The University of Southampton
×
Electronics and Computer Science

Telephone:
02380593448
Email:
E.Batzelis@soton.ac.uk

 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

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).

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).

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).

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).

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).

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).

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).

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).

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).

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).

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, 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).

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).

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. 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 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., 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. (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).

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).

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., 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).

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).

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).

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).

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).

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).

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).

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).

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).

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).

Contact

Telephone: +44 (0) 23 8059 2380593448

Email: E.Batzelis@soton.ac.uk

Share this profile FacebookTwitterWeibo

Published: 29 January 2021
Illustration
TechOceanS will tap into Southampton expertise in microfabricated flow-cytometer technologies.

Scientists across Europe will revolutionise how we measure and monitor our changing oceans in a new €8.9 million research programme.

The TechOceanS project, coordinated by the National Oceanography Centre, will deliver a new generation of low-cost and easily deployable sensors capable of wide-scale monitoring of ocean bio-geochemistry.

The international programme will pioneer five new sensors, two imaging systems, a novel sampler and an Artificial Intelligence-driven image processing methodology, all capable of operating at depths beyond 2,000 metres.

Southampton experts in Electronics and Computer Science, including Professor Hywel Morgan and Dr Daniel Spencer, will use their skills in microfluidics and sensor design to develop miniature, autonomous biological analysers capable of continuous monitoring and characterisation of marine organisms (such as harmful alga) and micro-plastics in the oceans for many months at a time.

The interdisciplinary research will include Southampton's Dr Peter Glynne Jones and his expertise in the manipulation of microscopic particles using the forces generated by ultrasonic waves.

Professor Morgan, Head of the Biomedical Electronics Research Group, says: "The oceans are essential in regulating climate and produce most of the planet’s oxygen, yet are ruthlessly exploited. To better understand the health of the oceans we urgently require significantly improved ways of measuring key chemical, biological and ecosystem variables.

"This ambitious and exciting project led by the world-class National Oceanography Centre brings together internationally leading partners from all over Europe. It will revolutionise ocean measurements and will have long-term impact on our understanding of life in the oceans and the way we exploit these resources."

TechOceanS will actively engage with scientists, manufacturers, marine stakeholders and resource managers to target ‘Essential Ocean Variables’ that currently can only be measured by observations from a ship.

Engineers at Southampton will develop automated methods to turn vast numbers of images taken in the ocean into numerical information about the distribution of species, habitats and plastic pollution, and transmit this in near real-time over the low communication bandwidths available in the open ocean.

This will allow researchers to be instantly aware of discoveries made by autonomous systems, regardless of where they are in the world, and allow people to adapt data acquisition strategies based on up-to-date information.

Professor Blair Thornton, Director of the Centre of Excellence for In Situ and Remote Intelligent Sensing (IRIS), says: "TechOceanS will be revolutionary for how imagery is used in ocean science. Most ocean sensors make continuous measurements of scalar values like temperature, salinity or pH, where the size of data is small enough to transmit over the acoustic or global satellite bandwidths available in the open ocean. Images on the other hand, are far too large to transmit directly, and the require non-trivial analysis to extract useful information from the scenes they capture.

"This means that people normally need to go out to sea and physically recover imaging systems to make the data accessible. For remote sites that are rarely visited, this can introduce delays of months or even years from when the original events took place.

"The edge computing methods we are developing in this project will make the cameras smart enough to reliably extract and summarise important information by themselves, and through intelligent interaction with remote hosts, transmit these finding efficiently and in near real-time. Researchers won't necessarily have to go out to sea in order to make discoveries."

TechOceanS - Technologies for Ocean Sensing - is funded by the European Union's Horizon 2020 programme.

Articles that may also interest you

The Cyber Security Academy training courses

Hampshire and Sussex Cyber Cluster launched to strengthen regional cybersecurity

Breathing sensor 'sticker' could help save lives
Share this article FacebookTwitterWeibo

Published: 29 January 2021
Illustration
Caption: Richard Carter’s bike-mounted PoV display displays custom images from a linked app.

University of Southampton student Richard Carter has drawn praise in a national electronics competition for a spinning on-bike light display.

Richard and his Persistence of Vision (PoV) display have been named the runner-up in the UK Electronic Skills Foundation (UKESF) Embedded Systems Competition sponsored by UltraSoC.

The achievement immediately follows the University’s strong performance in the 2019 contest, where Southampton’s Yanislav Donchev and Torran Green claimed the top two prizes.

A PoV display renders an image to the human eye by spinning and switching on and off a series of radial strips of LEDs fast enough that the brain considers the full circle to be a solid image.

Richard designed, created and trialled the light display as part of his MEng Electronic Engineering degree to exhibit a choice of images from the spokes of a bicycle wheel.

"My goal was to design a product that improves the safety of cyclists in the dark, providing a lightweight active light source that shines left and right relative to the cyclist," he explains. "In addition, the ability to display custom images uploaded from an app introduces some entertainment value to using the light.

"I thoroughly enjoyed designing and working on my project so the opportunity to be recognised for the success I achieved is especially rewarding. As with many embedded systems, there are many things from my project that I would like to improve on, and I have already started working on the next iteration of my PoV Bike Wheel Display. My thanks go to UltraSoC and UKESF for sponsoring, organising, and judging the competition."

Richard has boosted his career prospects as a UKESF Scholar. The scheme, which supported a record-breaking number of Southampton students in 2020, offers a £1,000 annual bursary and paid work placements with mentoring from a leading employer in the electronics sector.

Richard completed his sponsored internship as a System Validation Engineer with Qualcomm remotely over the summer.

A prominent member of the ECS Society (ECSS), he has shared his passion during his degree as one of the organisers of the Microhack hackathon, which gave students hands-on experience with microcontroller boards and sample hardware.

Professor Geoff Merrett, Director of Outreach and Recruitment at Electronics and Computer Science (ECS), says: "Many congratulations to Richard, it's great to see Southampton students being successful in the UKESF Competitions yet again. This is a testament to the excellent quality of our students, and particularly in the domain of embedded systems."

Articles that may also interest you

The Cyber Security Academy training courses

Hampshire and Sussex Cyber Cluster launched to strengthen regional cybersecurity

Breathing sensor 'sticker' could help save lives
Share this article FacebookTwitterWeibo

Published: 29 January 2021
Illustration
The PeRSo respirator in use at University Hospital Southampton.

A protective respirator created by researchers at the University of Southampton is now being used by healthcare staff in over 20 NHS trusts around the country.

Over 10,000 respirators have been provided to trusts from the south of England to Scotland after it received approval from the Health and Safety Executive for use during the COVID-19 pandemic.

Experts in Electronics and Computer Science (ECS) worked with engineers, medical staff and industry partners to rapidly develop the Personal Respirator Southampton, known as PeRSo, which consists of a fabric hood for the wearer's head and a plastic visor to protect their face.

The small portable unit delivers clean air through a High Efficiency Particulate Air (HEPA) filter with belt-mounted fan pack and can be worn throughout a long shift and reused after appropriate cleaning.

The multidisciplinary team was co-led by ECS’s Professor Hywel Morgan and respiratory medicine expert Professor Paul Elkington, who both were awarded MBEs for their work in the 2020 Queen’s Birthday Honours.

The respirator has also been honoured by the Royal Academy of Engineering with a President’s Special Award for Pandemic Service.

Dr Ric Gillams, a Research Fellow in ECS’s Biomedical Electronics Research Group, says: “I felt very helpless in the early days of the pandemic and so I was delighted to be part of the PeRSo team. We had a lot of support from across the University, from Southampton General Hospital and from a large number of companies around the UK.

“The pressure on healthcare workers is now even greater than it was in the first wave of the pandemic and the feedback from PeRSo users has been very positive. It is very rewarding to see the respirators in action and to have made a contribution to the safety of those working on the frontline treating patients with COVID-19.”

As the country went into the first lockdown in March 2020, a collaboration of University engineers, clinicians at University Hospital Southampton and industry partners including McLaren, Kemp Sails and INDO Lighting came together to develop PeRSo. In just one week, this partnership turned an idea into a prototype which was then tested on wards and manufactured at scale by INDO Lighting in less than a month.

Dr Becky Eggleston, a doctor on the general intensive care unit at University Hospital Southampton, says: “We are extremely grateful for all the work that the team has put into producing the PeRSo hoods. They are much more comfortable than alternative PPE, which makes a huge difference to us during our long shifts.

“Being able to see each other's faces makes it easier for our team to communicate, and knowing that patients take comfort from being able to see the faces of the people looking after them is a boost to morale.”

Read the full story on the main news page.

Articles that may also interest you

The Cyber Security Academy training courses

Hampshire and Sussex Cyber Cluster launched to strengthen regional cybersecurity

Breathing sensor 'sticker' could help save lives
Share this article FacebookTwitterWeibo
AccelerComm's ultra-fast 5G IP can be programmed onto an FPGA hardware accelerator chip.

Pages