scholarly journals Cascaded H-Bridge MLI and Three-Phase Cascaded VSI Topologies for Grid-Connected PV Systems with Distributed MPPT

2019 ◽  
Vol 2019 ◽  
pp. 1-22 ◽  
Author(s):  
Abdullah M. Noman ◽  
Khaled E. Addoweesh ◽  
Ayman A. Alabduljabbar ◽  
Abdulrahman I. Alolah
Keyword(s):  
Multilevel Inverter ◽  
Voltage Source ◽  
Voltage Source Inverter ◽  
Pv Systems ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Three Phase ◽  
Power Point ◽  
Cascaded Multilevel Inverter ◽  
Inverter Topology

Cascaded multilevel inverter topologies have received a great deal of attention for grid-connected PV systems. In this paper, three-cascaded multilevel inverter configurations are proposed for grid-connected PV applications. These are the three-phase cascaded H-bridge multilevel inverter topology, three-phase cascaded voltage-source inverter topology using inductors, and three-phase cascaded voltage-source inverter topology using coupled transformers. Distributed maximum power point tracking (MPPT) of PV modules using perturbation and observation algorithm is used for all presented topologies. In all presented configurations, each PV module is connected to one DC-DC isolated Ćuk converter for best MPPT achievement. Simulation is achieved by using the SIMULINK environment. The simulation results show that the three proposed topologies function well in improving the grid’s power quality. The grid currents are kept in phase with the grid voltage to ensure unity power factor, and the THD of the grid currents are within the acceptable range. The proposed topologies are experimentally implemented in the lab, and the switching pulses are generated with the help of the MicroLabBox data acquisition system. Comparing the three topologies according to the number of switches, voltage, and current stresses on switches and THD of the generated voltages and grid currents and according to the efficiency has been achieved in this paper, both experimentally and by simulation. The simulation and experimental results and comparisons are presented to verify the proposed topologies’ effectiveness and reliability.

scholarly journals Multi-Input Ćuk-Derived Buck-Boost Voltage Source Inverter for Photovoltaic Systems in Microgrid Applications

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 2007
Author(s):  
Eltaib Abdeen ◽  
Mahmoud A. Gaafar ◽  
Mohamed Orabi ◽  
Emad M. Ahmed ◽  
Abdelali El Aroudi
Keyword(s):  
Voltage Source ◽  
Voltage Source Inverter ◽  
Maximum Power Point ◽  
Pv Systems ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point ◽  
Pv Generator ◽  
Laboratory Prototype ◽  
Good Agreement

This paper presents a multi-input Ćuk-derived Buck-Boost voltage source inverter (CBBVSI) for Photovoltaic (PV) systems. The proposed topology consists of a single-stage DC-AC inverter that combines both DC-DC and DC-AC stages. The DC-DC stage is used for stepping-up the voltage from the PV generator. Simultaneously, the DC-AC stage is used for interfacing the PV source with the AC grid. The topology allows three sources to utilize the antiparallel diodes for each inverter leg for transferring the energy. The proposed system exhibits several features such as a reduction of the number of components compared to typical two-stage structures, and Split-Source Inverter (SSI), and Z-Source Inverter (ZSI) topologies. Moreover, the power of each PV source can be harvested either simultaneously or separately since independent Maximum Power Point Tracking (MPPT) is performed. The system was simulated using MATLAB/SIMULINK software and a 1 kW laboratory prototype was implemented to verify the operation of the proposed CBBVSI. The numerical simulations are presented together with the experimental results, showing a good agreement.

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. 

Daily Constant PV Output Power Supplying AC pumps using Batteries

2016 ◽  
Vol 2 (2) ◽  
pp. 275
Author(s):  
Mohamed Mahmoud Ismail
Keyword(s):  
Output Power ◽  
Boost Converter ◽  
Operating Conditions ◽  
Voltage Source ◽  
Maximum Power Point ◽  
Pv Array ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Three Phase ◽  
Power Point

This paper presents 200 KW three phase standalone photovoltaic systems supplying pumping station consist of four pumps 40 KW rating. The system utilizes a two stage energy conversion power conditioning unit topology composed of a DC-DC boost converter and three level-three phase voltage source inverter (VSI). The Boost converter in this paper is designed to operate in continuous mode and controlled for maximum power point tracking (MPPT). The fluctuating output power of the PV array system during the day is the commonly problem in the power system.  In this paper a nickel-Cadmium battery will be used to maintain the output power generated from the PV array supplying the pumps to be constant all the day under different operating conditions. The system is modeled and studied using MATLAB/Simulink

scholarly journals Simulation of Standalone Three-Phase Photovoltaic System with SPWM and SVPWM Techniques

2020 ◽  
Vol 9 (4) ◽  
pp. 2208-2215
Keyword(s):  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Photovoltaic System ◽  
Voltage Source ◽  
Photovoltaic Module ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Three Phase ◽  
Power Point

Maximum power point tracking is a method employed to produce the utmost power available from the photovoltaic module. To date, many algorithms for maximum power point tracking technique had been stated, every with its own capabilities. In this paper, a Luo converter with high-voltage conversion gain is employed to track photovoltaic panels at maximum power and to step up the voltage to a higher level. This work also aims to validate the performance of the maximum power point tracking system with Luo converter which utilizes incremental conductance techniques. Space vector modulation and sinusoidal pulse width modulations are the control techniques employed to control the three-phase voltage source converter. In order to measure the overall performance indices of the proposed system, a simulation is carried out in MATLAB / Simulink environment.

Modeling and Simulation of Three Phase Grid Connected Solar PV System

2018 ◽  
Vol 8 (3) ◽  
Author(s):  
Pradeep Rai ◽  
Roshan Nayak
Keyword(s):  
Voltage Source ◽  
Solar Pv ◽  
Pv System ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Three Phase ◽  
Solar Pv System ◽  
Power Point ◽  
Control Methodology

This paper proposes a nonlinear control methodology for three phase grid connected of PV generator. It consists of a PV arrays; a voltage source inverter, a grid filter and an electric grid. The controller objectives are threefold: i) ensuring the Maximum power point tracking (MPPT) in the side of PV panels, ii) guaranteeing a power factor unit in the side of the grid, iii) ensuring the global asymptotic stability of the closed loop system. Based on the nonlinear model of the whole system, the controller is carried out using a Lyapunov approach. It is formally shown, using a theoretical stability analysis and simulation results that the proposed controller meets all the objectives.

FOPID Controller Based AC Pump Supplied from PV Standalone Source Tuned using Fuzzy Logic Type 2

2016 ◽  
Vol 4 (1) ◽  
pp. 10 ◽  
Author(s):  
Mohamed Mahmoud Ismail ◽  
Ahmed Fahmy Bendary
Keyword(s):  
Boost Converter ◽  
Voltage Source ◽  
Phase Voltage ◽  
Power Conditioning ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Three Phase ◽  
Power Point

This paper presents 500 KW three phase standalone photovoltaic systems supplying pumping station consist of four pumps 80 KW rating. The system utilizes a two stage energy conversion power conditioning unit topology composed of a DC-DC boost converter and three level-three phase voltage source inverter (VSI). The Boost converter in this paper is designed to operate in continuous mode and controlled for maximum power point tracking (MPPT). In this paper, the performance of the pumps is improved by adapting the controller of MPPT using different techniques. The system is modeled and studied using MATLAB/Simulink.

scholarly journals Performance of Cuk-KY Converter Fed Multilevel Inverter for Hybrid Sources

2018 ◽  
Vol 10 (2) ◽  
pp. 436 ◽  
Author(s):  
V. Vasudevan ◽  
K. Balaji
Keyword(s):  
High Gain ◽  
Multilevel Inverter ◽  
Maximum Power Point ◽  
Cuk Converter ◽  
Point Tracking ◽  
Power Point Tracking ◽  
High Voltage Gain ◽  
Power Point ◽  
Hybrid Renewable Energy ◽  
Cascaded Multilevel Inverter

<span lang="EN-US">Distributed energy source based electricity generation is an essential factor for the economic growth and development of a country. The photovoltaic, fuel cell and battery based power generation offer a high voltage gain. The DC-DC CUK converter based on both buck and boost mode of operation is proposed for high gain dc link voltage. The hybrid CUK –KY Converter based multilevel inverter is designed and implemented. Here, the main advantages of hybrid boost mode operation of Cuk converter, step up configuration is used which will result in improve conversion voltage ratio and better damping of oscillations. The DC-DC converter voltage has regulated by the maximum power point tracking and PI control based method is used. The cascaded multilevel inverter in hybrid renewable energy production integrating with switched capacitor method is designed. The proposed converter is designed and implemented in MATLAB/SIMULINK environment.</span>

Investigation of Quasi Z-Source Cascaded Multilevel Inverter for PV System with Maximum Power Point Tracking

2014 ◽  
Vol 622 ◽  
pp. 105-110
Author(s):  
Devaraj Umarani ◽  
R. Seyezhai
Keyword(s):  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Multilevel Inverter ◽  
Photovoltaic System ◽  
Control Technique ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point ◽  
Cascaded Multilevel Inverter

This paper investigates the quasi Z-source cascaded multilevel inverter for a photovoltaic system with maximum power point tracking. The main advantage of quasi z-source configuration is that it has boost characteristics and inversion capability in a single stage avoiding complexity of having a number of converter stages thereby increasing the efficiency. Also it has continuous input characteristic which makes it best suitable for PV applications. Perturb and Observe (P&O) algorithm has been chosen for tracking the maximum power point of the PV source. Five level cascaded inverter with quasi - impedance network powered by PV sources has been considered in this paper. Maximum constant boost control technique has been implemented for controlling the shoot-through period of the inverter. Simulation of the proposed topology has been carried out in Matlab/Simulink and performance parameters have been calculated and the results are verified.

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