scholarly journals A Harmonic Compensation Strategy in a Grid-Connected Photovoltaic System Using Zero-Sequence Control

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2629 ◽  
Author(s):  
Amirreza Naderipour ◽  
Zulkurnain Abdul-Malek ◽  
Mohammad Reza Miveh ◽  
Mohammad Jafar Hadidian Moghaddam ◽  
Akhtar Kalam ◽  
...  
Keyword(s):  
Control Method ◽  
Photovoltaic System ◽  
Pv System ◽  
Harmonic Compensation ◽  
Fast Transient Response ◽  
Distributed Generator ◽  
Improved Stability ◽  
Zero Sequence ◽  
And Performance ◽  
Grid Connected Inverter

Mitigation of harmonics for a grid-connected inverter is an important element to stabilize the control and the quality of current injected into the grid. This paper deals with the control method of a three-phase Grid-Connected Inverter (GCI) Photovoltaic (PV) system, which is based on the zero-sequence current adjuster. The proposed method is capable of removing the harmonic current and voltage without using any active and passive filters and without the knowledge of the microgrid topology and also impedances of distribution bands and loading conditions. This concept is adopted for the control of a Distributed Generator (DG) in the form of grid-connected inverter. The proposed control can be applied to the grid connected inverter of the PV. The fast dynamic response, simple design, stability, and fast transient response are the new main features of the proposed design. This paper also analyzes the circuit configuration effects on the grid connected inverter capability. The proposed control is used to demonstrate the improved stability and performance.

scholarly journals Multicarrier PWM Based Control of Modular Multilevel Inverter with Grid Connected Solar PV System

2021 ◽  
Vol 7 (05) ◽  
pp. 72-80
Author(s):  
Saminathan S & Dr. Ranjithkumar K
Keyword(s):  
Multilevel Inverter ◽  
Photovoltaic System ◽  
Solar Pv ◽  
Pv System ◽  
Voltage Balancing ◽  
Multilevel Inverters ◽  
Solar Pv System ◽  
And Performance ◽  
Inverter Topology ◽  
Multicarrier Pwm

In this work, a new modular multilevel inverter topology is introduced for a single phase grid connected Photovoltaic system. This multilevel inverter use less number of switches to generate seven levels compared to other conventional multilevel inverters. This requires only one isolated dc source to operate. So it is suitable for renewable energy application. This inverter is designed by submodule configuration; each sub module contains two switches and one DC link capacitor. The sub modules will be added to the inverter depending on number of levels. The voltage balancing of DC link capacitor is carried out by Y matrix PWM technique. Because of Y matrix PWM technique, the inverter gets a self capacitor voltage balancing ability. So there is no need of external devices required for balancing the voltage of capacitor. A PLL for grid integration and LCL filter are designed and integrated with this inverter. The simulation of proposed system is carried out by MATLAB/SIMULINK and performance of THD is monitored as per standards

scholarly journals Low-Voltage Ride-Through Capability of a Single-Stage Single-Phase Photovoltaic System Connected to the Low-Voltage Grid

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Yongheng Yang ◽  
Frede Blaabjerg
Keyword(s):  
Distribution System ◽  
Single Phase ◽  
Control Method ◽  
Low Voltage ◽  
Photovoltaic System ◽  
Pv System ◽  
Pv Systems ◽  
Low Voltage Ride Through ◽  
Three Phase ◽  
Future Challenges

The progressive growing of single-phase photovoltaic (PV) systems makes the Distribution System Operators (DSOs) update or revise the existing grid codes in order to guarantee the availability, quality, and reliability of the electrical system. It is expected that the future PV systems connected to the low-voltage grid will be more active with functionalities of low-voltage ride-through (LVRT) and the grid support capability, which is not the case today. In this paper, the operation principle is demonstrated for a single-phase grid-connected PV system in a low-voltage ride-through operation in order to map future challenges. The system is verified by simulations and experiments. Test results show that the proposed power control method is effective and the single-phase PV inverters connected to low-voltage networks are ready to provide grid support and ride-through voltage fault capability with a satisfactory performance based on the grid requirements for three-phase renewable energy systems.

scholarly journals Control Method for Three-Phase Grid-Connected Inverter PV System Employing Unity Power Factor (UPF) Strategy in Microgrid

2019 ◽  
Vol 115 ◽  
pp. 01006
Author(s):  
Amirreza Naderipour ◽  
Zulkurnain Abdul-Malek ◽  
Vigna K. Ramachandaramurthy ◽  
Josep. M. Guerrero
Keyword(s):  
Power Factor ◽  
Control Method ◽  
Unity Power Factor ◽  
Pv System ◽  
Distributed Power Generation ◽  
Dispersed Generation ◽  
Three Phase ◽  
Control Scheme ◽  
Grid Connected Inverter ◽  
Power Generation Systems

Microgrids (MGs) are developing owing to the rapidly growing distributed power generation systems. The MG controls the flexibility of the network to ensure the requirements of reliability and power quality are satisfied. A typical MG normally consists of dispersed generation resources, which are connected by power electronic inverters, storages, and non-linear loads. This study deals with a compensation control method of a photovoltaic grid-connected inverter using unity power factor (UPF) strategy in MG. In this case, the proposed control method can provide output currents without distortion and with the UPF. Further, it is able to increase the inverter output current to approximately 19 times of the value obtained conventionally. The proposed control method can be applied to three-phase grid interfaced converters such as DG inverters and can also be easily integrated into the conventional control scheme without installation of extra hardware. A theoretical analysis is presented and the performance of the proposed control method for a grid-connected inverter in a MG is evaluated through simulation results.

Estimation and Performance analysis of a 15kW Off-Grid Solar PV System

2018 ◽  
Vol 7 (2.25) ◽  
pp. 143
Author(s):  
Bhuvaneswari C ◽  
Vijay B ◽  
Natarajan P
Keyword(s):  
Tamil Nadu ◽  
Photovoltaic System ◽  
Performance Ratio ◽  
Solar Photovoltaic ◽  
Solar Pv ◽  
Pv System ◽  
Capacity Utilisation ◽  
And Performance ◽  
Solar Photovoltaic System ◽  
Photovoltaic Plant

The primary and most universal measure of all kinds of work by nature is the energy. Coal, Natural gas, Oil and Nuclear energy are net energy yielders and primary sources of energy. The intent of this paper is to assess the performance of 15KW solar power plant installed in Priyadarshini Engineering College (PEC) campus, Vaniyambadi, Vellore District, Tamil Nadu. A 15 kW solar PV plant has been installed to supply electricity to the internet laboratory and library (lighting load). The results obtained from monitoring a 15 KW Solar Photovoltaic system installed on a library roofing of 10m height building. The system was monitored between (July-Sep2016) from 9.30AM to 4.30PM for three days in a week from Monday to Wednesday. The results can be used to provide manufacturers to develop their products and enhance the knowledge in the future in order to improve the design of the off-grid solar photovoltaic system, return of investment during these years. This work focuses on the performance of the solar photovoltaic plant (July-Sep2016) monthly average demand and annual performance parameters, Efficiency, fill factor,capacity Utilisation factor and the characteristics have been plotted in a graph. The graph is drawn between Generated power vs consumed power. The annual yield of the solar photovoltaic plant ranged from 6500-7000 Kwh and performance ratio of 78%. It has capacity Utilisation factor with 6.97%. 

An Experimental Performance Evaluation of a Cold-Region Photovoltaic System With Tracking

2017 ◽  
Vol 139 (3) ◽  
Author(s):  
Wongyu Choi ◽  
Michael B. Pate ◽  
Ryan D. Warren ◽  
Ron M. Nelson
Keyword(s):  
Conversion Efficiency ◽  
Tracking System ◽  
Electrical Energy ◽  
Photovoltaic System ◽  
Performance Ratio ◽  
Cold Region ◽  
Pv System ◽  
Annual Average ◽  
And Performance ◽  
Conversion Efficiencies

A grid-connected dual-axis tracking photovoltaic (PV) system was installed in the Upper Midwest of the U.S., defined as a cold region, and then evaluated and monitored for a 1 year period. This system serves as a real-world application of PV for electricity generation in a region long overlooked for PV research studies. Additionally, the system provides an opportunity for research, demonstration, and education of dual-axis tracking PV, again not commonly studied in cold regions. In this regard, experimental data for the system were collected and analyzed over a 1year period. During the year of operation, the PV system collected a total of 2173 kWh/m2, which equates to 5.95 kWh/m2 on average per day, of solar insolation and generated a total of 1815 kWh, which equates to an energy to rated power ratio of 1779 kWh/kWp of usable AC electrical energy. The system operated at an annual average conversion efficiency and performance ratio of 11% and 0.82%, respectively, while the annual-average conversion efficiency of the inverter was 92%. The tracking system performance is also compared to a stationary PV system, which is located in close proximity to the tracking PV system. The tracking system's conversion efficiency was 0.3% higher than the stationary system while the energy generation per capacity was 40% higher although the PV module conversion efficiencies were not significantly different for the two systems.

Study on Delay Synchronizing Rectification Control Method of Bi-Directional DC-DC Converter for Photovoltaic System

2014 ◽  
Vol 513-517 ◽  
pp. 3434-3437
Author(s):  
Chun Long Zhang ◽  
Bin Wu
Keyword(s):  
Theoretical Analysis ◽  
Power Management ◽  
Control Method ◽  
Photovoltaic System ◽  
Power Device ◽  
Pv System ◽  
Soft Start ◽  
Efficient Control ◽  
Charge Discharge

A novel photovoltaic (PV) system is proposed, which exhibits the advantages of better protection and more efficient control on charge/discharge of the battery. Furthermore, it can realize power management of the system. The key point of power management is how to control the bi-directional converter effectively. Considering traditional soft start strategy would be ineffective for bi-directional converter in the double sources application for the possibility of damaging the power device, a new soft start control method named delay synchronizing rectification control method is proposed. A 500W prototype converter is built to verify the theoretical analysis and the control method.

scholarly journals Comparison between neural network and P&O method in optimizing MPPT control for photovoltaic cell

2020 ◽  
Vol 10 (5) ◽  
pp. 5083
Author(s):  
ِِِAhmed G. Abdullah ◽  
Mothanna sh. Aziz ◽  
Bashar Abdullah Hamad
Keyword(s):  
Neural Network ◽  
Control Method ◽  
Production Capacity ◽  
Clean Energy ◽  
Photovoltaic Cell ◽  
Photovoltaic System ◽  
Pv System ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point

The demand for renewable energy has increased because it is considered a clean energy and does not result in any pollution or emission of toxic gases that negatively affect the environment and human health also requiring little maintenance, and emitting no noise, so it is necessary to develop this type of energy and increase its production capacity. In this research a design of maximum power point tracking (MPPT) control method using Neural Network (NN) for photovoltaic system is presented. First we design a standalone PV system linked to dc boost chopper with MPPT by perturbation and observation P&O technique, and then a design of MPPT by using ANN for the same system is presented. Comparative between two control methods are studied. The results explained in constant and adjustable weather settings such as irradiation and temperature. The results exposed that the proposed MPPT by ANN control can improve the PV array efficiency by reduce the oscillation around the MPP that accure in P&O method and so decreases the power losses. As well as decrease the the overshot that accure in transient response, and hence improving the performance of the solar cell.

scholarly journals PV System Powered BLDC Motor with Energy Storage

2019 ◽  
Vol 8 (6S3) ◽  
pp. 881-883
Keyword(s):  
Distributed Generation ◽  
Control Method ◽  
Vital Role ◽  
Photovoltaic System ◽  
Bldc Motor ◽  
Solar Pv ◽  
Pv System ◽  
Voltage Fluctuations ◽  
Renewable Source ◽  
Pv Power Generation

PV energy is a plentiful renewable source and is expected to play a vital role for distributed generation. In this paper, photovoltaic system includes a battery solution that is prepared in PSCAD. A simple control method able to work the solar PV moduleatmax power utilising a common 3- phase VSC is suggestedfor motor control.BLDC motor is powered by PV energy. The power shared by each source is controlled by power factor corrected boost converter. Battery is connecting to the system in order to prevent voltage fluctuations, and to eliminate the power mismatch between PV power generation and motor. The performance of the system is developed and implemented using the PSCAD/EMTDC Software.

Voltage and Frequency Control of Stand Alone Self-Excited Induction Generator Using Photovoltaic System Based STATCOM

2016 ◽  
Vol 25 (04) ◽  
pp. 1650031 ◽  
Author(s):  
S. Dhanapal ◽  
R. Anita
Keyword(s):  
Energy Storage ◽  
Wind Power ◽  
Fuzzy Logic Controller ◽  
Reactive Power ◽  
Control Method ◽  
Frequency Control ◽  
Active Power ◽  
Photovoltaic System ◽  
Induction Generator ◽  
Pv System

This paper proposes the photovoltaic (PV) interfaced static synchronous compensator (STATCOM) for voltage and frequency control of wind turbine driven self-excited induction generator (SEIG) system. The PV interfaced STATCOM mainly is used for sustainable control of load voltage and frequency of the SEIG system. In addition, PV based STATCOM acts as reactive power compensator, harmonic eliminator and load balancer under balanced/unbalanced nonlinear loads. The energy storage system is incorporated to PV based STATCOM to sustain the active power under variable wind power. The proposed control method extracts the reference current with the use of fuzzy logic controller (FLC) employed in alternating current (AC) voltage control loop. The proposed topology utilizes the PV energy with an energy storage unit to meet the active power requirement of the wind power generating system. Besides, it exports the power generated in the PV system to the load during the unavailability of wind. The PV based STATCOM controlled SEIG system is subjected to different types of loads in order to assess the performance of the system under steady-state and dynamic conditions. The results obtained from the simulation and experimental setup are analyzed to ensure the performance of the proposed controller.

scholarly journals Optimal Sizing and Positioning of Grid Integrated Distributed Generator using Particle Swarm Optimization

2019 ◽  
Vol 9 (2) ◽  
pp. 1429-1439
Keyword(s):  
Particle Swarm Optimization ◽  
Particle Swarm ◽  
Voltage Regulation ◽  
Photovoltaic System ◽  
System Component ◽  
Solar Pv ◽  
Pv System ◽  
Swarm Optimization ◽  
Distributed Generator ◽  
The Cost

The intermittent nature of non-conventional energy sources is a major concern in Designing and Simulation of the Integration of a Distributed Generator (DG) in an existing system. Expansive sizing of any system increases the cost of the system and under sizing causes a lack of reliability and poor voltage regulation. In this paper optimal DG - Solar PV System positioning and sizing method has been proposed using particle swarm optimization algorithm (PSO). Optimal positioning and sizing of the system has been calculated for a photovoltaic system considering annualized cost of the system and reliability constraint. The DG system is simulated to determine the position and size of the system component to test the effectiveness of the proposed algorithm over the energy based system sizing method. Simulation and test results prove that the proposed optimal system configuration is able to supply the load annually with the optimum system installation cost along with its payback period.

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