Listar Departamentos y Centros - Sailak eta Ikastegiak por autor UPNA "Marcos Álvarez, Javier"
Mostrando ítems 1-20 de 20
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Analysis of a CIS based PV generator versus a multicrystalline generator under outdoor long-term exposure
Parra Laita, Íñigo de la
; Guerra Menjívar, Moisés Roberto; Marcos Álvarez, Javier ; García Solano, Miguel ; Marroyo Palomo, Luis (IEEE, 2021)
Contribución a congreso / Biltzarrerako ekarpena 
The worldwide growth of the PV market has been almost exponential during the last years. Together with conventional crystalline (c-Si) PV modules, “new” commercially available PV technologies such as copper indium ... -
Analysis of polyamide and fluoropolymer backsheets: Degradation and insulation failure in field-aged photovoltaic modules
Pascual Miqueleiz, Julio María ; García Solano, Miguel ; Marcos Álvarez, Javier ; Marroyo Palomo, Luis (John Wiley & Sons, 2022)
Artículo / Artikulua
Durability of photovoltaic (PV) modules is of great concern not only from the point of view of cost-effectiveness but also from the point of view of safety and sustainability. The backsheet of a PV module is one of the ... -
A comparative study of degradation and performance of thin film photovoltaic generators versus a multi-crystalline generator
Parra Laita, Íñigo de la ; García Solano, Miguel ; Marcos Álvarez, Javier ; Marroyo Palomo, Luis (2013)
Contribución a congreso / Biltzarrerako ekarpena
Thin film solar cells (TFSC) are supposed to have higher energy yield rates than crystalline silicon (Si-x) mainly possible by some enhancements like lower temperature coefficient and higher absorption of diffuse light. ... -
Compensation of forecast error in large PV plants with battery storage: associated strategies
Marcos Álvarez, Javier ; Parra Laita, Íñigo de la ; Muñoz Escribano, Mikel ; García Solano, Miguel ; Marroyo Palomo, Luis (2017)
Contribución a congreso / Biltzarrerako ekarpena
As penetration rates of utility-scale photovoltaics (PV) increases, large PV plants will participate in the daily wholesale electricity market in the same way that wind farms. Then, PV plant owner can receive some kind of ... -
Control method to coordinate inverters and batteries for power ramp-rate control in large PV plants: minimizing energy losses and battery charging stress
González Moreno, Alejandro; Marcos Álvarez, Javier ; Parra Laita, Íñigo de la ; Marroyo Palomo, Luis (Elsevier, 2023)
Artículo / Artikulua
This work presents a novel control method for multi-megawatt photovoltaic (PV) plants that is able to regulate each plant inverter and the battery system to mitigate PV power fluctuations. The proposed control method makes ... -
Control strategies to smooth short-term power fluctuations in large photovoltaic plants using battery storage systems
Marcos Álvarez, Javier ; Parra Laita, Íñigo de la ; García Solano, Miguel ; Marroyo Palomo, Luis (MDPI, 2014)
Artículo / Artikulua
The variations in irradiance produced by changes in cloud cover can cause rapid fluctuations in the power generated by large photovoltaic (PV) plants. As the PV power share in the grid increases, such fluctuations may ... -
Grid integration of large-scale PV plants
Parra Laita, Íñigo de la (2015)
Tesis doctoral / Doktoretza tesia
Over the last few years, the considerable increase in the number of multi-MW PV plants has led transmission system operators (TSO) to express concern over potential PV power fluctuations caused by transient clouds. As a ... -
Identification of critical parameters for the design of energy management algorithms for Li-ion batteries operating in PV power plants
Berrueta Irigoyen, Alberto ; Soto Cabria, Adrián ; Marcos Álvarez, Javier ; Parra Laita, Íñigo de la ; Sanchis Gúrpide, Pablo ; Ursúa Rubio, Alfredo (IEEE, 2020)
Artículo / Artikulua
Lithium-ion batteries are gaining importance for a variety of applications due to their price decrease and characteristics improvement. For a proper use of such storage systems, an energy management algorithm (EMA) is ... -
Influence of control in cycling degradation when batteries perform PV ramp-rate control
González Moreno, Alejandro; Marcos Álvarez, Javier ; Parra Laita, Íñigo de la ; Marroyo Palomo, Luis (IEEE, 2023)
Artículo / Artikulua
This work studies the importance of the correct selection of control parameters in order to avoid unnecessary cycling in batteries when they perform PV smoothing. The classic ramp-rate control method (CRRC) is studied ... -
Inverter-based PV ramp-rate limitation strategies: minimizing energy losses
González Moreno, Alejandro; Marcos Álvarez, Javier ; Parra Laita, Íñigo de la ; Marroyo Palomo, Luis (IEEE, 2022)
Contribución a congreso / Biltzarrerako ekarpena
This work analyzes the reduction of power generation in strategies that regulate the PV ramp-rate by using inverter limitation. Although the operating principle implies some energy production losses, not all these ... -
Long-term degradation rate of crystalline silicon PV modules at commercial PV plants: an 82-MWp assessment over 10 years
Pascual Miqueleiz, Julio María ; Martínez Moreno, Francisco; García Solano, Miguel ; Marcos Álvarez, Javier ; Marroyo Palomo, Luis ; Lorenzo Pigueiras, Eduardo (Wiley, 2021)
Artículo / Artikulua
Due to high competitiveness in the PV sector, despite the low degradation rate of crystalline silicon PV modules (below 0.5%/year), it is still important for utilities to know its actual value due to its impact on energy ... -
On the calculation of the STC power of PV generators by using typical monitoring system data
Muñoz Escribano, Mikel; Parra Laita, Íñigo de la ; García Solano, Miguel ; Marcos Álvarez, Javier ; Marroyo Palomo, Luis (2017)
Contribución a congreso / Biltzarrerako ekarpena
The properly in-field characterization of the power at Standard Test Conditions, PSTC, of PV generators is becoming increasingly important in order to evaluate their performance and its evolution in time. Within the state ... -
On the on-site measurement of the degradation rate of crystalline silicon PV modules at plant level
Pascual Miqueleiz, Julio María ; Berrueta Irigoyen, Alberto ; Marcos Álvarez, Javier ; García Solano, Miguel ; Marroyo Palomo, Luis (IEEE, 2018)
Contribución a congreso / Biltzarrerako ekarpena
This paper proposes a method for measuring the degradation rate of crystalline silicon PV modules at plant level in two different ways as a form of verification. As actual levels of degradation rate have been observed to ... -
Outdoor performance of a CdTe based PV generator during 5 years of operation
Guerra Menjívar, Moisés Roberto; Parra Laita, Íñigo de la ; Marcos Álvarez, Javier ; García Solano, Miguel ; Marroyo Palomo, Luis (IEEE, 2022)
Contribución a congreso / Biltzarrerako ekarpena
Together with the huge growth of the traditional crystalline silicon (Si-x) PV manufacturers, other thin-film solar cells have also emerged such as cadmium telluride (CdTe) manufacturers. They are characterized by the ... -
The potential of forecasting in reducing the LCOE in PV plants under ramp-rate restrictions
Cirés Buey, Eulalia; Marcos Álvarez, Javier ; Parra Laita, Íñigo de la ; García Solano, Miguel ; Marroyo Palomo, Luis (Elsevier, 2019)
Artículo / Artikulua
An increasing number of grid codes are requiring the limitation of the PV output power fluctuation over a given time scale. Batteries represent the most obvious solution to smooth power fluctuations, with the corresponding ... -
Procedimientos avanzados para el análisis del comportamiento de grandes centrales FV
Muñoz Escribano, Mikel (2018)
Tesis doctoral / Doktoretza tesia
La energía fotovoltaica (FV) ha experimentado un gran crecimiento en los últimos años y se prevé que lo siga haciendo en los próximos. La razón principal es el descenso espectacular que ha experimentado su precio. A pesar ... -
PV power forecasting using a parametric model
Muñoz Escribano, Mikel; Parra Laita, Íñigo de la ; García Solano, Miguel ; Marcos Álvarez, Javier (2015)
Contribución a congreso / Biltzarrerako ekarpena
Nowadays, accurate AC power output forecast of PV plants can play a significant role for both the system operators and PV plant owners. The first group has to program the dispatch of the electric system and the second one ... -
A PV ramp-rate control strategy to extend battery lifespan using forecasting
González Moreno, Alejandro; Marcos Álvarez, Javier ; Parra Laita, Íñigo de la ; Marroyo Palomo, Luis (Elsevier, 2022)
Artículo / Artikulua
This study analyses and presents a new ramp-rate control algorithm for smoothing PV power fluctuations, designed to address three fundamental objectives: to reduce battery cycling, to meet minimum storage requirements and ... -
Ramp-rate control in large PV plants: battery vs. short-term forecast
Marcos Álvarez, Javier ; Parra Laita, Íñigo de la ; Cirés Buey, Eulalia; Wang, Guang Chao; García Solano, Miguel ; Marroyo Palomo, Luis (2018)
Contribución a congreso / Biltzarrerako ekarpena
The changeability in the power produced by utility-scale PV plants caused by shadows due to passing clouds can compromise grid stability. Traditionally, some kind of energy storage systems (ESS) is proposed as the solution ... -
A tool for the performance evaluation and failure detection of Amareleja PV plant (Acciona) from SCADA
Muñoz Escribano, Mikel; Parra Laita, Íñigo de la ; García Solano, Miguel ; Marcos Álvarez, Javier ; Pérez, Miguel (2015)
Contribución a congreso / Biltzarrerako ekarpena
This paper describes a tool developed for the performance evaluation and failure detection in a 45.6 MWp PV plant installed by the company Acciona in Amareleja (Portugal). The paper describes the PV plant configuration and ...
