scholarly journals Design and Implementation of Three-Level DC-DC Converter with Golden Section Search Based MPPT for the Photovoltaic Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Chouki Balakishan ◽  
N. Sandeep ◽  
M. V. Aware
Keyword(s):  
High Voltage ◽  
High Performance ◽  
High Efficiency ◽  
Low Cost ◽  
Golden Section ◽  
Boost Converter ◽  
Pv System ◽  
Point Tracking ◽  
Golden Section Search ◽  
Energy Conversion Systems

In many photovoltaic (PV) energy conversion systems, nonisolated DC-DC converters with high voltage gain are desired. The PV exhibits a nonlinear power characteristic which greatly depends on the environmental conditions. Hence in order to draw maximum available power various algorithms are used with PV voltage/current or both as an input for the maximum power point tracking (MPPT) controller. In this paper, golden section search (GSS) based MPPT control and its application with three-level DC-DC boost converter for MPPT are demonstrated. The three-level boost converter provides the high voltage transfer which enables the high power PV system to work with low size inductors with high efficiency. The balancing of the voltage across the two capacitors of the converter and MPPT is achieved using a simple duty cycle based voltage controller. Detailed simulation of three-level DC-DC converter topology with GSS algorithm is carried out in MATLAB/SIMULINK platform. The validation of the proposed system is done by the experiments carried out on hardware prototype of 100 W converter with low cost AT’mega328 controller as a core controller. From the results, the proposed system suits as one of the solutions for PV based generation system and the experimental results show high performance, such as a conversion efficiency of 94%.

Design of 500W Safety Photovoltaic Off-Grid Inverter for Family

2014 ◽  
Vol 651-653 ◽  
pp. 1019-1023
Author(s):  
You Huan Wang ◽  
Ning Liu ◽  
Dong Wei Xia
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Low Cost ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Pv Inverter ◽  
Power Point Tracking ◽  
Converter Topology ◽  
Power Point ◽  
Digital Processor

In order to address and meet the needs of people in these regions without electricity, we designed a small 500W off-grid PV-inverter. The main circuit includes battery charge and discharge circuit, and two-stage converter topology isolated. The digital processor TMS320F28023, high-performance and low-cost, is used to achieve maximum power point tracking (MPPT) of PV modules and charge control for battery. The experimental results of the prototype show that this design with high-precision and high-efficiency, meets the design requirements.

scholarly journals A high performance grid connected PV system based on HERIC transformerless inverter

2020 ◽  
Vol 20 (2) ◽  
pp. 602
Author(s):  
Essam Hendawi
Keyword(s):  
Leakage Current ◽  
High Performance ◽  
High Efficiency ◽  
Boost Converter ◽  
Pv System ◽  
Maximum Power Point ◽  
Safe Limits ◽  
Sinusoidal Shape ◽  
Power Point ◽  
Extraction Power

<p>This paper presents an effective single phase grid connected photovoltaic PV system based on High Efficiency and Reliable Inverter Concept HERIC transformerless inverter.  dc-dc boost converter controlled by incremental conductance IC maximum power point tracker MPPT is employed to achieve the maximum extraction power of the PV panels.  Proportional integral PI controller controls the output voltage of the boost converter to meet the utility grid requirements.  LCL filter is utilized to keep the inverter voltage very close to sinusoidal shape.   Employing the HERIC transformerless inverter reduces significantly the ground leakage current beyond safe limits.  Semiconductors losses are studied to investigate the efficiency of the proposed system at different insolation levels.  Simulation results verify the high performance of the proposed system when considering leakage current and system efficiency.</p>

Fuel Cell Emulator with MPPT Technique and Boost Converter

2017 ◽  
Vol 8 (4) ◽  
pp. 1852 ◽  
Author(s):  
Maaspaliza Azri ◽  
Nur Hidayah Abu Khanipah ◽  
Zulkifilie Ibrahim ◽  
Nasrudin Abd. Rahim
Keyword(s):  
Fuel Cell ◽  
High Efficiency ◽  
Cell Model ◽  
Low Cost ◽  
Boost Converter ◽  
Cell System ◽  
Maximum Power ◽  
Constant Voltage ◽  
Point Tracking ◽  
High Efficient

<span lang="EN-GB">This paper presents the simulation between fuel cell model and interleaved DC-DC boost converter (IBC) using a constant voltage maximum power point tracking (MPPT) technique. The main advantage of this method is it had the simplest algorithm and can be computed for the high efficiency IBC. The MPPT technique forces the fuel cell to meet the maximum power that the fuel cell can generate. To test the IBC along with the MPPT algorithm, MATLAB/Simulink simulation is carried out. This MPPT method increases the efficiency of power delivered from the fuel cell. The IBC has also chosen for its advantages of reduction of passive component's size, as well as reduced the current ripple that could affect the fuel cell stack. It is envisaged that the MPPT method of constant voltage gives a handful of help in designing a low cost and high efficient fuel cell system along with the interleaved boost converter chosen</span>

scholarly journals Research and proposal the configuration of the booster circuit in the grid connected solar cell system and MPPT simulation in the partially shaded conditions

2021 ◽  
Vol 62 (4) ◽  
pp. 79-90
Author(s):  
Minh Duc Nguyen ◽  
Anh Viet Truong ◽  
Phi Hoang Le ◽  
Lan Thuy Thi Vu ◽  
Y Nhu Do ◽  
...  
Keyword(s):  
High Efficiency ◽  
Low Cost ◽  
Cell System ◽  
Pv System ◽  
Maximum Power Point ◽  
Pv Systems ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point ◽  
Circuit Configuration

This paper proposes a new turbocharger configuration that uses fewer semiconductor locks, fewer reactor coils, and a higher turbidity factor than conventional turbocharger configurations. This allows for easier control, less component loss, high efficiency, reduced circuit size and weight, and low cost. A booster circuit configuration with recommended neutral is required and is suitable for T-shaped and NPC 3-order inverters. In addition, the article also applies the maximum power point tracking algorithm for PV systems working in partially shaded conditions to improve the working efficiency of PV systems, to meet the requirements of the PV systems. grid-connected large capacity PV system.

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 A Modified High Voltage Gain SEPIC Based DC-DC Converter with Continuous Conduction Mode

2020 ◽  
Vol 6 (12) ◽  
pp. 268-274
Author(s):  
G.Vijaykumar and Dr.V.Geetha
Keyword(s):  
High Voltage ◽  
High Efficiency ◽  
Input Voltage ◽  
Voltage Gain ◽  
Pv System ◽  
Operating Modes ◽  
High Voltage Gain ◽  
Voltage Stress ◽  
High Output Voltage ◽  
High Output

A high voltage gain modified SEPIC converter is proposed in this paper. This proposed converter has many advantages i.e., high output voltage, lower voltage stress, high efficiency, voltage gain is high without any coupled inductor and transformer, continuous input current. Thus, there is no overshoot voltage at turn-off process for switches. By using single switches, the CCM mode operation can be easily controlled by this converter, so control system is simple and also wide output values is obtained only by modifying the duty cycle. This modified converter has lower components than conventional converter. The operating modes and design of modified converter are discussed. The output power of this converter is 6 watts. By this converter, this converter capable of developing the two and half times of input voltage. The PV system also used this converter to develop high voltage gain. This high voltage gain is achieved by using MATLAB/SIMULIMK platform.

scholarly journals High gain boost converter with modified voltage multiplier for stand alone PV system

2019 ◽  
Vol 14 (1) ◽  
pp. 185
Author(s):  
Getzial Anbu Mani ◽  
A. K. Parvathy
Keyword(s):  
High Efficiency ◽  
Input Voltage ◽  
High Gain ◽  
Boost Converter ◽  
Pv System ◽  
Boost Converters ◽  
Low Input ◽  
Voltage Multiplier ◽  
Photo Voltaic ◽  
Current Ripple

<p>Boost converters of high gain are used for photo voltaic systems to obtain high efficiency. These high gain Boost converters gives increased output voltage for a low input produces high outputs for low input voltage. The High gain boost converters have the following merits. Conduction losses input current ripple and stress across the switches is reduced while the efficiency is increases. The high gain of the converters with the above said merits is obtained by changing the duty cycle of switches accordingly .In this paper a boost converter working with interleaved concept along with a additional Nstage voltage Multiplier has been carried out by simulation using MATLAB/ simulink and the mathematical modeling of various parameters is also done.</p>

A Comparative Study on Maximum Power Point Tracking Techniques of Photovoltaic Systems

2018 ◽  
Vol 7 (1) ◽  
pp. 66-85 ◽  
Author(s):  
Afef Badis ◽  
Mohamed Habib Boujmil ◽  
Mohamed Nejib Mansouri
Keyword(s):  
High Efficiency ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Pv System ◽  
Maximum Power Point ◽  
Partial Shading ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Conventional Methods ◽  
Power Point

This article concerns maximizing the energy reproduced from the photovoltaic (PV) system, ensured by using an efficient Maximum Power Point Tracking (MPPT) process. The process should be fast, rigorous and simple for implementation because the PV characteristics are extremely affected by fast changing conditions and Partial Shading (PS). PV systems are popularly known to have many peaks (one Global Peak (GP) and several local peaks). Therefore, the MPPT algorithm should be able to accurately detect the unique GP as the maximum power point (MPP), and avoid any other peak to mitigate the effect of (PS). Usually, with no shading, nearly all the conventional methods can easily reach the MPP with high efficiency. Nonetheless, they fail to extract the GP when PS occurs. To overcome this problem, Evolutionary Algorithms (AEs), namely the Particle Swarm Optimization (PSO) and Genetic Algorithm (GA) are simulated and compared to the conventional methods (Perturb & Observe) under the same software.

scholarly journals ICM based ANFIS MPPT controller for grid connected photovoltaic system

2018 ◽  
Vol 7 (3) ◽  
pp. 1508 ◽  
Author(s):  
R Pavan Kumar Naidu ◽  
S Meikandasivam
Keyword(s):  
Boost Converter ◽  
Photovoltaic System ◽  
Voltage Source ◽  
Photovoltaic Module ◽  
Voltage Source Inverter ◽  
Pv System ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Conductance Method ◽  
Power Point

In this paper, grid-connected photovoltaic (PV) system is presented. PV system consists of a photovoltaic module, a boost converter, and voltage source inverter. ANFIS based ICM (Incremental Conductance Method) MPPT (Maximum Power Point Tracking) controller is utilized to produce gate signal for DC-DC boost converter. This controller is used for optimizing the total performance of the Photovoltaic system in turn the errors were reduced in Voltage Source Inverter (VSI). The grid-connected PV system performance is evaluated and har-monics occurred in the system are decreased. The proposed methodology is implemented in MATLAB/Simulink. 

Modeling and stability study of a high frequency and high efficiency photovoltaic DC boost converter

2020 ◽  
Vol 20 (3) ◽  
pp. 817-826
Author(s):  
Shengshan Li ◽  
Ming Li ◽  
Liangliang Liu
Keyword(s):  
Power Generation ◽  
High Frequency ◽  
Output Voltage ◽  
High Efficiency ◽  
Boost Converter ◽  
Stability Study ◽  
Power Circuit ◽  
Point Tracking ◽  
Photovoltaic Power ◽  
Power Generation Systems

Many practical photovoltaic power generation systems with higher output voltage levels rely on photovoltaic DC boost converters with high frequency and high efficiency, which performance directly affect the conversion efficiency of photovoltaic power generation systems. This paper investigates a high-frequency and high-efficiency photovoltaic DC boost converter, which adopts the Boost full-bridge isolation circuit topology with active clamps. The conductance increment method is used as the maximum power point tracking algorithm. The small signal models of its power circuit and control circuit are established to obtain the system model and analyze its stability. The simulation results indicate that the ripple coefficient of output current is less than 3%, and the ripple coefficient of output voltage is less than 5%, which meets the stability requirements.

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