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Energies and Quality Journal. ISSN: 2659-8779- HOME
E&Q4-1.
Volume 4, Issue 1, July 2026- 
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203 |
1-12 Abstract This paper introduces an innovative technique for analyzing electrical power operations and the associated control challenges. The technique, along with its essential tools, significantly enhances the operational sustainability of electrical power system engineering. It provides quick solutions to sustainability issues, effectively minimizing the need for extensive analyses through various methods. ...READ MORE
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208 |
13-19 Abstract Hydroelectric reservoirs in Colombia are vast, underutilized surfaces with enormous potential in complementary renewable generation via floating photovoltaic (FPV) systems. The study assesses the technical potential and feasibility of FPV deployment in the country’s largest hydroelectric power plants, such as Guavio, San Carlos, Ituango, Chivor, Sogamoso, Porce III, Pagua, Guatapé, and Betania, each exceeding 500 megawatts (MW) of effective net capacity. In order to avail the available information from existing reservoir surface and solar irradiance maps and in terms of typical FPV performance variables, potential annual energy production is estimated over several (5%, 15%, and 30%) coverage scenarios...READ MORE
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211 |
20-25 Abstract The use of daylight is a major concern to save energy and decrease the workload of lighting installations. Over the last decades, the methods assessing daylighting performance in workspaces have transitioned from static metrics based on ideal sky conditions and point-in-time photometric descriptors to dynamic models relying on hourly climate data. In parallel, other approaches have been developed, including occupant-oriented perceptual metrics and non-visual indicators aimed at characterizing the potential effects of daylight on physiological and circadian responses....READ MORE
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220 |
26-31 Abstract This study examines the inconsistencies between scientific advances in daylight metrics and their implementation in the regulations and certification standards governing workplace design. Over the last decades, climate-based daylight metrics (CBDMs) have become prevalent in research, since this measure provides a more realistic representation of annual daylight variations. ...READ MORE
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222 |
32-37 Abstract This work presents a data-driven methodology for the identification and control of Dual Active Bridge (DAB) DC–DC converters, aimed at reducing the complexity associated with highly nonlinear analytical models. By exploiting an angle phase-shift representation instead of a detailed PWM-based model, the proposed approach simplifies both system excitation and identification while preserving the essential power-transfer dynamics of the converter. ...READ MORE
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38-42 Abstract The electrification of port activities through Onshore Power Supply (OPS) and the integration of on-site renewables are key levers to reduce emissions, yet they also increase peak power requirements and operational exposure to price variability. Robust planning therefore requires consistent forecasting of future renewable generation and future demand (including OPS uptake), coupled with an optimisation layer to allocate renewable electricity and schedule hydrogen production via electrolysis. ...READ MORE
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224 |
43-47 Abstract High photovoltaic (PV) penetration in distribution networks creates increasing voltage regulation challenges due to the variability of generation and demand. Overvoltages during periods of high PV production and undervoltages during peak demand can compromise voltage quality compliance. Traditional voltage regulation based on fixed or off-load tap changers lacks flexibility and often requires planned outages....READ MORE
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230 |
48-54 Abstract This case study presents the design, development, and implementation of a residential-scale hybrid solar and wind power generation system installed at the Center of Product Design and Advanced Manufacturing (CPDAM) at Frostburg State University (FSU). The “WISE” system integrates a 2-kW photovoltaic (PV) array and a 1.8 kW wind turbine mounted on a 45-ft monopole tower, jointly supplying a small residential-type building through a grid-tied configuration with net metering. Extensive resource assessment was conducted using three Davis Weather Pro®stations and long-term solar-insolation modeling. ...READ MORE
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235 |
55-59 Abstract The progressive closure of coal-fired power plants driven by decarbonisation policies is increasing the need to identify low-carbon alternatives that can be rapidly deployed. In this context, floating photovoltaic (FPV) systems in inland bodies represent a solution because they can make use of lakes and reservoirs, minimising land-use conflicts. This study proposes a methodology to assess the suitability of inland water bodies as potential locations for FPV plants, considering exclusion zones, water body conditions, proximity to logistics and electrical infrastructure, energy resource potential, and socio-political factors. ...READ MORE
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244 |
60-65 Abstract This article analyzes the impact of delays in implementing the objectives of the National Integrated Energy and Climate Plan (PNIEC) on the business models of stand-alone reversible pumped storage in Spain. This technology is essential for integrating renewable energies through price arbitrage, taking advantage of market volatility to pump during low-cost hours and turbine during peak hours...READ MORE
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247 |
66-71 Abstract This study evaluates the performance of an agrivoltaic system located in Valencia (Spain) over a 6-month period (mid-March to mid-September) by analysing the interaction between photovoltaic (PV) generation, water consumption, and the physiological requirements of the crop, in this case Citrus limon (lemon). The research compares fixed-tilt panels against single-axis trackers. For the tracking system, two algorithms were modelled: pure energy maximisation, and a yield-constrained model....READ MORE
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72-77 Abstract This paper presents an integrated analytical framework for residential energy management that combines appliance-level load monitoring with behavioral pattern discovery using data from a unified smart home deployment. The research employs a two-phase methodology on synchronized datasets collected from the same residential environment. First, a Random Forest classifier is trained to identify individual household appliances from aggregate electrical measurements, achieving highly accurate classification performance for eight appliance types. ...READ MORE
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78-83 Abstract The integration of renewable energy–based sourcesinto the electrical power system presents challenges arising from the inherent uncertainty in their generation, particularly in the case of wind or photovoltaic power plants due to their high variability. These challenges can be mitigated through the use of large-scale energy storage systems. Hydrogen emerges as an attractive energy vector with significant development potential; its wide availability, ease of production, storage, and conversion into thermal and electrical energy position it as a feasible solution....READ MORE
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256 |
84-89 Abstract The progressive integration of renewable energysources into the power system introduces significant challenges due to the inherent variability of their generation. Energy storage systems represent an effective solution to mitigate these challenges. Among small-scale storage technologies, battery-based systems and hydrogen fuel cell systems are the most widely adopted. Consequently, future engineers responsible for planning and operating power systems must be adequately trained in the principles, operation, and integration of these energy storage technologies. ...READ MORE
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274 |
90-95 Abstract The large-scale integration of renewable energy sources is transforming traditional power grids. Renewable generation is typically connected to distribution networks through voltage source converters (VSCs) operating under grid-following (GFL) control, which has raised technical concerns regarding system stability and security. Grid-forming (GFM) VSCs are emerging as a solution, capable of establishing a grid and operating in parallel with other devices via self-synchronisation mechanisms. ...READ MORE
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276 |
96-101 Abstract The growth in energy demand and greenhouse gas emissions has intensified the search for renewable sources to
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