scholarly journals Performance Assessment of a High-Powered Boost Converter for Photovoltaic Residential Implementations

2019 ◽  
Vol 25 (6) ◽  
pp. 40-47 ◽  
Author(s):  
Davood Ghaderi ◽  
Gokay Bayrak
Keyword(s):  
Simple Structure ◽  
Boost Converter ◽  
Boost Converters ◽  
Pv Systems ◽  
Pv Panel ◽  
Power Switch ◽  
Duty Cycles ◽  
Dc Gain ◽  
Transformer Design ◽  
Simulation Results

This paper introduces a new boost converter operating in several duty cycles with a high powered and no transformer design for Photovoltaic residential implementations. The proposed converter is performed without any extra power switch by a voltage pre-amplifier unit between the input inductor and the power switch and is derived with a simple structure. The designed converter provides a voltage gain by 38 times for the operation of 90% of the duty cycle. This condition shows that the proposed converter has more efficient compared to the conventional boost converters. Besides, a higher amount of DC gain is possible by adding a cascade blocks connection of switched-capacitor (SC) in the converter’s output. The operational principles are evaluated to justify the utility of converter for residential PV systems in the study. Also, a 200 W powered prototype converter is implemented by applying a commercial PV panel in the laboratory. The experimental results confirm both the mathematical and simulation results.

scholarly journals A Novel High Gain Voltage-Lift Technique Based Transformer free Non-isolated Quadratic Boost Converter

2018 ◽  
Vol 225 ◽  
pp. 04010
Author(s):  
Pydikalva Padmavathi ◽  
Sudhakar Natarajan
Keyword(s):  
Theoretical Analysis ◽  
Simple Structure ◽  
High Gain ◽  
Boost Converter ◽  
Constant Frequency ◽  
Boost Converters ◽  
High Efficient ◽  
Voltage Stress ◽  
Simulation Results ◽  
Lower Voltage

A novel high gain voltage lift technique based transformer free non isolated boost converter is proposed with single switch operating at constant frequency in this paper. This performance of this converter is very good and high efficient compared to the conventional boost converters. The high gain is obtained by applying voltage lift cell to the quadratic boost converter. The simple structure, easy controlling and lower voltage stress. The operating principle with theoretical analysis and simulation results of proposed converter for various loads at 10 kHz frequency are discussed in this paper to compare the performance of this novel boost converter.

scholarly journals Influence of Parasitic Resistances on the Input Resistance of Buck and Boost Converters in Maximum Power Point Tracking (MPPT) Systems

Electronics ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1464
Author(s):  
Marcin Walczak ◽  
Leszek Bychto
Keyword(s):  
Input Resistance ◽  
Load Resistance ◽  
Maximum Power ◽  
Solar Panels ◽  
Maximum Power Point ◽  
Boost Converters ◽  
Pv Systems ◽  
Point Tracking ◽  
Pv Panel ◽  
Power Point

DC/DC converters are widely used in photovoltaic (PV) systems to maximize the power drained from solar panels. As the power generated by a PV panel depends on the temperature and irradiance level, a converter needs to constantly modify its input resistance to remain at the maximum power point (MPP). The input resistance of a converter can be described by a simple equation that includes the converter load resistance and the duty cycle of the switching signal. The equation is sufficient for an ideal converter but can lead to incorrect results for a real converter, which naturally features some parasitic resistances. The goal of this study is to evaluate how the parasitic resistances of a converter influence its input resistance and if they are relevant in terms of MPPT system operation.

Modeling and Simulation of Closed Loop Controlled Parallel Cascaded Buck Boost Converter Inverter Based Solar System

2015 ◽  
Vol 6 (3) ◽  
pp. 648 ◽  
Author(s):  
T. Sundar ◽  
S. Sankar
Keyword(s):  
Solar System ◽  
Modeling And Simulation ◽  
Single Phase ◽  
Closed Loop ◽  
Boost Converter ◽  
Open Loop ◽  
Boost Converters ◽  
Closed Loop Systems ◽  
Simulink Model ◽  
Simulation Results

<p>This Work deals with design, modeling and simulation of parallel cascaded buck boost converter inverter based closed loop controlled solar system. Two buck boost converters are cascaded in parallel to reduce the ripple in DC output. The DC from the solar cell is stepped up using boost converter. The output of the boost converter is converted to 50Hz AC using single phase full bridge inverter. The simulation results of open loop and closed loop systems are compared. This paper has presented a simulink model for closed loop controlled solar system.  Parallel cascaded buck boost converter is proposed for solar system.</p>

TRANSFORMERLESS DC–DC CONVERTERS WITH A VERY HIGH DC LINE-TO-LOAD VOLTAGE RATIO

2004 ◽  
Vol 13 (03) ◽  
pp. 467-475 ◽  
Author(s):  
B. AXELROD ◽  
Y. BERKOVICH ◽  
A. IOINOVICI
Keyword(s):  
Boost Converter ◽  
Switched Capacitor ◽  
The Novel ◽  
Boost Converters ◽  
Voltage Ratio ◽  
High Voltage Gain ◽  
Dc Gain ◽  
Dc Line ◽  
Output Capacitor ◽  
Output Filter

By splitting the output capacitor of a basic boost converter, and combining the resulting capacitors with the main switch in the form of a switched-capacitor circuit, a new step-up structure is realized. Without using a transformer, a high line-to-load DC voltage ratio is obtained. An output filter is added, as usual, in boost converters for getting a free-ripple output. The circuit compares favorably with a quadratic boost converter regarding the count of devices and efficiency, even if it presents a lower DC gain. A DC analysis of the novel converter is presented. Experimental and simulation results confirm the theoretical expectations. By increasing the number of capacitors in the switched-capacitor circuit, higher gains can be obtained. Versatility, high voltage gain and good transient response are the features of the proposed converter.

scholarly journals Intelligent Photovoltaic Maximum Power Point Tracking Controller for Energy Enhancement in Renewable Energy System

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Subiyanto ◽  
Azah Mohamed ◽  
M. A. Hannan
Keyword(s):  
Renewable Energy ◽  
Maximum Power Point Tracking ◽  
Boost Converter ◽  
Maximum Power Point ◽  
Pv Systems ◽  
Point Tracking ◽  
Pv Panel ◽  
Power Point Tracking ◽  
Mppt Controller ◽  
Power Point

Photovoltaic (PV) system is one of the promising renewable energy technologies. Although the energy conversion efficiency of the system is still low, but it has the advantage that the operating cost is free, very low maintenance and pollution-free. Maximum power point tracking (MPPT) is a significant part of PV systems. This paper presents a novel intelligent MPPT controller for PV systems. For the MPPT algorithm, an optimized fuzzy logic controller (FLC) using the Hopfield neural network is proposed. It utilizes an automatically tuned FLC membership function instead of the trial-and-error approach. The MPPT algorithm is implemented in a new variant of coupled inductor soft switching boost converter with high voltage gain to increase the converter output from the PV panel. The applied switching technique, which includes passive and active regenerative snubber circuits, reduces the insulated gate bipolar transistor switching losses. The proposed MPPT algorithm is implemented using the dSPACE DS1104 platform software on a DS1104 board controller. The prototype MPPT controller is tested using an agilent solar array simulator together with a 3 kW real PV panel. Experimental test results show that the proposed boost converter produces higher output voltages and gives better efficiency (90%) than the conventional boost converter with an RCD snubber, which gives 81% efficiency. The prototype MPPT controller is also found to be capable of tracking power from the 3 kW PV array about 2.4 times more than that without using the MPPT controller.

scholarly journals A Novel Power Factor Corrected Converter For Solar Pv Emulator

2019 ◽  
Vol 8 (6) ◽  
pp. 370-374
Keyword(s):  
Single Phase ◽  
Power Source ◽  
Boost Converter ◽  
Solar Pv ◽  
Photovoltaic Modules ◽  
Pv Panel ◽  
Three Phase ◽  
In Series ◽  
Converter Design ◽  
Simulation Results

This Paper Presents A Pfc Converter Design For A Solar Pv Emulator. A Boost Converter Is Proposed As A Pfc Converter. The Photovoltaic Modules Are Connected In Series As An Array. The Pfc Buck-Boost Converter Circuit Provides The Compensated Voltage To The Pv Panel. The Pfc Converter Circuit Has Been Simulated In Simulink/Matlab. The Simulation Results Shows The Single Phase And Three Phase Output Voltages Along With The Pfc Correction.. The Pv Panel Compensates The Voltage Provided By The Power Source After Conversion From Ac To Dc.

scholarly journals An Optimized PV Control System Based on the Emperor Penguin Optimizer

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 751
Author(s):  
Mariam A. Sameh ◽  
Mostafa I. Marei ◽  
M. A. Badr ◽  
Mahmoud A. Attia
Keyword(s):  
Duty Cycle ◽  
Optimization Technique ◽  
Pso Algorithm ◽  
Boost Converter ◽  
Emperor Penguin ◽  
Pv System ◽  
Partial Shading ◽  
Pv Systems ◽  
Point Tracking ◽  
Grid Connected Inverter

During the day, photovoltaic (PV) systems are exposed to different sunlight conditions in addition to partial shading (PS). Accordingly, maximum power point tracking (MPPT) techniques have become essential for PV systems to secure harvesting the maximum possible power from the PV modules. In this paper, optimized control is performed through the application of relatively newly developed optimization algorithms to PV systems under Partial Shading (PS) conditions. The initial value of the duty cycle of the boost converter is optimized for maximizing the amount of power extracted from the PV arrays. The emperor penguin optimizer (EPO) is proposed not only to optimize the initial setting of duty cycle but to tune the gains of controllers used for the boost converter and the grid-connected inverter of the PV system. In addition, the performance of the proposed system based on the EPO algorithm is compared with another newly developed optimization technique based on the cuttlefish algorithm (CFA). Moreover, particle swarm optimization (PSO) algorithm is used as a reference algorithm to compare results with both EPO and CFA. PSO is chosen since it is an old, well-tested, and effective algorithm. For the evaluation of performance of the proposed PV system using the proposed algorithms under different PS conditions, results are recorded and introduced.

scholarly journals Different Techniques to Mitigate Partial Shading in Photovoltaic Panels

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3863
Author(s):  
Tiago Alves ◽  
João Paulo N. Torres ◽  
Ricardo A. Marques Lameirinhas ◽  
Carlos A. F. Fernandes
Keyword(s):  
Cell Model ◽  
Research Work ◽  
Experimental Tests ◽  
Operating Conditions ◽  
Pv System ◽  
Partial Shading ◽  
System Architectures ◽  
Pv Systems ◽  
Advantages And Disadvantages ◽  
Pv Panel

The effect of partial shading in photovoltaic (PV) panels is one of the biggest problems regarding power losses in PV systems. When the irradiance pattern throughout a PV panel is inequal, some cells with the possibility of higher power production will produce less and start to deteriorate. The objective of this research work is to present, test and discuss different techniques to help mitigate partial shading in PV panels, observing and commenting the advantages and disadvantages for different PV technologies under different operating conditions. The motivation is to contribute with research, simulation, and experimental work. Several state-of-the-artsolutions to the problem will be presented: different topologies in the interconnection of the panels; different PV system architectures, and also introducing new solution hypotheses, such as different cell interconnections topologies. Alongside, benefits and limitations will be discussed. To obtain actual results, the simulation work was conducted by creating MATLAB/Simulink models for each different technique tested, all centered around the 1M5P PV cell model. The several techniques tested will also take into account different patterns and sizes of partial shading, different PV panel technologies, different values of source irradiation, and different PV array sizes. The results will be discussed and validated by experimental tests.

scholarly journals Optimal Operation of the Voltage-Doubler Boost Converter through an Evolutionary Algorithm

Mathematics ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 423
Author(s):  
Cesar Ibarra-Nuño ◽  
Alma Rodríguez ◽  
Avelina Alejo-Reyes ◽  
Erik Cuevas ◽  
Juan M. Ramirez ◽  
...  
Keyword(s):  
Evolutionary Algorithm ◽  
Numerical Optimization ◽  
Boost Converter ◽  
Optimal Operation ◽  
Input Current ◽  
Voltage Gain ◽  
Duty Cycles ◽  
Switching Functions ◽  
Voltage Doubler ◽  
Current Ripple

This manuscript presents the numerical optimization (through a mathematical model and an evolutionary algorithm) of the voltage-doubler boost converter, also called the series-capacitor boost converter. The circuit is driven by two transistors, each of them activated according to a switching signal. In the former operation, switching signals have an algebraic dependence from each other. This article proposes a new method to operate the converter. The proposed process reduces the input current ripple without changing any converter model parameter, only the driving signals. In the proposed operation, switching signals of transistors are independent of each other, providing an extra degree of freedom, but on the other hand, this produces an infinite number of possible combinations of duty cycles (the main parameter of switching signals) to achieve the desired voltage gain. In other words, this leads to a problem with infinite possible solutions. The proposed method utilizes an evolutionary algorithm to determine the switching functions and, at the same time, to minimize the input current ripple of the converter. A comparison made between the former and the proposed operation shows that the proposed process achieves a lower input current ripple while achieving the desired voltage gain.

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