversion, 30 (1), 226-236, [6918425]. (doi:10.1109/TEC.2014.2356017).
Kampitsis, Georgios, Batzelis, Efstratios, Gati, Eleni, Papathanassiou, Stavros and Manias, Stefanos (2015) Electro-thermal characterization of 1.2 kV normally-on SiC JFETs under hard switch fault. In 2015 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015. Institute of Electrical and Electronics Engineers Inc.. (doi:10.1109/EPE.2015.7309054).
Batzelis, Efstratios I., Georgilakis, Pavlos S. and Papathanassiou, Stavros A. (2015) Energy models for photovoltaic systems under partial shading conditions: a comprehensive review. IET Renewable Power Generation, 9 (4), 340-349. (doi:10.1049/iet-rpg.2014.0207).
Psarros, Georgios N., Batzelis, Efstratios I. and Papathanassiou, Stavros A. (2015) Partial shading analysis of multistring PV arrays and derivation of simplified MPP expressions. IEEE Transactions on Sustainable Energy, 6 (2), 499-508, [7042759]. (doi:10.1109/TSTE.2015.2389715).

2014

Batzelis, Efstratios I., Routsolias, Iason A. and Papathanassiou, Stavros A. (2014) An explicit pv string model based on the lambert w function and simplified mpp expressions for operation under partial shading. IEEE Transactions on Sustainable Energy, 5 (1), 301-312, [6670101]. (doi:10.1109/TSTE.2013.2282168).

Dr Stratis Batzelis PhD

Research

Publications

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Research

Research interests

Publications

2022

2021

2020

2019

2018

2017

2016

2015

2014

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