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- 实验方案
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Exergoeconomic analysis of a solar photovoltaic-based direct evaporative air-cooling system
摘要： The target of this work is to perform the exergoeconomic analysis of a solar photovoltaic-based direct evaporative air-cooling system. The system was investigated experimentally with different thicknesses of cellulose and straw pads. For inlet air rates up to 1000 m3/h, the maximum changes in the humidity and temperature of outlet air are achieved by a pad with a thickness of 30 cm. A comprehensive mathematical model was developed for the system and the exergoeconomic analysis of the system was carried out. The influence of the effective parameter on the performance of the system was investigated. For an inlet air with a temperature of 30 °C and relative humidity of 30%, the maximum system exergy efficiency was obtained about 20%. With changes in the water temperature from 15 to 27 °C, inlet air rate from 300 to 1500 m3/h, and inlet air temperature from 26 to 34 °C, the system exergoeconomic factor changes up to 60%. The current system was compared with a conventional system and results showed that for four early years of systems lifetime, the exergoeconomic factor of the conventional system is greater than the solar system due to its lower initial investment, and for later years is lower due to its larger operating cost.
关键词： Cellulose and straw pads,Mathematical modeling,Exergoeconomic analysis,Solar photovoltaic panel,Direct evaporative air-cooling
更新于2025-09-16 10:30:52
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Performance enhancement of Hybrid interconnected Solar Photovoltaic array using shade dispersion Magic Square Puzzle Pattern technique under partial shading conditions
摘要： During Partial Shading (PS) condition, Solar Photovoltaic (SPV) array exhibits multiple peaks in both Power-voltage and Current-voltage characteristics, leading to Mismatch Power Losses (MPL). Overcoming the losses, enhancing power and performance improvement of SPV array during PS conditions is a challenging task. MPL due to PS condition, not only depend on the shaded area, but also on SPV array Interconnections and Shading Patterns. The present investigation aims to enhance the output power of SPV array subjected to PS conditions. Studies are initially performed on eight combinations of SPV array test panel interconnections. Results obtained imply improved performance of the ‘Proposed New Reconfigured Hybrid interconnected array’ under four defined different typical partial shading conditions. Also, performance of ‘Proposed New Hybrid interconnected array’ with ‘Shade Dispersion Magic Square Puzzle Pattern’ technique applied is shown to be superior, compared with either SUDUKO or ODD-EVEN shade dispersion technique.
关键词： Shade Dispersion Magic Square Puzzle Pattern (SDMSPP),Solar Photovoltaic (SPV),Hybrid Interconnections,Partial Shading (PS),Power Enhancement
更新于2025-09-16 10:30:52
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Coyote optimization algorithm for the parameter extraction of photovoltaic cells
摘要： In this paper, a new and powerful metaheuristic optimization technique known as the Coyote Optimization Algorithm (COA) is proposed for the parameter extraction of the PV cell/module. It is utilized to identify the parameters of the single diode and two-diode models. Inspired by the social norms adopted by the coyotes to ensure the survivability of their species, the COA possesses several outstanding merits such as low number of control parameters, ease of implementation and diverse mechanisms for balancing exploration and exploitation. For physically meaningful solutions, a set of parametric constraints is introduced to prevent the coyotes from straying outside of the predefined boundaries of the search space. Extensive tests indicate that the proposed optimizer exhibits superior accuracy compared to other state-of-the-art EA-based parameter extraction methods. It achieved root-mean-square error (RSME) as low as 7.7301E-04 A and 7.3265E-04 A, for the single-diode and two-diode models, respectively. Moreover, the algorithm maintains outstanding performance when tested on an assortment of modules of different technologies (i.e. mono-crystalline, poly-crystalline, and thin film) at varying irradiance and temperature. The standard deviations (STDs) of the fitness values over 35 runs are measured to be less than 1 × 10?5 for both models. This suggests that the results produced by the algorithm are highly consistent. With these outstanding merits, the COA is envisaged to be a competitive option for the parameter extraction problem of PV cell/module.
关键词： Equivalent circuit model,Solar photovoltaic,Evolutionary algorithm,Coyote optimization algorithm,Parameter extraction
更新于2025-09-16 10:30:52
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Motives for solar photovoltaic (PV) adoption in urban Nigeria
摘要： Microgeneration technologies like residential solar photovoltaic (PV) systems have been shown to have immense potential for energy security and climate change mitigation. At over 50% private power systems ownership, the majority of urban Nigerian households rely on conventional self-generation utilising expensive petrol and diesel-powered generators. Despite the high upfront costs of a sizeable PV module, some households are choosing such sustainable alternative power. This paper investigates the motives for PV adoption in urban Nigeria following innovation diffusion and adoption theories. Using interviews, PV adopter data were collected on key drivers for uptake and results analysed. Field survey analysis established the key motives for uptake as power outages, energy cost-savings, including generator use fuel fraud, awareness and access to finance while key barriers include high capital costs and lack of finance. The results point to the need for regulatory and political intervention. Effective PV awareness creation campaigns and promotional strategies would also be necessary in the changing face of electricity supply in Nigeria.
关键词： energy security,PV adoption,urban Nigeria,climate change mitigation,solar photovoltaic
更新于2025-09-16 10:30:52
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Cooperative Management for PV/ESS-Enabled Electric-Vehicle Charging Stations: A Multi-Agent Deep Reinforcement Learning Approach
摘要： This paper proposes a novel multi-agent deep reinforcement learning method for the energy management of distributed electric vehicle charging stations with a solar photovoltaic system and energy storage system. In the literature, the conventional method is to calculate the optimal electric vehicle charging schedule in a centralized manner. However, in general, the centralized approach is not realistic under certain environments where the system operators for multiple electric vehicle charging stations handle dynamically varying data, such as the status of the energy storage system and electric vehicle-related information. Therefore, this paper proposes a method that can compute the scheduling solutions of multiple electric vehicle charging stations in a distributed manner while handling run-time time-varying dynamic data. As shown in the data-intensive performance evaluation, it can be observed that the proposed method achieves a desirable performance in terms of reducing the operation costs of electric vehicle charging stations.
关键词： solar photovoltaic system,energy management,electric vehicle charging stations,multi-agent deep reinforcement learning,energy storage system
更新于2025-09-16 10:30:52
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Photovoltaic panel integrated with phase change materials (PV-PCM): technology overview and materials selection
摘要： In recent years, the utilization of phase change materials (PCMs) in photovoltaic (PV) module for thermal regulation has attracted wide attention in this field, as the hybrid PV-PCM technology can not only achieve higher photoelectric conversion efficiency but also make it possible to extract thermal energy stored in PCMs for cascade utilization. Although substantial research has been carried out on PV-PCM systems, the promise of practical application is still far from clear with some barriers unsolved, such as PCMs which need further improvements in both technical and economical view. In this paper, a comprehensive literature review of the state-of-the-art aspects of PV-PCM systems is presented, with the focus on technology overview and materials selection. The concept of hybrid PV-PCM system is first discussed with its general configuration and energy balance, to figure out the key factors affecting its performance. Besides, the development route of PV-PCM research is outlined through a comprehensive review of 104 research articles during 2004–2018, clarifying the representative achievements and existing problems in each stage. Furthermore, PCMs are highlighted in this paper with details on their classification, properties, and application in previous PV-PCM research. In particular a triangle about materials selection criteria and determination strategy of phase transition temperature is proposed. Finally, the challenges and prospects of future research on PV-PCM systems are raised, advocating that more attention should be addressed on new strategies to overcome the existing problems such as insufficient reliability and economic feasibility.
关键词： Phase change material (PCM),PV cooling,PV-PCM,Solar photovoltaic (PV),Review
更新于2025-09-16 10:30:52
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Experimental study conducted for the identification of best heat absorption and dissipation methodology in solar photovoltaic panel
摘要： The solar PV technology has become a significant alternative for conventional fossil fuel resources. The recent researches are focusing on techniques to increase the efficiency of the solar photovoltaic (PV) systems to address the growing needs of the global electricity demand. Maintaining the PV panel temperature according to the specified standard helps in harnessing the optimal power output consistently. Although there are various PV panel cooling techniques available in the existing literature, there is always a huge expectation among the energy sectors in terms of rising the efficiency value, as well as lowering the cost of investment. In this aspect, the proposed method provides the best solution by improving the efficiency of the solar photovoltaic panel by regulating the temperature using a material called as the Phase Change Material which is entrenched with an external finned heat sink to improve the thermal conductivity of the material PCM. In this work, the concept is investigated by an experimental setup under direct sun rays in the natural environmental conditions for four different cases (Case A, Case B, Case C, and Case D). The concept of temperature regulation is recorded through FLIR thermal imaging camera and the observations are presented. After thorough experimental investigations of all the four cases, it is found that PCM entrenched with heatsink (Case D) can certainly be an efficient approach to drop the operating temperature of the PV panel with lowest cost and enhance the efficiency of the PV panel to the maximum extent.
关键词： Phase change material,Solar photovoltaic (PV) panel,Heat sink,FLIR thermal images
更新于2025-09-16 10:30:52
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Planning of Hybrid Micro-Hydro and Solar Photovoltaic Systems for Rural Areas of Central Java, Indonesia
摘要： This paper proposes the planning of hybrid micro-hydro and solar photovoltaic system for rural areas of Central Java, Indonesia. The Indonesian government has paid great attention to the development of renewable energy sources, especially solar and hydropower. One area that has a high potential for both types of energy is the province of Central Java, located on the island of Java, Indonesia. In this research, we conduct field research to determine the ideal capacity of solar and micro-hydro hybrid power plants, electricity load analysis, and optimal design of hybrid power plants. Data on the potential of micro-hydro plants are obtained by direct measurement on the Ancol Bligo irrigation channel located in Bligo village, Ngluwar district, Magelang regency, Central Java province, Indonesia. Data on solar power potential were obtained from NASA’s database for solar radiation in the Central Java region. Hydropower potential data include channel length, debit, heads, and power potential in irrigation channels originating from rivers. These data are used to design an optimal hybrid power plant. The method used to obtain the optimal design of a hybrid power plant system is based on the analysis of capital costs, grid sales, cost of energy, and net present cost. Based on the parameters of the analysis, the composition of the optimal generator for the on-grid scheme to the distribution network can be determined. The results showed that hybrid power plants were able to meet the needs of electrical energy in the villages around the power plant and that the excess energy could be sold to national electricity providers.
关键词： hybrid micro-hydro,Indonesia,rural areas,solar photovoltaic,Central Java
更新于2025-09-16 10:30:52
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Community energy business model evolution: A review of solar photovoltaic developments in England
摘要： The ongoing energy system transformation process is placing citizens and communities at the heart of future energy systems. To date, their participation has focused on the ownership and control of renewable energy installations facilitated by supportive national policies. Yet across many European countries, policies that have previously supported the deployment of small-scale renewable projects are being withdrawn. Social innovation and the evolution of business models are needed if citizen participation is to continue and succeed in this new policy landscape. At the same time, few business models stand still. This paper reviews the evolution of community energy business models in England to provide insights into the potential of community participation in the energy system post subsidies. Concentrating on community solar photovoltaic projects as the cornerstone technology, this review identifies and critique three archetypal business models as sequentially dominating English community renewable energy to date. Using insights from both Science and Technology Studies and Transaction Cost Economics, it explores the drivers and origin of these models as well as resulting community benefits. Looking forwards and by reviewing current activity, this paper identifies new intermediary actors as playing a key role in facilitating and brokering new, increasingly complicated and commercial community energy business models. We argue that this marks a significant break from the past and may, in time, offer more opportunities for community participation in energy system transformation. Moreover, it offers some communities the possibility of staying small and retaining their more radical potential.
关键词： Solar photovoltaic,Power purchase agreements,Intermediaries,Transaction costs,Community energy,Business models
更新于2025-09-16 10:30:52
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Design and Sizing of Mobile Solar Photovoltaic Power Plant to Support Rapid Charging for Electric Vehicles
摘要： Existing DC fast-charging stations are experiencing power quality issues such as high harmonics in the line current, poor power factor in the input supply, and overloading of distribution transformers, due to the dynamic behavior of charging patterns when it is connected to the power grid. Most of the recent works involve the usage of renewable energy sources to mitigate the issues on the distribution grid. In order to design a mobile plug and play DC fast charging station, solar energy is the best and viable solution to carry out. In this paper, plug and play solar photovoltaic power plant to charge electric vehicles (EVs) is proposed and modelled using MATLAB/Simulink software. The proposed system can act as a mobile power plant. The controller allows the system to charge the battery, whenever there is abundant solar energy. Incoming EVs will be charged directly from the system battery where the charger acts as a rapid charging system. The proposed system can meet the concept of Solar Photovoltaic Rapid Charging Stations (SPRCS), which shows that 80% of charge can be fed to an EV in 10.25 min.
关键词： Solar Photovoltaic Rapid Charging Stations (SPRCS),plug and play DER,mobile power plant,Vehicle to Vehicle power transfer (V2V),Photovoltaic based charging station (PV-EV),PV based charging Station (PVCS)
更新于2025-09-12 10:27:22