scholarly journals A Novel Hybrid MPPT Technique to Maximize Power Harvesting from PV System under Partial and Complex Partial Shading

2022 ◽  
Vol 12 (2) ◽  
pp. 587
Author(s):  
Sajid Sarwar ◽  
Muhammad Yaqoob Javed ◽  
Mujtaba Hussain Jaffery ◽  
Jehangir Arshad ◽  
Ateeq Ur Rehman ◽  
...  
Keyword(s):  
Energy Systems ◽  
Weather Conditions ◽  
Variable Step Size ◽  
Solar Pv ◽  
Time Data ◽  
Step Size ◽  
Pv System ◽  
Partial Shading ◽  
Local Maxima ◽  
Power Point

Photovoltaic (PV) system has been extensively used over the last few years because it is a noise-free, clean, and environmentally friendly source of energy. Maximum Power Point (MPP) from the PV energy systems is a challenging task under modules mismatching and partial shading. Up till now, various MPP tracking algorithms have been used for solar PV energy systems. Classical algorithms are simple, fast, and useful in quick tracing the MPP, but restricted to uniform weather conditions. Moreover, these algorithms do not search the Global Maxima (GM) and get stuck on Local Maxima (LM). However, bio-inspired algorithms help find the GM but their main drawback is that they take more time to track the GM. This paper addresses the issue by using the combination of conventional Incremental Conductance (InC) with variable step size and bio-inspired Dragonfly Optimization (DFO) algorithms leading to a hybrid (InC-DFO) technique under multiple weather conditions, for instance, Uniform Irradiance (UI), Partial Shading (PS), and Complex Partial Shading (CPS). To check the robustness of the proposed algorithm, a comparative analysis is done with six already implemented techniques. The results indicate that the proposed technique is simple, efficient with a quicker power tracking capability. Furthermore, it reduces undesired oscillation around the MPP especially, under PS and CPS conditions. The proposed algorithm has the highest efficiencies of 99.93%, 99.88%, 99.92%, and 99.98% for UI, PS1, PS2, and CPS accordingly among all techniques. It has also reduced the settling time of 0.75 s even in the case of the CPS condition. The performance of the suggested method is also verified using real-time data from the Beijing database.

A Noval Improved Variable Step-Size Incremental Resistance Maximum Power Point Tracking Controller for Photo Voltaic System Under Partial Shading Condition

2019 ◽  
Vol 16 (2) ◽  
pp. 740-744
Author(s):  
R. Geethamani ◽  
C. Pavithra ◽  
B. Niranjana ◽  
V. Gomathy ◽  
P. Chitra
Keyword(s):  
Maximum Power Point Tracking ◽  
Variable Step Size ◽  
Step Size ◽  
Pv System ◽  
Maximum Power Point ◽  
Partial Shading ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Variable Step ◽  
Power Point

A Variable step size Incremental resistance algorithm for PV system was designed for maximum power point tracking. The outputs are generated with help of MATLAB/SIMLUNK. The performance of the PV system for partial shading condition was observed. The output for the system was found to be more efficient and attains stability much faster than any other controller. The power output can be controlled by varying the scaling factor.

scholarly journals A Study of Shading Effect on Photovoltaic Modules with Proposed P&O Checking Algorithm

2017 ◽  
Vol 7 (1) ◽  
pp. 29 ◽  
Author(s):  
Rozana Alik ◽  
Awang Jusoh ◽  
Tole Sutikno
Keyword(s):  
Low Cost ◽  
Maximum Level ◽  
Maximum Power ◽  
Variable Step Size ◽  
Solar Pv ◽  
Step Size ◽  
Pv System ◽  
Solar Module ◽  
Partial Shading ◽  
Current Output

<p>Sun irradiation levels and associated temperature changes are the main factors that influence the conversion of solar energy into electricity. Most energy is produced during a hot sunny day as the sun irradiation is at the maximum level and uniform throughout the solar photovoltaic (PV). However, most solar PV were frequently get shadowed, completely or partially, by the neighbouring buildings, trees and passing clouds. Consequently, the solar PV has lower voltage and current output; hence, multiple maximum power points (MPP) are existed on the PV curve, which could cause confusion to the conventional Maximum Power Point Tracker (MPPT) to track the true MPP for the PV system. Thus, it is important to examine the impacts of partial shading on the solar PV in order to extract the maximum possible power. This paper presents a MATLAB-based modelling for simulation and experimental setup to study the I-V and P-V characteristics of a solar module under a non-uniform irradiation due to partial shading condition (PSC).  Furthermore, this study is also proposed an effective method (a variable step size of P&amp;O with checking algorithm) that is low cost and higher tracking efficiency. Thus, this study is essential in improving and evaluating any new MPPT algorithm under the PSC.</p>

scholarly journals A Real-Time Implementation of Novel and Stable Variable Step Size MPPT

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4668 ◽  
Author(s):  
Maissa Farhat ◽  
Oscar Barambones ◽  
Lassaâd Sbita
Keyword(s):  
Real Time ◽  
Maximum Power ◽  
Variable Step Size ◽  
System Control ◽  
Resistive Load ◽  
Step Size ◽  
Pv System ◽  
Variable Step ◽  
Improved Performance ◽  
Power Point

This paper presents a complete study of a standalone photovoltaic (PV) system including a maximum power tracker (MPPT) driving a DC boost converter to feed a resistive load. Here, a new MPPT approach using a modification on the original perturb and observe (P&O) algorithm is proposed; the improved algorithm is founded on a variable step size (VSZ). This novel algorithm is realized and efficiently implemented in the PV system. The proposed VSZ algorithm is compared both in simulation and in real time to the P&O algorithm. The stability analysis for the VSZ algorithm is performed using Lyapunov’s stability theory. In this paper, a detailed study and explanation of the modified P&O MPPT controller is presented to ensure high PV system performance. The proposed algorithm is practically implemented using a DSP1104 for real-time testing. Significant results are achieved, proving the validity of the proposed PV system control scheme. The obtained results show that the proposed VSZ succeeds at harvesting the maximum power point (MPP), as the amount of harvested power using VSZ is three times greater than the power extracted without the tracking algorithm. The VSZ reveals improved performance compared to the conventional P&O algorithm in term of dynamic response, signal quality and stability.

scholarly journals Power optimization in partially shaded photovoltaic systems

2018 ◽  
Vol 12 (1) ◽  
pp. 34-38
Author(s):  
Halil Erol ◽  
Mahmut Uçman
Keyword(s):  
Climatic Conditions ◽  
Maximum Power ◽  
Hill Climbing ◽  
Solar Pv ◽  
Pv System ◽  
Maximum Power Point ◽  
Partial Shading ◽  
Point Tracking ◽  
Linear Behaviour ◽  
Power Point

The Power-Voltage characteristic of a photovoltaic (PV) array exhibits non-linear behaviour when exposed to uniform solar irradiance. Maximum Power Point (MPP) tracking is challenging due to the varying climatic conditions in a solar PV system. Moreover, the tracking algorithm becomes more complicated due to the presence of multiple peaks in the power voltage characteristics under the condition of partial shading. This research is devoted to the Stochastic Beam Search (SBS) based algorithm and Stochastic Hill Climbing (SHC) for a maximum power point tracking (MPPT) at a partial shading condition in the PV system. To give a partial shading effect over the entire array of a PV system, a mast is placed in front of the modules. The modules in the array are connected in such a way that one does not need to rewire the electrical connection during the rearrangement of modules. It is validated that the power generation performance of an array under a moving shading condition is increased. Furthermore, it is observed that the SHC method outperforms the SBS method in the MMP tracking.

scholarly journals Cost-Saving Opportunities for Taylor’s University Daily Energy Consumption

2021 ◽  
Vol 335 ◽  
pp. 02001
Author(s):  
Shun Seng Chan ◽  
Chockalingam Aravind Vaithilingam ◽  
Gowthamraj Rajendran
Keyword(s):  
Solar Energy ◽  
Cost Saving ◽  
Electricity Consumption ◽  
Weather Conditions ◽  
Solar Pv ◽  
Solar Panels ◽  
Pv System ◽  
Point Tracking ◽  
Daily Energy ◽  
Power Point

Solar energy is a renewable energy abundant throughout the year in a tropical weather country like Malaysia. This paper investigates the viability of using solar PV systems as a cost-saving measure to supply electricity for Taylor’s University (TU) daily energy usage. Experimental values were compared with theoretical values and analyzed in this paper. In this experiment, four photovoltaic (PV) panels connected in parallel were linked to a maximum power point tracking (MPPT) charge controller acting as a voltage regulator. A lead-acid battery was also coupled to the controller that acts as an energy storage to store the harvested solar energy from PV panels and discharge it in electricity. Temperature sensors connected to an Arduino UNO were placed at different locations on the solar panels to monitor for irregularities in the temperature of the panels. The amount of electricity produced was calculated using the data obtained. The results showed that using a larger PV system will generate much more electricity and create a high return on investment (ROI) if the solar panels absorbed sunlight under good weather conditions, thus bringing forward a potential solution to reduce TU’s electricity consumption.

scholarly journals Hardware Testing of New MPPT Method under Various Environmental Conditions

2019 ◽  
Vol 8 (4) ◽  
pp. 12599-12605
Keyword(s):  
Environmental Conditions ◽  
Atmospheric Condition ◽  
Poor Performance ◽  
Maximum Power ◽  
Variable Step Size ◽  
Step Size ◽  
Pv System ◽  
Maximum Power Point ◽  
Dynamic Tracking ◽  
Power Point

There are different MPPT techniques to track the maximum power point. When a PV system is directly connected to the load the operating point seldom lies in the maximum power point, whereas it lies at some other point. Thus the effective utilization of PV cannot be done. But using MPPT techniques the system is always made to operate at peak point irrespective of any changes in atmospheric condition. The Proposed method gives better result in terms of output power and hence efficiency of the converter. This method is a tradeoff between steady state accuracy and dynamic tracking by using variable step size instead of fixed step size as like P and O method. The system gives very poor performance when connected directly without mppt. An experimental analysis was conducted to validate the effectiveness of the proposed MPPT method. The proposed method was compared with the conventional Perturb and Observance method and was found that for every environmental conditions like, change in irradiance, angle of tilt, shading, soiling, colour filter, mounting the proposed method gives better power output and efficiency than P and O method. Hardware testing is done to analyze the method.

scholarly journals Optimized generated power of a solar PV system using an intelligent tracking technique

2021 ◽  
Vol 12 (4) ◽  
pp. 2580
Author(s):  
Afshin Balal ◽  
Mostafa Abedi ◽  
Farzad Shahabi
Keyword(s):  
Output Power ◽  
Solar Pv ◽  
Pv System ◽  
Partial Shading ◽  
Control Approach ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Oscillations ◽  
Solar Pv System ◽  
Power Point

<span lang="EN-US">Partial shading condition (PSC) is common and complicated in all types of PV power plant. Therefore, the power production of solar system would be affected by the mismatch phenomena produced by PSC. Furthermore, when the array is partially shaded, the P–V characteristics become more complex which causes multiple peaks of the P-V curve. So, the simple maximum power point tracking (MPPT) methods such as perturb and observe (P&amp;O) will fail. To address the above issue, this paper proposes a combination of two different approaches, implementing distributed MPPT (DMPPT) and optimized fuzzy/bee algorithm (OFBA). DMPPT can be utilized to maximize solar energy by allowing each module, or group of modules, be managed independently. Also, due to the output power oscillations around the operating point in the P&amp;O method, an OFBA is employed which allowing for the decrease of output power oscillations without the usage of temperature and light sensors. The result shows that utilizing of DMPPT control approach in conjunction with the OFBA boosts the output generated power.</span>

scholarly journals A Recap on Comprehensive Enhancement in Variating Solar Power Extraction under Partial Shaded Condition

2019 ◽  
Vol 8 (12S) ◽  
pp. 927-933
Keyword(s):  
Standard Test ◽  
Solar Pv ◽  
Pv System ◽  
Partial Shading ◽  
Power Extraction ◽  
Pv Systems ◽  
Control Factors ◽  
Course Of Action ◽  
Solar Pv System ◽  
Power Point

This paper presents a thorough audit on various techniques of Photovoltaic (PV) framework under Partial Shading Conditions (PSC) which improves the yield voltage and power. Various productions report on PV with respect to control upgrades and its execution. In any case, perplexity emerges while choosing an approach that performs under every climatic circumstance. In this way, a fundamental audit of PSC systems is considered, which depends on most extreme power point following (MPPT) at Standard Test Conditions (STC). These MPPT strategies can follow the Global Peak (GP) at PSC. Broad research has been investigated in this field and numerous systems have been accounted for. In this paper, a point by point portrayal and order on various procedures of PV at PSC have been made as far as control factors, structure and hardware utilized in down to earth and business applications. Incomplete Shading is a significant test in photovoltaic (PV) frameworks which influences the quality and amount of the output power. The ordinary change of condition and the diminished profitability of PV Array is a significant obstruction in the brisk advancement of the sunlight based power age. A Solar PV system involves PV cluster connected with an Inverter through a dc-dc converter and the yield of the Inverter is associated with the heap. In any case, expansion to PV modules, and exhibit design, control electronic converters are in like manner fundamental parts for a sun oriented based power generation. It is basic to fathom the effect of fractional concealing to make compelling and strong Photovoltaic vitality transformation structure. PV exhibit course of action, converter arrangement and MPPT control strategy are the three basic districts where the vitality extraction from PV bunch can be improved under incomplete concealed condition. A point by point assessment study is coordinated among central and Micro-Inverter based PV systems and particular MPPT control techniques were pondered and considered under fractional concealed condition using MATLAB/Simulink.

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