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[IEEE 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA) - Paris, France (2018.10.14-2018.10.17)] 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA) - Biomass Free Piston Stirling Engine Generator with PV
摘要： Proposed hybrid electric power generation system is constituted from Free Piston Stirling engine generator and solar photovoltaic system. Free Piston Stirling engine electric generator uses biomass, such as wood pellets as the heat source. This system produces maximum output of 1.6kW and 45°C 200L hot water with linear generator. This paper studied the control of output voltage of Free Piston Stirling Engine. ILQ (Inverse Linear Quadratic) control theory is used to keep output active power between 400W and 500W. In long range time constant of burning system and in short range time constant of electrical circuit, experiment yields temperature of FPSEG head between upper limit and lower limit.
关键词： hybrid system,Free Piston Stirling Engine,biomass,solar power,ILQ control
更新于2025-09-23 15:23:52
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Harnessing the synergy between upconverting nanoparticles and lanthanide complexes in a multi-wavelength responsive hybrid system
摘要： We prepared a hybrid system composed of a continuous film of dinuclear lanthanide complex [Ln2bpm(tfaa)6] (Ln = Tb or Eu) and upconverting nanoparticles (UCNPs) using a straightforward drop-cast methodology. The system displayed visible emission under near-infrared (NIR) excitation, simultaneously stemming from sub-10-nm UCNPs and [Ln2] complexes, the latter species being otherwise directly excitable only using UV-blue radiation. In light of the results of steady-state – including power-dependent – and time-resolved optical measurements, we identified the radiative, primarily ligand-mediated nature of the energy transfer from Tm3+ ions in the UCNPs-to-Ln3+ ions in the complexes. Hyperspectral mapping and electron microscopy observations of the surface of the hybrid system confirmed the continuous and concomitant distribution of UCNPs and lanthanide complexes over the extensive composite films. Key features of the hybrid system are the simultaneous UV-blue and NIR light harvesting capabilities and their ease of preparation. These traits render the presented hybrid system a formidable candidate for the development of photoactivated devices capable to operate under multiple excitation wavelength and to transduce the absorbed light into narrow, well-defined spectral regions.
关键词： hybrid system,complex,energy transfer,lanthanide,films,upconverting nanoparticles,hyperspectral imaging
更新于2025-09-23 15:23:52
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[IEEE 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA) - Paris, France (2018.10.14-2018.10.17)] 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA) - Simulation Studies for a Multi-MW Hybrid Wind-Solar PV System for Desalination Plants
摘要： This paper presents a power system configuration and control schemes for a Multi-MW wind-solar hybrid system, which includes multiple wind turbines and solar panels to support a desalination plant. The wind and solar systems are sized such that the desalination plant obtains, as far as possible, its power from the renewable sources, to minimize the dependence on the utility grid. Each section of the wind turbine system includes a variable speed permanent magnet synchronous generator connected to the grid via a back-to-back voltage source converter. The rectifier operates the wind system at the maximum power point, and the inverter provides power to the desalination plant. The solar plant has multiple panels connected to the grid via a three phase converter, performing the dual functions of power transformation and maximum power point tracking. The modeling and validation of this system is performed with the PSCAD/EMTDC, a software typically employed for transient analysis.
关键词： hybrid system,PV system,Wind turbine,rectifier,inverter,desalination plant
更新于2025-09-23 15:22:29
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[Advances in Intelligent Systems and Computing] Applications of Artificial Intelligence Techniques in Engineering Volume 698 (SIGMA 2018, Volume 1) || Predictive Control of Energy Management System for Fuel Cell Assisted Photo Voltaic Hybrid Power System
摘要： Distributed generation systems also known as hybrid power systems which involve renewable energy sources are extensively used due to their ef?ciency and green interface. Considering the varying environmental conditions, these systems are prone to many disadvantages and limitations. In order to overcome these constraints, intelligent techniques which can achieve steady process and power balance are to be implemented. This paper provides an intelligent control using fuzzy inference system and energy management algorithm for Fuel cell assisted PV Battery system. The supervisory control was implemented to achieve utmost feasible ef?- ciency despite varying conditions such as irradiance and Hydrogen levels. With Lev- elized cost being adapted, an ef?cient energy management system attributes for even power distribution throughout the day can be implemented. Our thought process was demonstrated, and ?nal software interface was simulated using MATLAB/Simulink to obtain results which con?rm the effectiveness of the developed system.
关键词： MPPT,Inference systems,Fuzzy logic controller,Energy management,Fuel cell,PVFC hybrid system
更新于2025-09-23 15:21:01
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Strong Exciton-Plasmon Coupling and Hybridization of Organic-Inorganic Exciton-Polaritons in Plasmonic Nanocavity <sup>*</sup>
摘要： We investigate strong exciton-plasmon coupling and plasmon-mediated hybridization between the Frenkel (F) and Wannier–Mott (WM) excitons of an organic-inorganic hybrid system consisting of a silver ring separated from a monolayer WS2 by J-aggregates. The extinction spectra of the hybrid system calculated by employing the coupled oscillator model are consistent with the results simulated by the finite-difference time-domain method. The calculation results show that strong couplings among F excitons, WM excitons, and localized surface plasmon resonances (LSPRs) lead to the appearance of three plexciton branches in the extinction spectra. The weighting efficiencies of the F exciton, WM exciton and LSPR modes in three plexciton branches are used to analyze the exciton-polaritons in the system. Furthermore, the strong coupling between two different excitons and LSPRs is manipulated by tuning F or WM exciton resonances.
关键词： coupled oscillator model,finite-difference time-domain method,localized surface plasmon resonances,plasmonic nanocavity,exciton-plasmon coupling,Frenkel excitons,organic-inorganic hybrid system,Wannier–Mott excitons
更新于2025-09-23 15:21:01
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Performance investigation of grid integrated photovoltaic/wind energy systems using ANFIS based hybrid MPPT controller
摘要： The solar energy and wind energy are two natural, renewable energy resources for the mankind, for the energy supply without hassles that provided an avenue for its utilization. For the efficient of the resources, wind power generation is one of the options in association with a photovoltaic system for preserving solar energy. Hence the current system requires technology to be involved to control the operation to satisfy the major concern as initially a combinational hybrid system to keep track maximum power, DC voltage input and trade-off between renewable energy delivered for interconnections. The fluctuation in power for interconnection can be minimized by adaptive neuro fuzzy interference method (ANFIS) dependent maximum power point tracking (MPPT) system and microscopically trusted ANFIS based system. In this paper the hybrid MPPT controllers are compared that is with perturb-observe (P&O) and tip speed ratio (TSR) as one set of MPPT controller and another side incremental conductance method (ICM) and hill climb search (HCS) both the controllers are tested with the ANFIS. The proposed system to satisfy the defined objectives is modeled using MATLAB/SIMULINK software by connecting power grid system to inverter influenced by ANFIS controller.
关键词： PV system,PMSG,Hybrid system,MPPT,Voltage source inverter (VSI)
更新于2025-09-23 15:19:57
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Control methodology and implementation of a Z-source inverter for a stand-alone photovoltaic-diesel generator-energy storage system microgrid
摘要： This paper deals with the control and implementation of a bidirectional Z-source inverter for a photovoltaic-diesel generator-energy storage hybrid system. The proposed control strategy is based on the voltage regulation across one of the Z-network capacitor (Vcz), through a buck-boost converter of the storage system side. In some critical situations, where the load power is important, the Vcz voltage regulation is no longer able to ensure the duration of the necessary state shoot-through for the maximum power point tracking achievement. In this context, the diesel generator can therefore be solicited to ensure the shoot-through duration and achieve maximum power point tracking so that it can be used more advantageously without any harmful e?ects on the Z-source inverter operation. The e?ectiveness of the proposed control strategy is evaluated and validated by extensive simulations and experiments.
关键词： Energy maximum power point tracking (MPPT),Hybrid system,Microgrid,Photovoltaic generator,Z-source inverter,Diesel generator,Energy storage system
更新于2025-09-23 15:19:57
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Electromagnetically induced grating in semiconductor quantum dot and metal nanoparticle hybrid system by considering nonlocality effects
摘要： The optical polarization from a hybrid system including a closely spaced spherical SQD (modeled as a three-level V-type system) and a metal nanoparticle which are considered classically and are connected by the dipole–dipole interaction mechanism is investigated. The interaction between the SQD and the MNP shows an interesting optical response. In the weak probe field regime and MNP nonlocality correction, the absorption spectrum of the hybrid system exhibits an EIT window with two absorption peaks and the plasmon-assisted quantum interference plays an important role in the position and amplitude of these peaks, which are intensely altered by including the nonlocal effects. The probe diffraction grating is created based on the excitons-induced transparency by applying a standing-wave coupling field. The results of this study are useful in numerous areas of all-optical communications.
关键词： Metal nanoparticles (MNP),Hybrid system,Electromagnetically induced grating (EIG),Nonlocality,Semiconductor quantum dot (SQD)
更新于2025-09-23 15:19:57
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Experimental and theoretical analysis of hybrid concentrated photovoltaic/thermal system using parabolic trough collector
摘要： In the current work, a hybrid concentrated photovoltaic thermal system was designed and coupled with a parabolic trough collector and investigated theoretically and experimentally for combined heat and power output. In the design, a photovoltaic module was mounted on a flat surface of parabolic trough absorber tube having semi cylindrical shape. A provision was made to cool photovoltaic panel from both the surfaces by flowing water through the absorber tube as well as the annulus of between absorber tube and glass cover. The model was developed using first law of the thermodynamics and then validated using experimental data generated through the fabricated setup. During the experimentation, the annulus flow rate was varied from 0.008 kg/s, 0.017 kg/s and 0.025 kg/s and inner flow rate was varied from 0.075 kg/s, 0.083 kg/s and 0.091 kg/s. The field testing results showed the mean overall efficiency of system obtained as 61.42%, 64.61% and 66.36% for inner tube flow rate of 0.075 kg/s, 0.083 kg/s and 0.091 kg/s respectively for annulus flow rate of 0.008 kg/s. The theoretical results of hybrid system obtained from the simulation are in good agreement with the experimental data. In the end environmental cost analysis was also carried out for the proposed system.
关键词： Hybrid system,Concentrated Photovoltaic/thermal,Parabolic trough collector,Renewable energy,Solar energy
更新于2025-09-23 15:19:57
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Performance of Solar Absorption-Subcooled Compression Hybrid Cooling System for Different Flow Rates of Hot Water
摘要： The solar absorption-subcooled compression hybrid cooling system (SASCHCS) is tech-economically feasible for high-rise buildings. Since such a system operates with no auxiliary heat source, the performance coupling of its absorption subsystem and solar collectors is sensitive to the variation of hot water ?ow rate. In this regard, the relationship of system performance and hot water ?ow rate is required to be clari?ed exactly. Therefore, this paper aims to illustrate the e?ect mechanism of hot water ?ow rate and to propose the corresponding decision criterion. The case study is based on a typical high-rise o?ce building in subtropical Guangzhou. The daily working process of this system with di?erent hot water ?ow rates is simulated and analyzed. Subsequently, the useful heat of collectors and cooling capacity of the absorption subsystem with the hot water ?ow rate is discussed in detail. The results show that the SASCHCS operates with hot water temperatures ranging from 60 C to 90 C. The energy saving increases with the rise of hot water ?ow rate, but such variation tends to be ?at for the excessively high ?ow rate. As the collector ?ow rate increases from 1 m3/h to 10 m3/h, the daily energy saving improves by 21% in August. Similarly, the daily energy saving increases by 37.5% as generator hot water ?ow rate increases from 1 m3/h to 10 m3/h. In addition, the collector ?ow rate of 3.6 m3/h (13.33 (kg/m2 h)) and the generator ?ow rate of 5.2 m3/h (19.26 (kg/m2 h)) are optimal for the annual operation, with considering power consumption of water pumps. This paper is helpful for the improvement of SASCHCS operating performance.
关键词： solar cooling,subcooled compression,hot water ?ow rate,absorption chiller,hybrid system
更新于2025-09-23 15:19:57