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Authors = Olindo Isabella ORCID = 0000-0001-7673-0163

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16 pages, 1763 KiB  
Article
Lessons Learned from Four Real-Life Case Studies: Energy Balance Calculations for Implementing Positive Energy Districts
by Helmut Bruckner, Svitlana Alyokhina, Simon Schneider, Manuela Binder, Zain Ul Abdin, Rudi Santbergen, Maarten Verkou, Miro Zeman, Olindo Isabella, Marco Pagliarini, Cristiana Botta and Ana Streche
Energies 2025, 18(3), 560; https://doi.org/10.3390/en18030560 - 24 Jan 2025
Cited by 4 | Viewed by 1199
Abstract
Positive Energy Districts (PEDs) are integral to achieving sustainable urban development by enhancing energy self-sufficiency and reducing carbon emissions. This paper explores energy balance calculations in four diverse case study districts within different climatic conditions—Fiat Village in Settimo Torinese (Italy), Großschönau (Austria), Beursplain [...] Read more.
Positive Energy Districts (PEDs) are integral to achieving sustainable urban development by enhancing energy self-sufficiency and reducing carbon emissions. This paper explores energy balance calculations in four diverse case study districts within different climatic conditions—Fiat Village in Settimo Torinese (Italy), Großschönau (Austria), Beursplain in Amsterdam (Netherlands), and Lunca Pomostului in Reşiţa (Romania)—as part of the SIMPLY Positive project. Each district faces unique challenges, such as outdated infrastructure or heritage protection, which we address through tailored strategies including building renovations and the integration of renewable energy systems. Additionally, we employ advanced simulation methodologies to assess energy performance. Simulation results highlight the significance of innovative technologies like photovoltaic-thermal (PVT) systems, application of demand-side actions, and flexible grid usage. Furthermore, mobility assessments and resident-driven initiatives demonstrate the critical role of community engagement in reducing carbon footprints. This study underscores the adaptability of PED frameworks across varied urban contexts and provides actionable insights for scaling similar strategies globally, supporting net-zero energy targets. Full article
(This article belongs to the Special Issue Advanced Energy Systems in Energy Resilient, Zero/Positive Energy Buildings, Communities and Districts)
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12 pages, 1925 KiB  
Article
Study on the Effect of Irradiance Variability on the Efficiency of the Perturb-and-Observe Maximum Power Point Tracking Algorithm
by Victor Arturo Martinez Lopez, Ugnė Žindžiūtė, Hesan Ziar, Miro Zeman and Olindo Isabella
Energies 2022, 15(20), 7562; https://doi.org/10.3390/en15207562 - 13 Oct 2022
Cited by 13 | Viewed by 2369
Abstract
Irradiance variability is one of the main challenges for using photovoltaic energy. This variability affects the operation of maximum power point trackers (MPPT) causing energy losses. The logic of the Perturb-and-Observe MPPT algorithm is particularly sensitive to quick irradiance changes. We quantified the [...] Read more.
Irradiance variability is one of the main challenges for using photovoltaic energy. This variability affects the operation of maximum power point trackers (MPPT) causing energy losses. The logic of the Perturb-and-Observe MPPT algorithm is particularly sensitive to quick irradiance changes. We quantified the existing relation between irradiance variations and efficiency loss of the logic of the Perturb-and-Observe MPPT algorithm, along with the sensitivity of the MPPT to its control parameters. If the algorithm parameters are not tuned properly, its efficiency will drop to nearly 2%. Irradiance variability causes a systematic energy loss of the algorithm that can only be quantified by ignoring the hardware components. With this, we aim to improve the energy yield estimation by providing an additional efficiency loss to be considered in the calculations. Full article
(This article belongs to the Special Issue Solar Cells, Circuits and Systems for PV Conversion)
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21 pages, 7642 KiB  
Article
Sustainable E-Bike Charging Station That Enables AC, DC and Wireless Charging from Solar Energy
by Gautham Ram Chandra Mouli, Peter Van Duijsen, Francesca Grazian, Ajay Jamodkar, Pavol Bauer and Olindo Isabella
Energies 2020, 13(14), 3549; https://doi.org/10.3390/en13143549 - 10 Jul 2020
Cited by 64 | Viewed by 23426
Abstract
If electric vehicles have to be truly sustainable, it is essential to charge them from sustainable sources of electricity, such as solar or wind energy. In this paper, the design of solar powered e-bike charging station that provides AC, DC and wireless charging [...] Read more.
If electric vehicles have to be truly sustainable, it is essential to charge them from sustainable sources of electricity, such as solar or wind energy. In this paper, the design of solar powered e-bike charging station that provides AC, DC and wireless charging of e-bikes is investigated. The charging station has integrated battery storage that enables for both grid-connected and off-grid operation. The DC charging uses the DC power from the photovoltaic panels directly for charging the e-bike battery without the use of an AC charging adapter. For the wireless charging, the e-bike can be charged through inductive power transfer via the bike kickstand (receiver) and a specially designed tile (transmitter) at the charging station, which provides maximum convenience to the user. Full article
(This article belongs to the Special Issue PV Charging and Storage for Electric Vehicles)
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