Journal articles: 'Grid-connected PV systems'

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Khan, Javeed Ahmad. "Grid connected PV systems and their growth in power system." International Journal of Trend in Scientific Research and Development Volume-2, Issue-3 (April 30, 2018): 1791–97. http://dx.doi.org/10.31142/ijtsrd11646.

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Roman, E., R. Alonso, P. Ibanez, S. Elorduizapatarietxe, and D. Goitia. "Intelligent PV Module for Grid-Connected PV Systems." IEEE Transactions on Industrial Electronics 53, no. 4 (June 2006): 1066–73. http://dx.doi.org/10.1109/tie.2006.878327.

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Qian, Junjie, Kaiting Li, Huaren Wu, Jianfei Yang, and Xiaohui Li. "Synergetic Control of Grid-Connected Photovoltaic Systems." International Journal of Photoenergy 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/5051489.

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It is important to improve the dynamic performance and the low-voltage ride-through (LVRT) capability of a grid-connected photovoltaic (PV) system. This paper presents synergetic control for the control of a grid-connected PV system. Modeling of a grid-connected PV system is described, and differential-algebra equations are obtained. Two control strategies are used in normal operation and during LVRT of a PV system. Practical synergetic controllers with two control strategies are synthesized. The mathematical expressions are derived for computing control variables. The design of the synergetic controllers does not require the linearization of the grid-connected PV system. A grid-connected PV system with synergetic controllers is simulated in Simulink surroundings. The control performance is studied in normal operation and during LVRT. Simulation results show that the synergetic controllers are robust and have good dynamic characteristics under different operation states.

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Jamuna, Venkatesan, Natesan Saritha, and N. Nanthini. "Fault Analysis on Photo Voltaic Fed Grid Connected Systems." Advanced Materials Research 984-985 (July 2014): 1013–22. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.1013.

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This work presents a photovoltaic (PV) system, connected to a three phase grid. This work focuses on fault analysis in a grid connected photo-voltaic (PV) energy system. In this work, a three phase Multi-level Inverter connected with an AC grid fed by photovoltaic systems with advanced sine PWM control scheme is presented. The proposed modulation technique uses single reference signal and number of high frequency carrier signals to generate the PWM signal. Now a days, most of the photovoltaic (PV) power sources are connected to the AC grid. When photovoltaic power sources are connected to grid, the grid connected PV system is affected by various power quality issues like voltage sag, voltage swell, voltage disturbances, waveform distortions and three phase fault. One of the main power quality problems is three phase fault and it is appeared in the grid due to short circuit condition between two phases and ground. Fault analysis is carried out by creating a LG, LL, LLL and LLLG fault in the grid connected systems. Grid side voltage, current and power waveforms at the grid side are analysed with fault conditions. A detailed simulation has been done for the Multi-Level Inverter and the validation of system is verified through MATLAB/SIMULINK and the results are presented.

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Tiwari, Mohit. "Grid Connected PV Systems: Performance and Responsible Factors." International Journal for Research in Applied Science and Engineering Technology 8, no. 4 (April 30, 2020): 440–47. http://dx.doi.org/10.22214/ijraset.2020.4071.

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Silvestre, Santiago, Aissa Chouder, and Engin Karatepe. "Automatic fault detection in grid connected PV systems." Solar Energy 94 (August 2013): 119–27. http://dx.doi.org/10.1016/j.solener.2013.05.001.

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Erge, T., V. U. Hoffmann, and K. Kiefer. "The German experience with grid-connected PV-systems." Solar Energy 70, no. 6 (2001): 479–87. http://dx.doi.org/10.1016/s0038-092x(00)00143-2.

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Zhou, Xiao Jie, and Yi Ruan. "Research on Two-Stage Three-Phase Photovoltaic Grid-Connected System." Advanced Materials Research 535-537 (June 2012): 1247–51. http://dx.doi.org/10.4028/www.scientific.net/amr.535-537.1247.

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Nowadays the penetration of PV-generated power energy into the utility grid is increasing exponentially. This paper focuses on two-stage three-phase grid-connected PV systems, which includes modeling of three-phase grid-connected PV systems, grid-connected control strategy of inverter. The inverter based on the grid-voltage oriented vector control used SVPWM-based synchronous current vector PI controllers to control the grid-current of the common point in three-phase grid-connected system. Theoretic analysis and experimental results on a 2.5KW prototype verify the presented algorithm.

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Verayiah, Renuga, and Anusiya Iyadurai. "A Comparison Study on Types of PV for Grid Connected Photovoltaic Power." Indonesian Journal of Electrical Engineering and Computer Science 6, no. 2 (May 1, 2017): 349. http://dx.doi.org/10.11591/ijeecs.v6.i2.pp349-356.

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Grid connected photovoltaic (PV) power systems is today’s breakthrough for renewable energy source in electricity generation Grid-connected photovoltaic (PV) power systems have the advantage of more effective utilization for highest renewable source of electricity generation and tendency to continual growth in the next years. The output performance grid connected photovoltaic (PV) power systems is influenced by the impact of cell temperature or ambient temperature and solar irradiance of the solar module. This paper highlights the effect of output energy of solar module by implementing different types of solar module technology and selecting the highest energy output of the module technology for modelling and simulating the design of grid connected photovoltaic (PV) power system using Matlab/Simulink.

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Hu, Bo, and Zai Lin Piao. "Research on the System Modeling and Control of Single-Phase Pv Flexible Grid-Connected." Advanced Materials Research 960-961 (June 2014): 1367–70. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.1367.

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Photovoltaic systems can not meet the needs in the power grid without the impact, due to its penriodicity, intermittent and randomness, thus the key to solve the core technology of photovoltaic power generation system is important to achieve PV grid-connected. This article explains the two-stage topology system control and modeling of single-phase PV grid-connected: Modeling of DC / DC converter provides basis for maximum power point tracking; DC / AC inverter in grid-connected modeling offer efficient communication basis for grid-connected, it research on the control strategies for DC / DC and DC / AC circuit: that PV grid-connected complete alternating current of unit power factor using the booster circuit and inverter control structure, in order to offer photovoltaic systems flexible grid-connected the foundation.

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Jiang, Hui, Zhi Wei Li, and Xin Zheng. "Studies on the Grid-Connected Characteristics about Large-Scale Photovoltaic Power Station in Weak Grid Systems." Advanced Materials Research 347-353 (October 2011): 639–46. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.639.

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This paper made some researches of modeling on the systems of the large-scale photovoltaic（PV） power station, and established the PV model, the rectifier and inverter circuits and so on. Using MATLAB and PSASP, simulation and analysis of grid-connected characteristics about the large-scale PV power station in weak grid systems were carried out, focusing on the transient stability in the fault condition of the line-side and the power quality. These two simulation results had good consistency, which demonstrated the accuracy of the large-scale PV power station model in this paper and the analysis of its grid-connected characteristics. The conclusion of this paper will provide some theoretical basis of improving the stability of grid-connected and reducing the harmonic current in weak grid systems, and will also provide some theoretical basis and the guide of grid-connected for the new energy strategy of our country in the future.

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Kamble, Vishwesh, and Milind Marathe. "Modelling and Simulation of Solar PV Array Field Incorporated with Solar Irradiance and Temperature Variation to Estimate Output Power of Solar PV Field." International Journal of Students' Research in Technology & Management 3, no. 2 (September 27, 2015): 251–57. http://dx.doi.org/10.18510/ijsrtm.2015.323.

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Photovoltaic systems are designed to feed either to grid or direct consumption. Due to global concerns, significant growth is being observed in Grid connected solar PV Plants. Since the PV module generates DC power, inverter is needed to interface it with grid. The power generated by a solar PV module depends on surrounding such as irradiance and temperature. This paper presents modelling of solar PV arrays connected to grid-connected plant incorporated with irradiance and temperature variation, to design simulator to study and analyse effect on output power of solar PV arrays with irradiance and temperature variation, also to estimate the output power generated by PV arrays. The mathematical model is designed implemented separately on simulator for each PV components connected in PV systems, which are PV cell, Module, sting, array and field of arrays. The results from simulation based on model are verified by the data collected from power plants and experiments done on solar PV cell.

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Reddy Salkuti, Surender. "Optimal operation management of grid-connected microgrids under uncertainty." Indonesian Journal of Electrical Engineering and Computer Science 16, no. 3 (December 1, 2019): 1163. http://dx.doi.org/10.11591/ijeecs.v16.i3.pp1163-1170.

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This paper proposes a new optimal operation of Microgrids (MGs) in a distribution system with wind energy generators (WEGs), solar photovoltaic (PV) energy systems, battery energy storage (BES) systems, electric vehicles (EVs) and demand response (DR). To reduce the fluctuations of wind, solar PV powers and load demands, the BES systems and DR are utilized in the proposed hybrid system. The detailed modeling of WEGs, solar PV units, load demands, BES systems and EVs has been presented in this paper. The objective considered here is the minimization of total operating cost of microgrid, and it is formulated by considering the cost of power exchange between the main power grid and microgrid, cost of wind and solar PV energy systems, cost of BES systems, EVs and the cost due to the DR in the system. Simulations are performed on a test microgrid, and they are implemented using GAMS software. Various case studies are performed with and without considering the proposed hybrid system.

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Díaz-Araujo, Marcolino Humberto, Aurelio Medina-Rios, Manuel Madrigal-Martínez, and Luis Arthur Cleary-Balderas. "Analysis of Grid-Connected Photovoltaic Generation Systems in the Harmonic Domain." Energies 12, no. 24 (December 16, 2019): 4785. http://dx.doi.org/10.3390/en12244785.

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In this contribution, a harmonic domain (HD) model of grid-connected photovoltaic (PV) generation systems is proposed. The topology of the PV generation system contains a PV array connected to a DC/DC converter and a DC/AC converter, coupled to the grid through a filter. The individual components of the PV system are modeled in the HD. The PV array is represented as a Thevenin equivalent, whereas the DC/DC converter and the DC/AC converter are represented in the HD using switching function matrices. The periodic steady-state solution of the PV system is obtained through simple matrix/vector operations. The results obtained by the proposed model are validated against the response obtained with the PSCAD/EMTDC® simulator, widely accepted by the power industry.

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Omar, Moien A., and Marwan M. Mahmoud. "Improvement Approach for Matching PV-array and Inverter of Grid Connected PV Systems Verified by a Case Study." International Journal of Renewable Energy Development 10, no. 4 (April 8, 2021): 687–97. http://dx.doi.org/10.14710/ijred.2021.36082.

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Correct matching between PV array and inverter improves the inverter efficiency, increases the annual produced energy, decreases the clipping losses of the inverter, and prevent to a large extent the inverter frequent shut downs during clear sunny days of high solar radiation and low ambient temperature. Therefore, this paper presents a new methodology for selecting the appropriate peak power of the PV array with respect to the inverter output AC rated power taking into account the local daily distribution of solar radiation and ambient temperature. In addition, the proposed methodology specifies the appropriate number of PV modules in each string and the number of parallel strings connected to the input of the inverteraccording to its specifications and to PV cell temperature. Mathematically modeling of system parameters and components are presented and used in the simulation to investigate the different scenarios. The paper presents also a case study using simulation to find the optimal matching parameters of a PV array connected to an inverter with the specifications: 6 kW rated output power, an input mpp voltage range of 333-500 V, 6.2 kW maximum input DC power, and an output AC voltage of 230 Vrms. Considering the local climate conditions in West Bank, the simulation resulted a peak power of 7 kW for the PV array, which is greater than the inverter output power by the factor 1.16. In addition, the obtained PV array consists of two parallel strings each includes 12 PV modules connected in series while each PV module is rated at 290 W. The output voltage of the PV arrayvaries between 359 V to 564 Vat minimum and maximum temperature of 10 ˚C to 70 ˚C respectively. This PV array-inverter combination resulted by simulation an annual yield of 1600 kWh/kWp and an energy of 11197 kWh which corresponds to an energy gain of 1591 kWh/year more than using a PV array with a peak power of 6 kW as the inverter rated power.

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Raturi, Atul, Aman Singh, and Ravita D. Prasad. "Grid-connected PV systems in the Pacific Island Countries." Renewable and Sustainable Energy Reviews 58 (May 2016): 419–28. http://dx.doi.org/10.1016/j.rser.2015.12.141.

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Alaa, Hala, and Nader Gharib. "PV Grid-Connected Systems: Performance and Architectural Integration Aspects." IOP Conference Series: Materials Science and Engineering 974 (December 30, 2020): 012020. http://dx.doi.org/10.1088/1757-899x/974/1/012020.

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Rai, Satya Ravi, Jaya Kumar S V, and Keerthi Deepika K. "Model Predictive Current Control of Grid Connected PV Systems." Indonesian Journal of Electrical Engineering and Computer Science 2, no. 2 (May 1, 2016): 285. http://dx.doi.org/10.11591/ijeecs.v2.i2.pp285-296.

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This paper deals with the design and simulation of an efficient solar photovoltaic system with a maximum power point tracking system (MPPT). Maximum power point (MPP) is obtained by using Perturb and Observe (P&O) algorithm. The output from solar panel is fed to the DC-DC (Boost) converter which steps up the output voltage. It is then fed to a 3-phase inverter. The inverter used is a 3-phase two-level inverter implemented with a Model Predictive Control strategy. Model of the system is considered in order to predict the control variables. Optimum switching state is selected by minimizing the cost function for each sampling period. This is achieved through modelling and MATLAB simulation of various stages that constitute the overall system.

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Pigazo, A., M. Liserre, R. A. Mastromauro, V. M. Moreno, and A. Dell'Aquila. "Wavelet-Based Islanding Detection in Grid-Connected PV Systems." IEEE Transactions on Industrial Electronics 56, no. 11 (November 2009): 4445–55. http://dx.doi.org/10.1109/tie.2008.928097.

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Wu, Hao, and Yunhe Hou. "Recent Development of Grid-Connected PV Systems in China." Energy Procedia 12 (2011): 462–70. http://dx.doi.org/10.1016/j.egypro.2011.10.062.

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Han, Xiaonan, Xin Ai, and Yingyun Sun. "Research on large-scale dispatchable grid-connected PV systems." Journal of Modern Power Systems and Clean Energy 2, no. 1 (January 21, 2014): 69–76. http://dx.doi.org/10.1007/s40565-014-0043-5.

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Orchi, Tahsin, Md Mahmud, and Amanullah Oo. "Partial Feedback Linearizing Model Predictive Controllers for Multiple Photovoltaic Units Connected to Grids through a Point of Common Coupling." Electronics 7, no. 9 (September 3, 2018): 175. http://dx.doi.org/10.3390/electronics7090175.

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In this paper, partial feedback linearizing model predictive controllers are designed for grid-connected systems comprising multiple photovoltaic (PV) units where these units are connected through a point of common coupling (PCC). The proposed controllers are designed for voltage source inverters (VSIs) based on comprehensive dynamical models of grid-connected PV systems with the proposed topology. The proposed partial feedback linearization scheme decouples multiple PV units in the forms of several reduced-order subsystems and enables linear controller design through the linear continuous-time receding horizon model predictive control scheme. The proposed partial feedback linearization scheme also considers dynamic interactions among multiple PV units as external noises or disturbances and decouples these noises. This paper includes the noise decoupling capability of the partial feedback linearization for grid-connected PV systems with multiple PV units which are connected through a PCC. Simulation results clearly demonstrate the effectiveness of the proposed scheme under different operating conditions as compared to an existing proportional integral controller.

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Cano, Juan M., Aranzazu D. Martin, Reyes S. Herrera, Jesus R. Vazquez, and Francisco Javier Ruiz-Rodriguez. "Grid-Connected PV Systems Controlled by Sliding via Wireless Communication." Energies 14, no. 7 (March 31, 2021): 1931. http://dx.doi.org/10.3390/en14071931.

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Grid-connected photovoltaic (PV) systems are designed to provide energy to the grid. This energy transfer must fulfil some requirements such as system stability, power quality and reliability. Thus, the aim of this work is to design and control a grid-connected PV system via wireless to guarantee the correct operation of the system. It is crucial to monitor and supervise the system to control and/or detect faults in real time and in a remote way. To do that, the DC/DC converter and the DC/AC converter of the grid-connected PV system are controlled wirelessly, reducing costs in cabling installations. The used control methods are the sliding for the DC/DC converter and the Proportional-Integral (PI) for the inverter. The sliding control is robust, ensures system stability under perturbations, and is proven to work well via wireless. The PI control is simple and effective, proving its validity through wireless too. In addition, the effect of the communications is analysed in both controllers. An experimental platform has been built to conduct the experiments to verify the operation of the grid-connected PV system remotely. The results show that the system operates well, achieving the desired values for the maximum power point tracker (MPPT) sliding control and the energy transfer from the inverter to the grid.

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Yang, Yongheng, and Frede Blaabjerg. "Low-Voltage Ride-Through Capability of a Single-Stage Single-Phase Photovoltaic System Connected to the Low-Voltage Grid." International Journal of Photoenergy 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/257487.

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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.

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Hiendro, Ayong, Ismail Yusuf, F. Trias Pontia Wigyarianto, Kho Hie Khwee, and Junaidi Junaidi. "Optimum Renewable Fraction for Grid-connected Photovoltaic in Office Building Energy Systems in Indonesia." International Journal of Power Electronics and Drive Systems (IJPEDS) 9, no. 4 (December 1, 2018): 1866. http://dx.doi.org/10.11591/ijpeds.v9.i4.pp1866-1874.

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This paper analyzes influences of renewable fraction on grid-connected photovoltaic (PV) for office building energy systems. The fraction of renewable energy has important contributions on sizing the grid-connected PV systems and selling and buying electricity, and hence reducing net present cost (NPC) and carbon dioxide (CO2) emission. An optimum result with the lowest total NPC for serving an office building is achieved by employing the renewable fraction of 58%, in which 58% of electricity is supplied from the PV and the remaining 42% of electricity is purchased from the grid. The results have shown that the optimum grid-connected PV system with an appropriate renewable fraction value could greatly reduce the total NPC and CO2 emission.

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Poyyamani Sunddararaj, Suvetha, Shriram S. Rangarajan, Subashini Nallusamy, E. Randolph Collins, and Tomonobu Senjyu. "A Brief Survey on Important Interconnection Standards for Photovoltaic Systems and Electric Vehicles." World Electric Vehicle Journal 12, no. 3 (August 11, 2021): 117. http://dx.doi.org/10.3390/wevj12030117.

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The consumer adoption of electric vehicles (EVs) has become most popular. Numerous studies are being carried out on the usage of EVs, the challenges of EVs, and their benefits. Based on these studies, factors such as battery charging time, charging infrastructure, battery cost, distance per charge, and the capital cost are considered factors in the adoption of electric vehicles and their interconnection with the grid. The large-scale development of electric vehicles has laid the path to Photovoltaic (PV) power for charging and grid support, as the PV panels can be placed at the top of the smart charging stations connected to a grid. By proper scheduling of PV and grid systems, the V2G connections can be made simple. For reliable operation of the grid, the ramifications associated with the PV interconnection must be properly addressed without any violations. To overcome the above issues, certain standards can be imposed on these systems. This paper mainly focuses on the various standards for EV, PV systems and their interconnection with grid-connected systems.

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Rakhshani, Elyas, Kumars Rouzbehi, Adolfo J. Sánchez, Ana Cabrera Tobar, and Edris Pouresmaeil. "Integration of Large Scale PV-Based Generation into Power Systems: A Survey." Energies 12, no. 8 (April 13, 2019): 1425. http://dx.doi.org/10.3390/en12081425.

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This paper reports a general overview of current research on analysis and control of the power grid with grid scale PV-based power generations as well as of various consequences of grid scale integration of PV generation units into the power systems. Moreover, the history of PV renewable growth, deregulation of power system and issues related to grid-connected PV systems considering its contribution to various responsibilities like frequency control, virtual inertia capabilities and voltage regulation are discussed. Moreover, various outcomes of the high-penetrated grid with PV power plants such as power quality, active and reactive power control, protection, balancing and reliability under various loading conditions are reviewed and discussed.

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Li, Chong. "Comparative Performance Analysis of Grid-Connected PV Power Systems with Different PV Technologies in the Hot Summer and Cold Winter Zone." International Journal of Photoenergy 2018 (October 14, 2018): 1–9. http://dx.doi.org/10.1155/2018/8307563.

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The objective of this paper is to establish the performance of 8 kWp grid-connected photovoltaic (PV) power systems based on different PV module technologies in Nanjing, China. Nanjing has a hot summer and a cold winter which are considered based on monthly average solar irradiation and ambient temperature specifically for the deployment of grid-connected PV systems. The study focuses on performance assessment of grid-connected PV systems using typical PV modules made of monocrystalline silicon (m-Si), polycrystalline silicon (p-Si), edge-defined film-fed growth silicon (EFG-Si), cadmium telluride (CdTe) thin film, copper indium selenide (CIS) thin film, heterojunction with intrinsic thin layer (HIT), and hydrogenated amorphous silicon single-junction (a-Si:H single-PV) installed on location. The yearly average energy output, PV module and system efficiency, array yield, final yield, reference yield, performance ratio, monthly average array capture losses, and system losses of seven PV module technologies are all analyzed. The results show that grid-connected PV power system performance depends on geographical location, PV module types, and climate conditions such as solar radiation and ambient temperature. In addition, based on energy output and efficiency, the HIT PV power technology can be considered as the best option and CdTe and p-Si as the least suitable options for this area. The monthly average performance ratio of the CdTe technology was higher than those of other technologies over the monitoring period in Nanjing.

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Singh, Neha, and Prof Govind Prasad Pandiya. "Interpretation of MPPT Techniques in Grid Connected Solar PV Array System." IJOSTHE 5, no. 6 (February 12, 2019): 5. http://dx.doi.org/10.24113/ojssports.v5i6.96.

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Solar energy is one of the most used and readily available renewable energy sources among the other energy sources. The power generated by PV systems is dependent on solar irradiance and temperature parameters. In the literature, many researchers and studies are interested in estimating true maximum efficiency point for the PV systems. Due to that fact, MPPT applications and techniques become an important issue for PV systems under both uniform and non uniform conditions. Although, PV system under uniform environment has only one maxima point on P-V curve which is simple to estimate correctly by conventional MPPT techniques, it is not as simple as under non-uniform condition such as partial shading and mismatch effects. To overcome the drawbacks of the conventional MPPTs under non uniform condition, researchers has been investigated new soft computing MPPTs, PV array configurations, system architectures and topologies.

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Guo, Jia, Zhi Gang Li, Ya Ping Cheng, and Chun Yan Cui. "The Research of Two Staged Non-Isolated Photovoltaic Grid Connected Inverter Control Method." Advanced Materials Research 773 (September 2013): 139–42. http://dx.doi.org/10.4028/www.scientific.net/amr.773.139.

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Grid-connected inverter topologies and control methods are analyzed and compared on the basis of two non-isolated PV grid-connected inverter circuit topology as 3kVA grid connected PV systems. In this paper, the current control method, the DC bus voltage outer grid current inner loop of the dual closed-loop PI control method. Sampled signal through the system circuit for processing, resulting in a SPWM drive signal to control the conduction of the power devices off the grid current control.

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Jahan, Arshi, and Mr Rishabh Shukla. "Analysis of Grid Connected Solar PV System with Distributed Per Phase Inverter with Buck Boost Control Driving Unbalanced Load." SMART MOVES JOURNAL IJOSCIENCE 5, no. 11 (November 19, 2019): 14–21. http://dx.doi.org/10.24113/ijoscience.v5i11.237.

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Small scale PV systems are mainly used in Distributed Generating systems (DG).The problem with PV DG system is for designing this system high voltage gain need to be required. In order to achieve this high gain we are choosing Grid connected PV system that is large scale Grid connected PV system In Grid connected PV system Power Electronic devices such as converters and inverters are main parts along with PV panels. In our work we have designed a solar PV system with varying irradiation in MATLAB/SIMULINK and enhance its output capacity before its integration with the grid. To design a suitable controller for per phase designed power converter such that it produces better output results than the traditional converter. The controller has to be designed along with buck boost control of DC output from the system instead of designing a whole new and separate control algorithm for inverter. It was concluded that active power output from the system from approximately 1MW in conventional inverter has improved to 12MW in the proposed scheme.

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Varshney, Gunjan, D. S. Chauhan, and M. P. Dave. "Evaluation of Power Quality Issues in grid Connected PV Systems." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 4 (August 1, 2016): 1412. http://dx.doi.org/10.11591/ijece.v6i4.10167.

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This paper deals with the evaluation of power quality issues in grid connected PV systems. This paper also presents complete simulation, modeling and control of three phase grid connected solar PV module with Maximum Power Point Tracking. Perturb and Observe (P&O) method has been used for Maximum Power Point Tracking. In the proposed model DC bus voltage control , harmonic mitigation and power factor control are discussed as power quality issues. The simulation results are shown in the graphical waveforms and simulation is performed in MATLAB using SIMULINK environment and PSB toolboxes.

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Varshney, Gunjan, D. S. Chauhan, and M. P. Dave. "Evaluation of Power Quality Issues in grid Connected PV Systems." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 4 (August 1, 2016): 1412. http://dx.doi.org/10.11591/ijece.v6i4.pp1412-1420.

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This paper deals with the evaluation of power quality issues in grid connected PV systems. This paper also presents complete simulation, modeling and control of three phase grid connected solar PV module with Maximum Power Point Tracking. Perturb and Observe (P&O) method has been used for Maximum Power Point Tracking. In the proposed model DC bus voltage control , harmonic mitigation and power factor control are discussed as power quality issues. The simulation results are shown in the graphical waveforms and simulation is performed in MATLAB using SIMULINK environment and PSB toolboxes.

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Jiang, Hui, Xin Zheng, Xin Quan Wu, and Zhi Wei Li. "Studies on the Grid-Connected Characteristics about Large-Scale Photovoltaic Power Bases." Applied Mechanics and Materials 291-294 (February 2013): 152–57. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.152.

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This paper made some researches of modeling on the systems of the photovoltaic（PV） power station, and analyzing the photovoltaic grid-connected generation system. Using MATLAB and PSASP, simulation and analysis of grid-connected characteristics about the large-scale PV power bases were carried out, focusing on the influence of the power flow after the grid connection of large scale PV power bases, the transient stability in the fault condition of the line-side and in the condition of the light disturbance. Specific measures are presented to solve problems. The conclusion of this paper will provide some theoretical basis of improving the stability of grid-connected of the large-scale PV power bases and will also provide some theoretical basis and the guide of grid-connected for the new energy strategy of our country in the future.

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Ngo, Xuan Cuong, Thi Hong Nguyen, Nhu Y. Do, Duc Minh Nguyen, Dai-Viet N. Vo, Su Shiung Lam, Doyeon Heo, et al. "Grid-Connected Photovoltaic Systems with Single-Axis Sun Tracker: Case Study for Central Vietnam." Energies 13, no. 6 (March 20, 2020): 1457. http://dx.doi.org/10.3390/en13061457.

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Recently, the demand for small grid-connected photovoltaic (PV) systems has been rapidly increasing; this is due to the reduction in the costs of grid-connected storage systems as compared to those of the stand-alone ones. Notably, the performance of the solar tracking system is not only depending on the types but also the region that they are set up and used. To understand how solar tracking systems work globally, we need to know their performance in each country and even the different parts of a country. In this study, two grid-connected PV systems with 250 W solar modules were used to investigate the efficient improvement of a single-axis sun tracking system in Central Vietnam. First, a mechanical tracking device with a linear actuator and a controller was designed and then its performance was comprehensively investigated with a grid-connected PV system. In addition to evaluating the energy gain by the tracking system, this study also considered the energy consumption of the linear actuator with its controller and a small grid-connected PV system; this has generally been omitted in previous works. Experimental results indicate that the total energy consumption of the tracking system was approximately 2–8% of the energy generated by the grid-connected PV system. The maximum overall energy generation was confirmed to have increased by up to 30.3% on a sunny day upon using the proposed tracking system; further, the net energy gain by using the sun tracker was ascertained to be 15.2% in average weather conditions. Based on the success of this work, we will keep experimenting with other parts of Vietnam. Also, we will collaborate with colleagues in other countries to create a guideline for understanding and using the solar tracker regionally and globally.

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So, Jung Hun, Young Seok Jung, Gwon Jong Yu, Ju Yeop Choi, and Jae Ho Choi. "Performance results and analysis of 3kW grid-connected PV systems." Renewable Energy 32, no. 11 (September 2007): 1858–72. http://dx.doi.org/10.1016/j.renene.2006.10.003.

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Sangwongwanich, Ariya, Yongheng Yang, and Frede Blaabjerg. "High-Performance Constant Power Generation in Grid-Connected PV Systems." IEEE Transactions on Power Electronics 31, no. 3 (March 2016): 1822–25. http://dx.doi.org/10.1109/tpel.2015.2465151.

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Caamaño, E., and E. Lorenzo. "Modelling and financial analysis tools for PV grid-connected systems." Progress in Photovoltaics: Research and Applications 4, no. 4 (July 1996): 295–305. http://dx.doi.org/10.1002/(sici)1099-159x(199607/08)4:4<295::aid-pip136>3.0.co;2-c.

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TER HORST, E. W. "GRID-CONNECTED PV SYSTEMS -THE ROLE OF THE UTILITY SECTOR." International Journal of Solar Energy 15, no. 1-4 (April 1994): 123–27. http://dx.doi.org/10.1080/01425919408909826.

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Gómez-Lorente, Daniel, Isaac Triguero, Consolación Gil, and A. Espín Estrella. "Evolutionary algorithms for the design of grid-connected PV-systems." Expert Systems with Applications 39, no. 9 (July 2012): 8086–94. http://dx.doi.org/10.1016/j.eswa.2012.01.159.

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Ahmed, Mostafa, Mohamed Abdelrahem, Ahmed Farhan, Ibrahim Harbi, and Ralph Kennel. "DC-link sensorless control strategy for grid-connected PV systems." Electrical Engineering 103, no. 5 (February 24, 2021): 2345–55. http://dx.doi.org/10.1007/s00202-021-01228-2.

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AbstractSensorless strategies become very popular in modern control techniques because they increase the system reliability. Besides, they can be used as back-up control in case of sensor failure. In this paper, a DC-link sensorless control approach is developed, which is suited for grid-connected PV systems. The studied system is a two-stage PV scheme, where the DC–DC stage (boost converter) is controlled using an adaptive step-size perturb and observe (P&O) method. Further, the inverter control is accomplished by voltage oriented control (VOC). Generally, the VOC is implemented with two cascaded control loops, namely an outer voltage loop and an inner current loop. However, in this work, the outer loop is avoided and the reference current is generated using a losses model for the system. The losses model accounts for the most significant losses in the PV system. Moreover, particle swarm optimization (PSO) is utilized to compensate for the unmodeled losses. The PSO is executed offline for the purpose of calculation burden reduction. The proposed approach simplifies the cascaded VOC strategy and eliminates the DC-link voltage sensor, which in turn decreases the cost of the system. Finally, the proposed technique is compared with the conventional one at different atmospheric conditions and validated using MATLAB simulation results.

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Bighash, Esmaeil Zangeneh, Seyed Mohammad Sadeghzadeh, Esmaeil Ebrahimzadeh, and Frede Blaabjerg. "Multi-function control of small-scaled grid-connected PV systems." International Journal of Power Electronics 14, no. 2 (2021): 239. http://dx.doi.org/10.1504/ijpelec.2021.117067.

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Blaabjerg, Frede, Esmaeil Zangeneh Bighash, Esmaeil Ebrahimzadeh, and Seyed Mohammad Sadeghzadeh. "Multi-function control of small-scaled grid-connected PV systems." International Journal of Power Electronics 14, no. 2 (2021): 239. http://dx.doi.org/10.1504/ijpelec.2021.10039549.

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Muhammad, N., H. Zainuddin, E. Jaaper, and Z. Idrus. "An early fault detection approach in grid-connected photovoltaic (GCPV) system." Indonesian Journal of Electrical Engineering and Computer Science 17, no. 2 (February 1, 2020): 671. http://dx.doi.org/10.11591/ijeecs.v17.i2.pp671-679.

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Faults in any components of PV system shall lead to performance degradation and if prolonged, it can leads to fire hazard. This paper presents an approach of early fault detection via acquired historical data sets of grid-connected PV (GCPV) systems. The approach is a developed algorithm comprises of failure detection on AC power by using Acceptance Ratio (AR) determination. Specifically, the implemented failure detection stage was based on the algorithm that detected differences between the actual and predicted AC power of PV system. Furthermore, the identified alarm of system failure was a decision stage which performed a process based on developed logic and decision trees. The results obtained by comparing two types of GCPV system (polycrystalline and monocrystalline silicon PV system), showed that the developed algorithm could perceive the early faults upon their occurrence. Finally, when applying AR to the PV systems, the faulty PV system demonstrated 93.38 % of AR below 0.9, while the fault free PV system showed only 31.4 % of AR below 0.9.

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Kotsopoulos, A., P. J. M. Heskes, and M. J. Jansen. "Zero-Crossing Distortion in Grid-Connected PV Inverters." IEEE Transactions on Industrial Electronics 52, no. 2 (April 2005): 558–65. http://dx.doi.org/10.1109/tie.2005.844254.

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Rangarajan, Shriram Srinivasarangan, E. Randolph Collins, J. Curtiss Fox, and D. P. Kothari. "Consolidated compendium of PV interconnection standards and guidelines across the globe in a smart grid." Journal of Energy Technology Research 2, no. 1 (May 19, 2018): 1. http://dx.doi.org/10.22496/jetr.v2i1.113.

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The environmental concerns and shortage in conventional energy has paved the way for utilizing renewable energy resources like photovoltaic energy (PV). As the grid is becoming smarter, the complexity associated with the conventional power system network has gone up with increased renewable energy penetration. Safety factor and reliable interconnection of various photovoltaic generators has become a major challenge in the smart grid environment. The ramifications associated with the PV interconnection needs an adherence to reliable operation of the grid without any violations. Standards or guidelines for grid-connected photovoltaic generation systems play a vital role in the PV interconnection. Several organizations and technical committees are constantly involved in research to update and revise such standards on a frequent basis throughout the world. The focus of this paper is to realize a consolidated compilation of PV interconnection standards across the globe. This survey will serve as a reference for improving standards for grid-connected PV systems in a smart grid environment.

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Marino, Concettina, Antonino Nucara, Maria Francesca Panzera, Matilde Pietrafesa, and Alfredo Pudano. "Economic Comparison Between a Stand-Alone and a Grid Connected PV System vs. Grid Distance." Energies 13, no. 15 (July 27, 2020): 3846. http://dx.doi.org/10.3390/en13153846.

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The limitation of fossil fuel uses and GHG (greenhouse gases) emissions reduction are two of the main objectives of the European energy policy and global agreements that aim to contain climate changes. To this end, the building sector, responsible for important energy consumption rates, requires a significant improvement of its energetic performance, an obtainable increase of its energy efficiency and the use of renewable sources. Within this framework, in this study, we analysed the economic feasibility of a stand-alone photovoltaic (PV) plant, dimensioned in two configurations with decreasing autonomy. Their Net Present Value at the end of their life span was compared with that of the same plant in both grid-connected and storage-on-grid configurations, as well as being compared with a grid connection without PV. The analysis confirms that currently, for short distances from the grid, the most suitable PV configuration is the grid-connected one, but also that the additional use of a battery with a limited capacity (storage on grid configuration) would provide interesting savings to the user, guaranteeing a fairly energetic autonomy. Stand-alone PV systems are only convenient for the analysed site from distances of the order of 5 km, and it is worth noting that such a configuration is neither energetically nor economically sustainable due to the necessary over-dimensioning of both its generators and batteries, which generates a surplus of energy production that cannot be used elsewhere and implies a dramatic cost increase and no corresponding benefits. The results have been tested for different latitudes, confirming what we found. A future drop of both batteries’ and PV generators’ prices would let the economic side of PV stand-alone systems be reconsidered, but not their energetic one, so that their use, allowing energy exchanges, results in being more appropriate for district networks. For all PV systems, avoided emissions of both local and GHG gases (CO2) have been estimated.

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Camur, H., Y. Kassem, and E. Alessi. "A Techno-Economic Comparative Study of a Grid-Connected Residential Rooftop PV Panel: The Case Study of Nahr El-Bared, Lebanon." Engineering, Technology & Applied Science Research 11, no. 2 (April 11, 2021): 6956–64. http://dx.doi.org/10.48084/etasr.4078.

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Lebanon suffers from daily electricity shortages. The country has paid much attention to renewable energy sources, particularly solar, to gradually replace conventional energy. Installing a photovoltaic (PV) system becomes increasingly attractive for residential consumers due to the rising electricity tariff rates while it reduces the dependency on domestic power generators. No known study has dealt with the investigation of potential grid-connected rooftop PV systems with various sun-tracking modes and PV technologies in Nahr El-Bared, Lebanon. Consequently, the main objective of the current paper is to investigate the feasibility of a 5kW grid-connected PV system of various technologies (mono-crystalline silicon and poly-crystalline silicon) and sun-tracking modes including fixed tilt and 2-axis systems for rooftop households in Lebanon. The Nahr El-Bared camp was the case study was of the paper. RETScreen Expert software was used to evaluate the techno-economic performance of the proposed systems. The results show that the annual electrical energy from a fixed 5kW PV panel tilted at an optimal angle ranged from 8564.47kWh to 8776.81kWh, while the annual electrical energy from the PV tracking system was within the range of 11511.67-12100.92kWh. This amount of energy output would contribute significantly to reduce the energy shortage in the country. A typical household was selected to establish a load profile and load supply during both grid availability and outage periods. The highest energy consumption that can be covered by the PV systems was recorded during the spring and summer seasons. Also, the average energy production cost ranged from 0.0239 to 0.0243$/kWh for all the proposed systems. It was concluded that a 5kW grid-connected rooftop PV system could be economically justifiable. Finally, this study tried to increase the awareness about utilizing PV sun-tracking systems and the feasibility of small-scale grid-connected rooftop PV systems in the selected regions. The results of this research can help investors in the energy and building sectors.

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Sayed, A., M. El-Shimy, M. El-Metwally, and M. Elshahed. "Reliability, Availability and Maintainability Analysis for Grid-Connected Solar Photovoltaic Systems." Energies 12, no. 7 (March 28, 2019): 1213. http://dx.doi.org/10.3390/en12071213.

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Recently, solar power generation is significantly contributed to growing renewable sources of electricity all over the world. The reliability and availability improvement of solar photovoltaic (PV) systems has become a critical area of interest for researchers. Reliability, availability, and maintainability (RAM) is an engineering tool used to address operational and safety issues of systems. It aims to identify the weakest areas of a system which will improve the overall system reliability. In this paper, RAM analysis of grid-connected solar-PV system is presented. Elaborate RAM analysis of these systems is presented starting from the sub-assembly level to the subsystem level, then the overall system. Further, an improved Reliability Block Diagram is presented to estimate the RAM performance of seven practical grid-connected solar-PV systems. The required input data are obtained from worldwide databases of failures, and repair of various subassemblies comprising various meteorological conditions. A novel approach is also presented in order to estimate the best probability density function for each sub-assembly. The monitoring of the critical subassemblies of a PV system will increase the possibility not only for improving the availability of the system, but also to optimize the maintenance costs. Additionally, it will inform the operators about the status of the various subsystems of the system.

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Roumpakias, Elias, and Tassos Stamatelos. "Surface Dust and Aerosol Effects on the Performance of Grid-Connected Photovoltaic Systems." Sustainability 12, no. 2 (January 11, 2020): 569. http://dx.doi.org/10.3390/su12020569.

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A large number of grid-connected Photovoltaic parks of different scales have been operating worldwide for more than two decades. Systems’ performance varies with time, and an important factor that influences PV performance is dust and ambient aerosols. Dust accumulation has significant effects depending the region, and—on the other hand—understanding the role of absorption or scattering in particular wavelengths from aerosols is a challenging task. This paper focuses on performance analysis of a grid-connected PV system in Central Greece, aiming to study these effects. The methodology of analysis follows three directions, namely, PR computations, use of mathematical model’s prediction as reference value, and normalized efficiency calculation. These metrics are correlated with the levels of dust accumulation on PV panels’ surfaces and the ambient aerosol mass concentration. The results show that only heavily soiled surfaces have significant impact on PV performance and, particularly, a decrease of 5.6%. On the other hand, light or medium soiling have negligible impact on PV performance. On the other hand, the impact of ambient aerosol concentration levels on PV efficiency is more complex and requires further study. Aerosol scattering of different wavelengths can possibly affect PV efficiency, however, this fact may be related to the specific spectral response of PV cells.

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Journal articles on the topic 'Grid-connected PV systems'

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