scholarly journals A Fault Diagnosis Mechanism with Power Generation Improvement for a Photovoltaic Module Array

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 598
Author(s):  
Kuei-Hsiang Chao ◽  
Pei-Lun Lai
Keyword(s):  
Output Power ◽  
Digital Signal Processor ◽  
Maximum Output Power ◽  
Diagnostic Algorithm ◽  
Digital Signal ◽  
Photovoltaic Module ◽  
Maximum Output ◽  
Point Tracking ◽  
Pv Module ◽  
Power Operation

This paper aims to develop an online diagnostic mechanism, doubling as a maximum power point tracking scheme, for a photovoltaic (PV) module array. In case of malfunction or shadow event occurring to a PV module, the presented diagnostic mechanism is enabled, automatically and immediately, to reconfigure a PV module array for maximum output power operation under arbitrary working conditions. Meanwhile, the malfunctioning or shaded PV module can be located instantly by this diagnostic mechanism according to the array configuration, and a PV module replacement process is made more efficient than ever before for the maintenance crew. In this manner, the intended maximum output power operation can be resumed as soon as possible in consideration of a minimum business loss. Using a particle swarm optimization (PSO)-based algorithm, the PV module array is reconfigured by means of switch manipulations between modules, such that a load is supplied with the maximum amount of output power. For compactness, the PSO-based online diagnostic algorithm is implemented herein using a TMS320F2808 digital signal processor (DSP) and is experimentally validated as successful to identify a malfunctioning PV module at the end of this work.

scholarly journals Pengaruh Algoritma Peturb & Observe pada Irradiance, Suhu dan Beban Bervariasi

AVITEC ◽  
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Ernando Rizki Dalimunthe
Keyword(s):  
Output Power ◽  
Maximum Output Power ◽  
Maximum Power ◽  
Maximum Output ◽  
Average Output ◽  
Point Tracking ◽  
Power Simulation ◽  
Power Point Tracking ◽  
Duty Cycles ◽  
Power Point

Optimizing the output power value of a solar cell requires a tracker. The tracking is called the maximum power point tracking (MPPT) which will produce a maximum output power value. Each component in this system is modeled into Simulink. This simulation is designed to optimize the work of solar cells by searching maximum power points using perturb and observe (P & O) algorithms, then duty cycles are output  of the algorithms become Buck-Boost Converter inputs as switching so they can produce output power with better output  power. Simulation results show that MPPT can increase the average output power on changes in the value of sun irradiation, temperature and load than systems that do not use MPPT. The factor of the average difference in power is 37.82%.

Improvement in Power of Shingled Solar Cells for Photo-Voltaic Module

2020 ◽  
Vol 20 (11) ◽  
pp. 7096-7099
Author(s):  
Hongsub Jee ◽  
Jinho Song ◽  
Daehan Moon ◽  
Jaehyeong Lee ◽  
Chaehwan Jeong
Keyword(s):  
Solar Cells ◽  
Output Power ◽  
Current Density ◽  
Power Loss ◽  
Maximum Output Power ◽  
Photovoltaic Module ◽  
Maximum Output ◽  
Conductive Adhesives ◽  
Electrically Conductive ◽  
Electrically Conductive Adhesives

This paper presents a study on the effects of heat treatment conditions on electrically conductive adhesives. Among the advantages of the shingled solar cells include larger active area and smaller current density since one of the main factors of the power loss is due to a decrease in current density. Therefore, when there is a small current, there is a benefit in regards to the power loss. The advantage of this new technique of developing photovoltaic modules is the increase of module power using the same installed area. Electrically conductive adhesives play an important role in the manufacture of shingled solar cells and understanding the effects of its curing condition is necessary to maximize its output power. Through changing the curing time and temperature, the optimized curing conditions for electrically conductive adhesives and fabricated shingled strings for development of a module could be established. Finally, we demonstrated a 500 mm × 500 mm photovoltaic module with a conventional and the other using the shingled method for purposes of comparison and a shingled module showed about 29% increase in maximum output power compared to a conventional module with the same installed area.

Simulation-based Solar PV Module Maximum Output Power and Dust Accumulation Profiles

2021 ◽  
Author(s):  
Kelebaone Tsamaase ◽  
Japhet Sakala ◽  
Edward Rakgati ◽  
Ishmael Zibani ◽  
Edwin Matlotse
Keyword(s):  
Output Power ◽  
Maximum Output Power ◽  
Maximum Output ◽  
Solar Pv ◽  
Pv Module ◽  
Simulation Based ◽  
Dust Accumulation

scholarly journals Joint Operation between a PSO-Based Global MPP Tracker and a PV Module Array Configuration Strategy under Shaded or Malfunctioning Conditions

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 2005 ◽  
Author(s):  
Pi-Yun Chen ◽  
Kuei-Hsiang Chao ◽  
Bo-Jyun Liao
Keyword(s):  
Output Power ◽  
Maximum Output Power ◽  
Maximum Output ◽  
Joint Operation ◽  
Generation Efficiency ◽  
Swarm Optimization ◽  
Array Configuration ◽  
Pv Module ◽  
Shadow Cast ◽  
Abnormal Operation

This paper aims to present a smart, particle swarm optimization (PSO)-based, real time configuration strategy for a photovoltaic (PV) module array in the event of shadow cast on a PV module(s) and/or module failure as an effective approach to power generation efficiency elevation. At the first step, the respective maximum output power levels provided by a normal operating array at various levels of irradiation and module surface temperatures are measured and entered as references into a database. Subsequently, the maximum output power (MPP) level, tracked by a MPP tracker, is feedbacked for a comparison with an aforementioned reference as a way to tell whether there is either a shadow or a malfunction event on a PV module(s). Once an abnormal operation is detected, the presented smart configuration algorithm is performed to reconfigure the PV module array such that the array is operated at the global MPP as intended. Furthermore, by use of a PIC microcontroller that is a family of microcontrollers made by Microchip Technology for compact implementation, this study is experimentally validated as an effective approach to locating the global MPP at all events.

scholarly journals Modeling and simulation of solar PV module for comparison of two MPPT algorithms (P&O & INC) in MATLAB/Simulink

2020 ◽  
Vol 18 (2) ◽  
pp. 666
Author(s):  
Hayder Moayad Abd Alhussain ◽  
Naseer Yasin
Keyword(s):  
Maximum Output Power ◽  
Maximum Power ◽  
Maximum Output ◽  
Atmospheric Conditions ◽  
Solar Pv ◽  
Maximum Power Point ◽  
Matlab Simulink ◽  
Point Tracking ◽  
Pv Module ◽  
Power Point

<p>This paper introduces a procedure for the modelling of a Photo<em>ــ</em>Voltaic (PV) cell and the application of maximum power point tracking (MPPT) in step-by-step with MATLAB/Simulink. The model of one diode is used to explore the characteristics of I<em>ــ</em>V and P<em>ــ</em>V curves of 60W PV module. Due to the non-linear and time varying of PV characteristics, the generated power of the PV is continually varying with atmospheric conditions like temperature and irradiation, the MPPT technology is very important to chase maximum power point (MPP) on the P<em>ــ</em>V curve to obtain maximum output power from PV array. This study focuses on two common types algorithms of MPPT, namely perturb and observe (P&amp;O) and incremental conductance (INC). A DC--DC boost converter is implemented to regulate the voltage output from the PV array's and for the application of MPPT algorithm.</p>

Photovoltaic Maximum Power Point Varying with Illumination and Temperature

2005 ◽  
Vol 128 (1) ◽  
pp. 34-39 ◽  
Author(s):  
E. Radziemska ◽  
E. Klugmann
Keyword(s):  
Temperature Increase ◽  
Maximum Output Power ◽  
Maximum Power ◽  
Photovoltaic Module ◽  
Practical Implementation ◽  
Maximum Output ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Current Voltage Curve ◽  
Power Point

This paper presents the experimental results and discusses the track of the maximum power point on the current-voltage curve of a PV module due to changes of the illumination level and temperature. A time decrease of the voltage and simultaneous temperature increase during the initial stage of irradiation has been observed. Some practical implementation aspects of a maximum power point tracking unit, which match the current and voltage characteristics of the load to the PV module’s maximum power point automatically, are also discussed. A linear decrease of the maximum output power Pm with temperature increase has been observed and the temperature coefficient was derivate. Temperature coefficients for Voc, Isc, Vmpp, Impp, and ηPV have been determined for the photovoltaic module. Also the radiation-rate coefficient at constant temperature has been calculated.

scholarly journals One-Step Preparation of Biochar Electrodes and Their Applications in Sediment Microbial Electrochemical Systems

Catalysts ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 508
Author(s):  
Kui You ◽  
Zihan Zhou ◽  
Chao Gao ◽  
Qiao Yang
Keyword(s):  
Output Power ◽  
Electrode Materials ◽  
Maximum Output Power ◽  
Composite Cathode ◽  
Maximum Output ◽  
Electrochemical Systems ◽  
Composite Cathodes ◽  
One Step ◽  
Microbial Electrochemical Systems ◽  
Hot Melt

Biochar is a kind of carbon-rich material formed by pyrolysis of biomass at high temperature in the absence or limitation of oxygen. It has abundant pore structure and a large surface area, which could be considered the beneficial characteristics for electrodes of microbial electrochemical systems. In this study, reed was used as the raw material of biochar and six biochar-based electrode materials were obtained by three methods, including one-step biochar cathodes (BC 800 and BC 700), biochar/polyethylene composite cathodes (BP 5:5 and BP 6:4), and biochar/polyaniline/hot-melt adhesive composite cathode (BPP 5:1:4 and BPP 4:1:5). The basic physical properties and electrochemical properties of the self-made biochar electrode materials were characterized. Selected biochar-based electrode materials were used as the cathode of sediment microbial electrochemical reactors. The reactor with pure biochar electrode (BC 800) achieves a maximum output power density of 9.15 ± 0.02 mW/m2, which increases the output power by nearly 80% compared with carbon felt. When using a biochar/polyaniline/hot-melt adhesive (BPP 5:1:4) composite cathode, the output power was increased by 2.33 times. Under the premise of ensuring the molding of the material, the higher the content of biochar, the better the electrochemical performance of the electrodes. The treatment of reed powder before pyrolysis is an important factor for the molding of biochar. The one-step molding biochar cathode had satisfactory performance in sediment microbial electrochemical systems. By exploring the biochar-based electrode, waste biomass could be reused, which is beneficial for the environment.

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