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A MPPT Method based on Improved Fibonacci Search Photovoltaic Array
摘要： The P-U curve of photovoltaic arrays (PVAs) has multi-peak characteristics under uneven illumination environments, and the maximum power point tracking (MPPT) strategy for the single peak may fail. An improved Fibonacci search algorithm is proposed to carry out MPPT of photovoltaic arrays under uniform illumination or light mutation. A multiple-interval search algorithm based on a circuit analysis method is presented for different topology arrays and illumination distributions. The series array analysis adopts the current analysis method, the parallel array analysis adopts the voltage analysis method, and the series and parallel array analysis adopts the current and voltage analysis method; then, the output control volume is determined, and the search interval is divided. The search steps in the Fibonacci method and the real-time changes of parameters in the optimization process can be observed by MATLAB simulation. Experimental results show that the algorithm uses less computation time and small area search instead of global search.
关键词： Fibonacci search,MATLAB simulation,photovoltaic array,circuit analysis method,maximum power point tracking
更新于2025-09-16 10:30:52
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A new educational software package for photovoltaic system feasibility: PVGUI
摘要： With the increase in the market share of renewable energy sources, the feasibility analysis of the renewable energy-based power systems has also gained importance. In this study, a MATLAB-based interface for the feasibility analysis of photovoltaic systems is proposed in order to be used in educational purposes. The interface has been presented to the students of Yildiz Technical University as an educational material, and positive feedback has been received from the majority of the students.
关键词： MATLAB/GUI,Photovoltaic system,feasibility analysis
更新于2025-09-16 10:30:52
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[IEEE 2019 International Conference on Power Generation Systems and Renewable Energy Technologies (PGSRET) - Istanbul, Turkey (2019.8.26-2019.8.27)] 2019 International Conference on Power Generation Systems and Renewable Energy Technologies (PGSRET) - Modeling Photovoltaic String in PLECS Under Partial Shading
摘要： The industry of solar energy and its application areas have developed and received much attention over the last two decades. Therefore, the types of photovoltaic (PV) system simulations are investigated and mostly discussed models close to the physical behaviour of a PV panel or system. Under the real conditions such as cloud coverage, the shadows of nearby objects, dusty air, and dirty surface area, etc. result in partial shading issue, which is the core problem of predicting how the system behaves electrically. This paper describes the electrical behaviour model of an established PV string consisting of an experimental curve of CHN250-60P panel shown in the datasheet. The simulation model is performed through the instrumentality of Piecewise Linear Electrical Simulation (PLECS) Block-set in MATLAB/Simulink platform. With the proposed model, the I-V and P-V curves of the system can be represented according to the values of a 3D Lookup Table (LUT). Consequently, the simulation results are dealt with partial shading issue to verify a correct model in different solar irradiance and temperature.
关键词： modeling,Photovoltaic systems,PLECS?,MATLAB,partial shading
更新于2025-09-12 10:27:22
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[IEEE 2019 International Conference on Intelligent Sustainable Systems (ICISS) - Palladam, Tamilnadu, India (2019.2.21-2019.2.22)] 2019 International Conference on Intelligent Sustainable Systems (ICISS) - Modeling and Simulation of Multi-junction TANDEM Solar Cell
摘要： This paper manages with the modelling of quadruple junction solar cell (qjsc) constructed by using the semiconductor material of AlGaInP-GaAs-GaInAs-Ge at a particular value solar irradiance, temperature. Comparison of output I-V and P-V curve of quadruple junction solar cell is done with triple junction solar cell made up of InGaP-InGaAs-Ge semiconductor material and also single junction solar cell (sjsc) made of a Ge semiconductor by using MATLAB/SIMULINK. It has been found higher value of output voltage and power in quadruple junction solar cell as compared to single, dual or triple junction solar cell. The above described quadruple junction solar cell is made by using the material having a same lattice structure which helps to ease the flow of current in all the four junctions and analysis is done at solar irradiance (1000-800-500) W/cm2. The whole analysis is done through pessimistic approach on the basis of the single exponential model.
关键词： MATLAB Simulink,multi-junction solar cell,quadruple
更新于2025-09-12 10:27:22
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Optimization of Laser Therapy Parameters in Dependence of Spot Size
摘要： Recently, the laser therapy for a treatment of the skin lesions of the vascular origin has gained a substantial development, and progress in the technical area. The vascular lasers, particularly the CANDELA Vbeam Perfecta, which is a part of this research has been equipped by a system of the dynamical cooling, called DCD leading to a higher patient’s comfort during the examination. In the most of the vascular lasers, it was allowed for settings of the pulse length up to 40 ms. By this way, the hematomas are reduced after the treatment, and mostly the skin is only getting red. For a reason of a complexity of the CANDELA Vbeam Perfecta settings, on a demand of the physicians, the user environment has been developed serving for an automatic parameters calculation of the laser therapy, and possibilities of alternative settings for same laser energy. The software environment has been designed in the MATLAB. The SW has been tested in the clinical conditions of the University Hospital of Ostrava.
关键词： SW environment,CANDELA Vbeam Perfecta,skin lesions,MATLAB,Laser
更新于2025-09-12 10:27:22
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Development of a simulation tool for predicting energy consumption of selective laser melting by using MATLAB/Simulink
摘要： Additive manufacturing (AM) is the umbrella term for manufacturing processes that apply materials layer by layer to create 3D-parts. This technology implies many revolutionary benefits. Selective laser melting (SLM) is one promising metal AM technology which uses a laser beam to melt material on the selective area of a powder bed for creating parts. In order to ensure the sustainable value of SLM, the energy consumption for manufacturing parts with SLM should be analyzed in the design phase. Addressing this issue, this paper introduces the development of a simulation tool for energy consumption prediction with SLM by using MATLAB?/Simulink?. The development approach includes 5 phases: data acquisition, definition of system parameters, modeling using bond graphs, creation of Simulink? models, and creation of data structure and GUI. The result of this work shows that the simulation tool is a useful tool for analyzing and evaluating the energy consumption of SLM in the design phase.
关键词： additive manufacturing,MATLAB/Simulink,energy simulation,selective laser melting
更新于2025-09-12 10:27:22
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[IEEE 2019 International Conference on Green and Human Information Technology (ICGHIT) - Kuala Lumpur, Malaysia (2019.1.15-2019.1.17)] 2019 International Conference on Green and Human Information Technology (ICGHIT) - Development of Python-MATLAB Interface Program for Optical Communication System Simulation
摘要： This paper reports on the results of a developing Python-MATLAB interface program to implement optical wireless communication system simulation. We implement Python interface for entering input values and simulation environment variables for MATLAB. We operate MATLAB to numerical computing process about communication system simulation to generate a signal, to approximate channel characteristics and to recover the signal. Python passes input data and environment variables to MATLAB and displays output data and graphs from the simulation after MATLAB numerical computing.
关键词： Simulation,MATLAB,optical communication,Python
更新于2025-09-12 10:27:22
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[IEEE 2018 International Conference on Circuits and Systems in Digital Enterprise Technology (ICCSDET) - Kottayam, India (2018.12.21-2018.12.22)] 2018 International Conference on Circuits and Systems in Digital Enterprise Technology (ICCSDET) - Performance Analysis of Solar Photovoltaic System with Fuzzy Based Variable Step Size MPPT Algorithm Using Matlab /Simulink
摘要： In the recent decades, Photovoltaic (PV) power generation has become one of the primary power source due to the advantages such as less maintenance and environmental benefits. Moreover, the generation source is ultimately free and abundant. However, the major barriers related to PV power generation are low power conversion efficiency, high cost of PV modules and nonlinearity in output power. Because of low power conversion efficiency, PV systems should work always at its Maximum Power Point (MPP). A power conditioning unit with Maximum Power Point Tracking (MPPT) technique is employed in the PV systems to harvest maximum power. The main function of MPPT is to detect the MPP for the given conditions and operate the system at that point. In this paper Fuzzy Logic Controller (FLC) based variable step size MPPT for a standalone solar PV system is presented. Solar PV system with Fuzzy based MPPT controller in Matlab /Simulink. The performance of proposed variable step size fuzzy MPPT algorithm is studied for different input conditions and analyzed in terms of performance parameters such as tracking speed, steady state oscillations, response under variations in irradiance and temparature, average output power and output power ripple. The results are compared with Variable Step Size Incremental Conductance (VSS InC) MPPT algorithm and conventional InC based PV system.
关键词： Solar Photovoltaic (SPV),Fuzzy Logic Control (FLC),MATLAB/Simulink,Simulation,Variable Step Size Incremental Conductance (VSS InC),Maximum Power Point Tracking (MPPT)
更新于2025-09-11 14:15:04
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Proof of concept for a novel and smart shade resilient photovoltaic module
摘要： In this study, the performance of a shade resilient smart module is studied under a dynamic shading pattern. A smart module architecture is developed to mitigate the non-linear shading effect on the module performance. Partial shading decreases the output current of the shaded cells and affects the unshaded cells’ output power. After distributing the module cells into small groups, based on a least square support vector machine optimisation method, DC–DC buck converters compensate the decreased current levels, by adjusting the output current and voltage level from any individual group of cells. The system is simulated in the MATLAB Simulink environment, and the output results are presented. Results show that the module performs efficiently and output power of the unshaded groups of cells never decreased because of the effect of shading on the other groups. Additionally, the maximum output power is harvested from all groups simultaneously. Prototype hardware is designed and built to implement the proof of concept. The real-time results of hardware testing show that the smart module performs as expected and mitigates partially shaded conditions by extracting maximum power from each group, regardless of other groups shading condition.
关键词： least square support vector machine,dynamic shading pattern,MATLAB Simulink,shade resilient photovoltaic module,DC–DC buck converters
更新于2025-09-11 14:15:04
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[IEEE 2018 International Ural Conference on Green Energy (UralCon) - Chelyabinsk, Russia (2018.10.4-2018.10.6)] 2018 International Ural Conference on Green Energy (UralCon) - Simulation Model of Autonomous Solar Power Plant with Dual-Axis Solar Tracker
摘要： The article provides a description of a simulation model of a solar power station with an automated dual-axis solar tracker, which was developed using MATLAB/Simulink. The presented development includes a random weather generator (intensity of solar radiation), automated load redundancy, and also simultaneous use of two types of solar cells such as monocrystalline and polycrystalline. This paper presents the results of modeling, which prove the effectiveness of the application of solar modules with a dual-axis solar tracker in comparison with statically located modules. In addition, on the basis of the conducted analysis of the modeling solar power station work in MATLAB/Simulink optimum operating conditions of a photovoltaic plant have been identified. The developed model will allow for researching the characteristics of a solar power plant and predicting the amount of energy generated by solar panels in a specific place.
关键词： designing a solar tracking-system,modeling dual-axis solar tracker,simulation model of solar power plant,simulation of solar PV model in MATLAB
更新于2025-09-11 14:15:04