Browsing by Author "Makrides, George"
Now showing items 1-20 of 34
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Conference Object
Advanced Diagnostic Approach of Failures for Grid-Connected Photovoltaic (PV) Systems
Livera, Andreas; Theristis, Marios; Makrides, George; Sutterlueti, Juergen; Georghiou, George (2018)Real-time identification of failures in photovoltaic (PV) systems is crucial for achieving reactive maintenance schemes that, in turn, will increase the system reliability and guarantee the lifetime output. Following this ...
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Conference Object
Advanced failure diagnostic approach for grid-connected photovoltaic systems
Livera, Andreas; Theristis, Marios; Makrides, George; Georghiou, George (2018)
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Article
Analysis of Photovoltaic Performance Loss Rates of Six Module Types in Five Geographical Locations
Ingenhoven, Philip; Belluardo, Giorgio; Makrides, George; Georghiou, George E.; Rodden, Paul; Frearson, Lyndon; Herteleer, Bert; Bertani, Dario; Moser, David (2019)In this paper, the annual performance loss rates (PLRs) of five different grid-connected photovoltaic (PV) technologies based on outdoor field measurements were computed. The data used were collected in five different ...
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Conference Object
BIPV courseware for higher education and professionals
van Sark, Wilfried; van Leeuwen, Joost; Bontekoe, Eelke; Louwen, Atse; Weiss, Ingrid; Arancón, Sofía; Tabakovic, Momir; Fechner, Hubert; Georghiou, George; Makrides, George; Hadjipanayi, Maria; Loucaidou, Eliza; Ioannidou, Monica (2018)It is generally expected that in the future, photovoltaics will be able to contribute substantially to the mainstream power production, and that through their widespread commercialization, Building Integrated Photovoltaics ...
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Conference Object
Characterisation and classification of daily sky conditions between the 23rd and 27th parallel north for improved energy security
Koumparou, Ioannis; Makrides, George; Anastasiou, Charalambos; Georghiou, George E. (2016)
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Conference Object
Characterisation of the Shunt Resistance due to Potential Induced Degradation (PID) in Crystalline Solar Cells
Florides, Michalis; Makrides, George; Georghiou, George E. (2018)Different solutions have been proposed for the detection of potential induced degradation (PID), however, none of them has been proven reliable and cost effective so far. Therefore, a detection mechanism is required in the ...
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Conference Object
Day-ahead Forecasting of Solar Power Output from Photovoltaic Systems Utilising Gradient Boosting Machines
Theocharides, Spyros; Venizelou, Venizelos; Makrides, George; Georghiou, George E. (2018)Accurate day-ahead photovoltaic (PV) power output forecasting techniques are important both for grid and plant operators. In this work, a machine learning model was implemented based on gradient boosting machine (GBM), for ...
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Conference Object
Designing a pareto-superior time-varying pricing for residential prosumers
Venizelou, Venizelos; Makrides, George; Efthymiou, Venizelos; Georghiou, George E. (2018)In recent years, residential electricity consumption has been rapidly increasing, leading to inevitable power grid reinforcement. To cope with these challenges Demand Side Management (DSM) can play an important role and ...
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Conference Object
Development and Implementation of BIPV Courseware for Higher Education and Professionals
Tabakovic, Momir; Fechner, Hubert; van Leeuwen, Joost; Bontekoe, Eelke; van Sark, Wilfried; Louwen, Atse; Arancon, Sofia; Weiss, Ingrid; Georghiou, George; Makrides, George; Hadjipanayi, Maria; Loucaidou, Eliza; Ioannidou, Monica (Springer, 2019)It is generally expected that in the future, photovoltaics will be able to contribute substantially to the mainstream power production, and that through their widespread commercialization, Building-Integrated Photovoltaics ...
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Article
Development of a novel time-of-use tariff algorithm for residential prosumer price-based demand side management
Venizelou, Venizelos; Philippou, Nikolas; Hadjipanayi, Maria; Makrides, George; Efthymiou, Venizelos; Georghiou, George E. (2018)Through the application of flexible Time-of-Use (ToU) tariffs, demand side management (DSM) can be facilitated in order to alleviate grid congestion problems and potential network reinforcement. In this work, a novel ...
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Conference Object
Development of building-integrated Photovoltaic (BIPV) innovative courseware for higher education and professionals
Livera, Andreas; Florides, Michalis; Theristis, Marios; Makrides, George; Georghiou, George E. (IEEE, 2018)Accurate and consistent performance assessment of photovoltaic (PV) systems with the use of advanced failure diagnostic tools is essential to safeguard high levels of production. The scope of this work is to propose a ...
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Article
Early Detection of Potential Induced Degradation by Measurement of the Forward DC Resistance in Crystalline PV Cells
Florides, Michalis; Makrides, George; Georghiou, George E. (2019)Potential induced degradation (PID) is still a serious threat for the photovoltaic (PV) industry and it is expected to aggravate due to the tendency to increase the operating voltage of PV systems. Therefore, a method which ...
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Conference Object
Early potential induced degradation (PID) detection in the field: Cell shunt resistance characterisation at different degradation rates
Florides, Michalis; Makrides, George; Georghiou, George (2018)This paper examines the use of two different voltage measurement methods which could be used to detect Potential Induced Degradation (PID) in the field before any significant power loss occurs. The two methods are the open ...
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Article
Energy yield prediction errors and uncertainties of different photovoltaic models
Makrides, George; Zinsser, Bastian; Schubert, Markus; Georghiou, George E. (2013)Mathematical, empirical, and electrical models have long been implemented and used to predict the energy yield of many photovoltaic (PV) technologies. The purpose of this paper is to compare the annual DC energy yield ...
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Conference Object
Failure diagnosis of short- and open-circuit fault conditions in PV systems
Livera, Andreas; Florides, Michalis; Theristis, Marios; Makrides, George; Georghiou, George E. (IEEE, 2018)Accurate and consistent performance assessment of photovoltaic (PV) systems with the use of advanced failure diagnostic tools is essential to safeguard high levels of production. The scope of this work is to propose a ...
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Article
Five-year performance and reliability analysis of monocrystalline photovoltaic modules with different backsheet materials
Makrides, George; Theristis, Marios; Bratcher, James; Pratt, Jeff; Georghiou, George E. (2018)Elevated operating temperatures decrease the energy yield and reliability of photovoltaic (PV) systems. In order to minimize these thermal losses and stresses, different types of packaging materials for PV modules need to ...
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Conference Object
Impact of Missing Data on the Estimation of Photovoltaic System Degradation Rate
Livera, Andreas; Phinikarides, Alexander; Makrides, George; Georghiou, George E. (2017)In this paper, the impact of missing data and the robustness of commonly used statistical techniques to calculate the annual degradation rate of crystalline-Silicon (c-Si) photovoltaic (PV) systems was analyzed. In addition, ...
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Conference Object
Intra-day Solar Irradiance Forecasting Based on Artificial Neural Networks
Theocharides, Spyros; Kynigos, Marios; Theristis, Marios; Makrides, George; Georghiou, George E. (2019)Accurate solar irradiance forecasting is important for improving forecasting precision of photovoltaic (PV) power. In this study, an intra-day (i.e. 1 to 6 hours ahead) machine learning model based on an artificial neural ...
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Conference Object
Intra-day solar irradiance forecasting for PV power generation utilising machine learning models
Theocharides, Spyros; Makrides, George; Theristis, Marios; Georghiou, George (2019)Accurate PV production forecasting is an important feature that can assist utilities and plant operators in thedirection of energy management and dispatchability planning. In this work, intra-day (1 to 3 hours ahead) solar ...
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Conference Object
Intra-hour Forecasting for a 50 MW Photovoltaic System in Uruguay: Baseline Approach
Theocharides, Spyros; Alonso-Suarez, Rodrigo; Giacosa, Gianina; Makrides, George; Theristis, Marios; Georghiou, George E. (2019)The increased penetration of photovoltaic (PV) generation introduces new challenges for the stability of electricity grids. In this work, machine learning (ML) techniques were implemented to forecast PV power production ...