Journal articles: 'Grid tied solar inverters'

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Kavya Santhoshi, B., K. Mohana Sundaram, Sanjeevikumar Padmanaban, Jens Bo Holm-Nielsen, and Prabhakaran K. K. "Critical Review of PV Grid-Tied Inverters." Energies 12, no. 10 (2019): 1921. http://dx.doi.org/10.3390/en12101921.

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Solar Photovoltaic (PV) systems have been in use predominantly since the last decade. Inverter fed PV grid topologies are being used prominently to meet power requirements and to insert renewable forms of energy into power grids. At present, coping with growing electricity demands is a major challenge. This paper presents a detailed review of topological advancements in PV-Grid Tied Inverters along with the advantages, disadvantages and main features of each. The different types of inverters used in the literature in this context are presented. Reactive power is one of the ancillary services provided by PV. It is recommended that reactive power from the inverter to grid be injected for reactive power compensation in localized networks. This practice is being implemented in many countries, and researchers have been trying to find an optimal way of injecting reactive power into grids considering grid codes and requirements. Keeping in mind the importance of grid codes and standards, a review of grid integration, the popular configurations available in literature, Synchronization methods and standards is presented, citing the key features of each kind. For successful integration with a grid, coordination between the support devices used for reactive power compensation and their optimal reactive power capacity is important for stability in grid power. Hence, the most important and recommended intelligent algorithms for the optimization and proper coordination are peer reviewed and presented. Thus, an overview of Solar PV energy-fed inverters connected to the grid is presented in this paper, which can serve as a guide for researchers and policymakers.

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Babu, Bandla Pavan, V. Indragandhi, R. RajaSingh, and Ramani Kannan. "Design Approach of Grid Coupled Solar Inverter." MATEC Web of Conferences 225 (2018): 06001. http://dx.doi.org/10.1051/matecconf/201822506001.

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In novel times, more demands are gained by grid connected solar inverters along with the upgrading of the solar energy generation. In grid connected solar power generation, if there is increase in placing more number of solar inverters it may result in effecting the power quality issues. Solar Grid Tied Inverter system is a electrical power generating system that is coupled to the functioning power grid. This power generating system unit consists of elements like Photovoltaic array, DC to DC converter, DC to AC converter, single phase/three phase converter, and AC Source. The inverter converts DC power generated by the array of photovoltaic cells into AC power and this generated AC power is fed to the connected AC loads. If the amount power generation is exceeding the power demanded, excess AC power is supplied to the grid. With this novel approach we can minimize the use of the AC power from the power grid and also even make a generation to the power grid and this is measured with help of net metering. In this paper designing of 281.6Kw grid tied solar power generation and technical specifications required for them are proposed.

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Saravanan, V., M. Aravindan, V. Balaji, and M. Arumugam. "Z Source Inverter Topologies-A Survey." Bulletin of Electrical Engineering and Informatics 6, no. 1 (2017): 1–12. http://dx.doi.org/10.11591/eei.v6i1.579.

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Need for alternative energy sources to satisfy the rising demand in energy consumption elicited the research in the area of power converters/inverters. An increasing interest of using Z source inverter/converter in power generation involving renewable energy sources like wind and solar energy for both off grid and grid tied schemes were originated from 2003. This paper surveys the literature of Z source inverters/converter topologies that were developed over the years.

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Khorwal, Harish, and Mrs Madhu Upadhyay. "Descriptive Study of Renewable Energy System for Reactive Power Injection and AI Techniques." SMART MOVES JOURNAL IJOSCIENCE 6, no. 1 (2020): 4. http://dx.doi.org/10.24113/ijo-science.v6i1.249.

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Solar Photovoltaic (PV) systems have been in use predominantly since the last decade. Inverter fed PV grid topologies are being used prominently to meet power requirements and to insert renewable forms of energy into power grids. At present, coping with growing electricity demands is a major challenge. This paper presents a detailed review of topological advancements in PV-Grid Tied Inverters along with the advantages, disadvantages and main features of each. The different types of inverters used in the literature in this context are presented. Reactive power is one of the ancillary services provided by PV. It is recommended that reactive power from the inverter to grid be injected for reactive power compensation in localized networks. For successful integration with a grid, coordination between the support devices used for reactive power compensation and their optimal reactive power capacity is important for stability in grid power.

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Khorwal, Harish, and Mrs Madhu Upadhyay. "Descriptive Study of Renewable Energy System for Reactive Power Injection and AI Techniques." SMART MOVES JOURNAL IJOSCIENCE 6, no. 1 (2020): 37–39. http://dx.doi.org/10.24113/ijoscience.v6i1.249.

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Solar Photovoltaic (PV) systems have been in use predominantly since the last decade. Inverter fed PV grid topologies are being used prominently to meet power requirements and to insert renewable forms of energy into power grids. At present, coping with growing electricity demands is a major challenge. This paper presents a detailed review of topological advancements in PV-Grid Tied Inverters along with the advantages, disadvantages and main features of each. The different types of inverters used in the literature in this context are presented. Reactive power is one of the ancillary services provided by PV. It is recommended that reactive power from the inverter to grid be injected for reactive power compensation in localized networks. For successful integration with a grid, coordination between the support devices used for reactive power compensation and their optimal reactive power capacity is important for stability in grid power.

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Khan, M. Rezwan, and Intekhab Alam. "A Solar PV-Based Inverter-Less Grid-Integrated Cooking Solution for Low-Cost Clean Cooking." Energies 13, no. 20 (2020): 5507. http://dx.doi.org/10.3390/en13205507.

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The cost of solar PV has been reduced to a level such that the levelized cost of solar electricity is either cheaper or competitive relative to the grid electricity. So, a low-cost integration of solar PV with grid can be a cost-effective solution for clean cooking. The usual technique of using grid-tied inverters contribute ~20% towards the energy cost. The proposed system incorporates a control circuit that connects grid electricity to the solar PV via a DC link and provides a DC output eliminating the requirement of grid-tied inverters. Most of the cooking utensils either have a resistive heating element or an electronic control circuit that is insensitive to input AC or DC and no modification is needed for the cooking utensils while using with DC voltage. In the proposed system, preference for power delivery is always given to the solar PV and the grid effectively operates as the backup for the system when solar PV output fluctuates due to varying weather and climatic conditions. As the absence of a grid-tied inverter in the system restricts the excess solar energy to be transferred to the grid, some kind of energy storage device is essential to run the system efficiently. A novel idea of storing solar PV energy in the form of hot water has been presented in this paper, with a cost-effective clean cooking concept. A simple and low-cost heat preservation technique has been suggested that requires a minimal change in habit for the users. Experimental results with multiple cooking utensils and foods have been presented and energy cost for cooking has been found to be as low as 4.75 USD/month, which is significantly lower (32%) than that of the grid-connected regular cooking system.

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Wang, Tai-Hung, Huang-Jen Chiu, Yu-Kang Lo, and Yu-Chen Liu. "A cascode-circuit configuration for grid-tied solar micro-inverters." Journal of the Chinese Institute of Engineers 38, no. 8 (2015): 1067–79. http://dx.doi.org/10.1080/02533839.2015.1064782.

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Zeb, Kamran, Imran Khan, Waqar Uddin, et al. "A Review on Recent Advances and Future Trends of Transformerless Inverter Structures for Single-Phase Grid-Connected Photovoltaic Systems." Energies 11, no. 8 (2018): 1968. http://dx.doi.org/10.3390/en11081968.

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The research significance of various scientific aspects of photovoltaic (PV) systems has increased over the past decade. Grid-tied inverters the vital elements for the effective interface of Renewable Energy Resources (RER) and utility in the distributed generation system. Currently, Single-Phase Transformerless Grid-Connected Photovoltaic (SPTG-CPV) inverters (1–10 kW) are undergoing further developments, with new designs, and interest of the solar market. In comparison to the transformer (TR) Galvanic Isolation (GI)-based inverters, its advantageous features are lower cost, lighter weight, smaller volume, higher efficiency, and less complexity. In this paper, a review of SPTG-CPV inverters has been carried out. The basic operational principles of all SPTG-CPV inverters are presented in details for positive, negative, and zero cycles. A comprehensive analysis of each topology has been deliberated. A comparative assessment is also performed based on weaknesses, strengths, component ratings, efficiency, total harmonic distortion (THD), semiconductor device losses, and leakage current of various SPTG-CPV inverters schemes. Typical PV inverter structures and control schemes for grid connected three-phase system and single-phase systems are also discussed, described, and reviewed. Comparison of various industrial grids-connected PV inverters is also performed. Loss analysis is also performed for various topologies at 1 kW. Selection of appropriate topologies for their particular application is thoroughly presented. Then, discussion and forthcoming progress are emphasized. Lastly, the conclusions are presented. More than 100 research publications on the topic of SPTG-CPV inverter topologies, configurations, and control schematics along with the recent developments are thoroughly reviewed and classified for quick reference.

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Almousawi, A. Q., and A. Aldair. "Control Strategies for Grid-Tied Inverters Based on Photovoltaic Solar Systems." IOP Conference Series: Materials Science and Engineering 1067, no. 1 (2021): 012125. http://dx.doi.org/10.1088/1757-899x/1067/1/012125.

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Raja Mohamed, S., P. Aruna Jeyanthy, and D. Devaraj. "Hysteresis-based Voltage and Current Control Techniques for Grid Connected Solar Photovoltaic Systems: Comparative Study." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 5 (2018): 2671. http://dx.doi.org/10.11591/ijece.v8i5.pp2671-2681.

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Solar PV system development and integration with existing grid is very fast in recent years all over the world, as they require limited maintenance, pollution free and simple structure. When observing the factors affecting the performance of the grid connected solar photovoltaic system, the inverter output voltage with harmonics add with the harmonics generated due to the non-linear loads, retain a bigger challenge to maintain power quality in the grid. To maintain grid power quality, better inverter control technique should be developed. This paper presents the two control techniques for grid-tied inverters. This study developed the hysteresis controller for the inverter. Hysteresis controller used in this work two way (i) Voltage control mode (ii) Current control mode. Matlab/Simulink model is developed for the proposed system. Further the study presents the comparative evaluation of the performance of both control techniques based on the percentage of total harmonic distortion (THD) with the limits specified by the standards such as IEEE 1547 and IEC 61727 and IEEE Std 519-2014

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Fursin, Leonid, Frank Hoffmann, John Hostetler, et al. "Development of High-Voltage 4H-SiC GTOs for Grid-Tied Solar Inverters." Materials Science Forum 740-742 (January 2013): 982–85. http://dx.doi.org/10.4028/www.scientific.net/msf.740-742.982.

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A growing demand for smart and flexible photovoltaic power conversion and pulsed-power systems is leading to rapid development and commercialization of medium voltage 6.5 - 24 kV, wide-bang gap rectifiers and switches. Conventional silicon bipolar switches are limited to roughly 8 kV breakdown voltages and scaling up the voltage rating requires very thick wafers presenting significant manufacturing challenges. Very thick drift layers of silicon devices also translate into a very high minority carrier charge injected during forward conduction for an efficient conductivity modulation, hence leading to an extremely slow switching speed and poor efficiency. In this paper USCi presents the development of 6.5 kV 4H-SiC gate-turn-off thyristors (GTOs) with multiple floating guard-ring edge termination, and describes their application in an AC-link grid-tied solar inverter system.

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Verma, Usha, and N. K. Singh. "Simulation and Implementation of Grid Tied Solar Photovoltaic System with Fuzzy Control Based Universal Bridge Inverter." SMART MOVES JOURNAL IJOSCIENCE 6, no. 12 (2020): 5–12. http://dx.doi.org/10.24113/ijoscience.v6i12.332.

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Worldwide renewable energy resources, especially solar energy, are growing dramatically in view of energy shortage and environmental concerns. Large-scale solar photovoltaic (PV) systems are typically connected to medium voltage distribution grids, where power converters are required to convert solar energy into electricity in such a grid-interactive PV system. This study are designing of solar energy system in MATLABSIMULINK environment which can be integrated with the grid for its efficient operation. The grid integration is necessary to ace the system reliable under various environmental conditions. Enhancing the DC input voltage to the inverter so that in its aspect the AC output from the inverter is also enhanced. And designing of a universal bridge inverter and AI based intelligent control for it such that it enhances the power output from the solar PV system. Designing of efficient rules for the inverter control using FUZZY algorithm. This work proposes an optimized active power enhancement method and evaluates the effect of fuzzy based controller for power enhancement on system reliability and power quality in the grid-interactive PV system with cascaded converter modules. Fuzzy set of rules are defined in a manner such that it is proved to be effective in enhancing the current output keeping the grid voltage same and hence the power output from the systems of cascaded PV modules. it can be concluded that if designing a cascaded PV solar system it is possible to increase the active power output from the inverter just by using fuzzy set of rules for firing pulses in the inverter.

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Khan, M. N. H., K. J. Ahmad, M. S. Zahan, and M. N. Hasan. "Battery-Equivalent DC Supply from Leakage Current: PV to Transformer-less Inverter Topology." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 4 (2016): 1193. http://dx.doi.org/10.11591/ijpeds.v7.i4.pp1193-1199.

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Solar panels are highly used for electricity generation, which can be gotten through switching-based transformer-less inverters. Hence, grid system with no galvanic-isolation, is taking the peak level in the world, which is effective and delivers power with enhanced efficiency. The PV generation presented here is for stand-alone system installed in remote areas on when and as the resulting power gets connected to electronic load installation instead of being tied to the grid. In this paper will be discussed the use of leakage current. Transformer-less inverter topology for exploring the issue of common mode (CMV) voltage development, which can be utilized as a Battery-Equivalent DC Supply after adding on places as when found suitable for such installations.

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Agu, M. U., E. C. Ejiogu, D. B. N. Nnadi, and C. U. Eya. "A Grid Tied Short-Through Proof Solar PV Inverter." IOP Conference Series: Earth and Environmental Science 730, no. 1 (2021): 012017. http://dx.doi.org/10.1088/1755-1315/730/1/012017.

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Kumar, Atul, and Imran Khan. "Harmonics Analysis and Enhancement of Power Quality in Hybrid Photovoltaic and Wind power System for Linear and Nonlinear Load using 3 Levels Inverter." International Journal of Recent Technology and Engineering 10, no. 1 (2021): 296–307. http://dx.doi.org/10.35940/ijrte.d4915.0510121.

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The emergent use of non-conventional energy resources in electrical power grid has initiated new challenge for the service load as concern to voltage balance, power quality issues and effective energy operation. Solar/ wind hybrid RES deliberated as the furthermost promising sources. Nevertheless standalone operations of distributed energy sources such as solar and wind not make sure of reliable power production principally owing to the randomness over the solar irradiance and accessibility of the wind. Hence, a combination of wind and solar energy production configuration can plan a highly reliable source of electrical energy. In This article, multi-level inverter (3 levels inverter) based grid tied hybrid solar- wind energy system based on a 3 level inverter is presented with the mitigation of power quality problems. In this work, analysis on simulation model is conceded to determine source current and voltage and percentage of total harmonic distortion. In particular, the power quality analysis is performed in grid tied hybrid solar and wind electrical power system using 3 level inverter.

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Pilla, Ramana, Jallu Hareesh Kumar, and Adavipalli Chandana. "Grid Tied Photovoltaic System with Perturb and Observe Maximum Power Point Controller and LCL Filter." International Journal of Engineering & Technology 7, no. 3.6 (2018): 68. http://dx.doi.org/10.14419/ijet.v7i3.6.14941.

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This paper describes a grid tied photovoltaic (PV) system along with maximum power point tracking (MPPT) and LCL filter. A PV model is developed using mathematical equations of solar cell. This PV module is controlled and optimized with MPPT algorithm. The maximum power point (MPP) tracking is implemented using Perturb and Observe (P&O) algorithm from the solar array and given to DC-DC boost converter. The enhancement of unfettered PV Voltage is achieved using boost converter and also used to verify the precision of MPPT technique. Using inverter controller, the boost converter DC output voltage is converted into AC voltage. The phase and frequency of the grid is tracked using phase locked loop (PLL) to integrate the inverter with the grid. In addition to this, to diminish the harmonics in the inverter output an LCL filter is used. The performance of grid tied photovoltaic system is extensively simulated with MATLAB software.

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Das, Saurav, Dhiman Chowdhury, and Md Abdur Razzak. "System efficiency prediction of a 1kW capacity grid-tied photovoltaic inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 2 (2021): 1177. http://dx.doi.org/10.11591/ijpeds.v12.i2.pp1177-1186.

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This article presents the system design and prediction performance of a 1kW capacity grid-tied photovoltaic inverter applicable for low or medium-voltage electrical distri-bution networks. System parameters, for instance, the longitude and latitude of the solar plant location, panel orientation, tilt and azimuth angle calculation, feasibility testing, optimal sizing of installment are analyzed in the model and the utility is sim-ulated precisely to construct an efficient solar power plant for residential applications. In this paper, meteorological data are computed to discuss the impact of environmen-tal variables. As regards ensuring reliability and sustenance, a simulation model of the system of interest is tested in the PVsyst software package. Simulation results yield that the optimum energy injected to the national grid from the solar plant, specific pro-duction, and performance ratio are 1676kWh/year, 1552kWh/kWp/year, and 79.29% respectively. Moreover, the predicted carbon footprint reduction is 23.467 tons during the 30 years lifetime of the system. Therefore, the performance assessments affirm the effectiveness of the proposed research.

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Haq, Safa, Shuvra Prokash Biswas, Md Kamal Hosain, Md Ashib Rahman, Md Rabiul Islam, and Sumaya Jahan. "A Modular Multilevel Converter with an Advanced PWM Control Technique for Grid-Tied Photovoltaic System." Energies 14, no. 2 (2021): 331. http://dx.doi.org/10.3390/en14020331.

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Due to global warming and shortage of fossil fuels, the grid-connected solar photovoltaic (PV) system has gained significant popularity all over the world. The modular multilevel cascaded (MMC) inverter is the natural choice for step-up transformer and line filter less direct medium voltage grid integration of solar PV systems. However, power quality and loss are the important issues while connecting the PV system to the medium voltage grid through MMC inverter. Modulation technique is the key to maintain output power quality, e.g., total harmonic distortion (THD) and to ensure low switching and conduction losses. In this paper, an advanced modulation technique named “triangle saturated common mode pulse width modulation (TSCMPWM)” control is proposed for a 3-phase 5-level MMC inverter-based grid-tied PV system. Compared to traditional modulation techniques, the proposed TSCMPWM control offers the lowest voltage THD as well as lower inverter power losses. Performance of the proposed modulation technique is evaluated in MATLAB/Simulink environment and tested with a reduced scale prototype test platform. Both simulation and experimental results show the effectiveness of the proposed modulation technique.

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Haq, Safa, Shuvra Prokash Biswas, Md Kamal Hosain, Md Ashib Rahman, Md Rabiul Islam, and Sumaya Jahan. "A Modular Multilevel Converter with an Advanced PWM Control Technique for Grid-Tied Photovoltaic System." Energies 14, no. 2 (2021): 331. http://dx.doi.org/10.3390/en14020331.

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Due to global warming and shortage of fossil fuels, the grid-connected solar photovoltaic (PV) system has gained significant popularity all over the world. The modular multilevel cascaded (MMC) inverter is the natural choice for step-up transformer and line filter less direct medium voltage grid integration of solar PV systems. However, power quality and loss are the important issues while connecting the PV system to the medium voltage grid through MMC inverter. Modulation technique is the key to maintain output power quality, e.g., total harmonic distortion (THD) and to ensure low switching and conduction losses. In this paper, an advanced modulation technique named “triangle saturated common mode pulse width modulation (TSCMPWM)” control is proposed for a 3-phase 5-level MMC inverter-based grid-tied PV system. Compared to traditional modulation techniques, the proposed TSCMPWM control offers the lowest voltage THD as well as lower inverter power losses. Performance of the proposed modulation technique is evaluated in MATLAB/Simulink environment and tested with a reduced scale prototype test platform. Both simulation and experimental results show the effectiveness of the proposed modulation technique.

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Fomba, Ahmed Jumui Sumoi, Hermawan Hermawan, Trias Andromeda, Mochammad Facta, and Iwan Setiawan. "Simulation of Grid-Tied Photovoltaic System Based on Solar Irradiance and Temperature Data in Semarang." E3S Web of Conferences 125 (2019): 14006. http://dx.doi.org/10.1051/e3sconf/201912514006.

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This paper presents a simulation of a grid-connected photovoltaic power system. A complex model of power distribution system is developed in MATLAB Simulink, then it will be simulated to determine an amount of power delivered to the grid based on irradiance and temperature. Solar irradiance data collection is conducted using a solar irradiance meter. These weather data (solar irradiances and temperatures) are transformed into signal inputs and model through a grid-tied Photovoltaic (PV) model system which consists of PV, incremental conductance Maximum Power Point Tracking (MPPT) method, DC-DC boost converter, inverter, voltage source converter (VSC) control algorithms, and grid equipment. The output variables can be related to current, voltage or power. However, tracing of the current-voltage (I-V) characteristics or power-voltage (P-V) characteristics are the vital need to grid-tied PV system operation. Changes in solar irradiance and temperature imply changes in output variables. Detailed modelling of the effect of irradiance and temperature, on the parameters of the PV module and the output parameters will be discussed. With the aid of this model, one can have a feasible idea about the solar energy generation potential at given locations. This comprehensive model is simulated using MATLAB/Simulink software.

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Alhussainy, Abdullah Ali, and Thamar Saad Alquthami. "Power quality analysis of a large grid-tied solar photovoltaic system." Advances in Mechanical Engineering 12, no. 7 (2020): 168781402094467. http://dx.doi.org/10.1177/1687814020944670.

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Over the last decades, the deployment of large solar-based photovoltaic power plants has grown tremendously. The undesirable impact of high integration level of photovoltaic systems has led energy stakeholders to regulate such penetration to avoid this negative impact. One major concern with regard to photovoltaic penetration is the issue of power quality. Poor power quality can be a source of system disturbance and major economic losses. However, the power quality analysis is not widely discussed in the literature, with most of the studies focusing on the harmonic issues as potential power quality problem, but this study shows that there are a number of power quality issues, such as undervoltage, overvoltage, power fluctuation, and power factor. This study presents practical approaches to a grid-connected solar photovoltaic plant with associated control circuits developed in the time-domain. The power quality of a grid-connected solar photovoltaic plant is investigated by an analysis of the inverter output voltage and nominal current for different photovoltaic plant sizes. Also, the effect of different conditions of solar irradiance and ambient temperature on the power quality is analyzed. To identify power quality issues, a photovoltaic plant time-domain model is developed using Power Systems Computer Aided Design software. Various solar photovoltaic plant controls such as maximum power point tracking and modulation signals sinusoidal pulse width modulation and pulse width modulation for direct current-to-direct current boost converter are developed and integrated into the simulation environment. Several case studies are performed taking into account different photovoltaic plant ratings such as 250 kW–3 MW, where the point of common coupling is monitored.

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Yaqoob, Salam Jabr, and Adel A. Obed. "An Efficient Grid-tied Flyback Micro-inverter with DCM Control Strategy." Journal of Techniques 3, no. 1 (2021): 74–84. http://dx.doi.org/10.51173/jt.v3i1.289.

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In two-stage micro-inverter photovoltaic (PV) applications, DC/DC converter is used to obtain the highest DC power from the PV module. In this type of inverter, the rising of voltage from the PV module to a grid voltage level is limited to a certain value. Moreover, the absence of the isolation between the input and output makes it is less efficient. For these reasons, an efficient single-stage grid-tied flyback PV micro-inverter with discontinuous conduction mode (DCM) control strategy is proposed to feed an alternating current (AC) to the main grid with a lower value of the total harmonic distortion (THD). The control strategy is based on a sine sinusoidal pulse width modulation (SPWM) technique to control the main switch of flyback inverter. Also, a simple perturb and observe (P&O) maximum power point tracking (MPPT) technique has been presented to obtain the MPP point from the PV module for any environmental conditions. The proposed control was verified using PSIM software and simulation results is obtained. The proposed control is tested under different weather conditions for solar irradiance and temperature, as a result, a pure sin wave current has been injected into the grid with a lower harmonics value. Finally, the small size, low cost and high reliability of single stage flyback micro-inverter is presented without the need for DC/DC converter.

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Nouaiti, A., A. Mesbahi, A. Saad, M. Khafallah, and M. Reddak. "Realization of a Single-Phase Multilevel Inverter for Grid-Connected Photovoltaic System." Engineering, Technology & Applied Science Research 8, no. 5 (2018): 3344–49. http://dx.doi.org/10.48084/etasr.2247.

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This paper introduces the implementation of a single-phase multilevel inverter for a grid-connected photovoltaic system. The considered topology contains a full bridge converter tied to an auxiliary circuit made of two power switches. A proportional integral (PI) current controller is established with this inverter to inject a sinusoidal current into the grid with a power factor near to unity. The studied system is tested on Matlab/Simulink and verified by experiment through a test bench comprising of a fabricated prototype and a DSP TMS320F28379D. The obtained results prove the efficiency of the inverter to maintain a direct power flow from DC sources, such as solar panels, to the grid by respecting some normalized criteria for this operation.

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Das, Moumita, Monidipa Pal, and Vivek Agarwal. "Novel High Gain, High Efficiency DC–DC Converter Suitable for Solar PV Module Integration With Three-Phase Grid Tied Inverters." IEEE Journal of Photovoltaics 9, no. 2 (2019): 528–37. http://dx.doi.org/10.1109/jphotov.2018.2877006.

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Ali, Ahmed Ismail M., Takaharu Takeshita, and Mahmoud A. Sayed. "Three-Phase PWM Inverter for Isolated Grid-Connected Renewable Energy Applications." Energies 14, no. 12 (2021): 3701. http://dx.doi.org/10.3390/en14123701.

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This paper proposes a three-phase isolated flyback inverter (IFBI) for single-stage grid-tied solar PV applications, considering a simple sinusoidal pulse-width modulation (SPWM) scheme. The proposed single-stage inverter employs a reduced passive elements count by considering three input-parallel output-differential (IPOD) flyback converter modules. Additionally, a single small size LC-input low-pass filter is utilized at the input paralleling point for ripple-free input current operation, which is essential in grid-connected renewable energy applications. In addition, a mathematical model of the IFBI is presented to confirm the existence of its low-order harmonic components. A simple PI controller-based control scheme, considering only two loops and five sensors, is used to control the proposed grid-tied IFBI. Continuous modulation scheme (CMS) combined with SPWM is used to diminish the low-frequency harmonic components. Moreover, a simple selective harmonic elimination (SHE) loop is used for second-order harmonic components (SOHC) elimination from grid-injected currents. The SHE has decreased the SOHC from 43% to 0.96%, which improves the grid current THD from 39% to 3.65%, to follow the IEEE harmonic standard limits. Additionally, the harmonic elimination technique decreases the circulating power between the inverter paralleled modules, which enhances the grid currents power factor. The proposed inverter is verified through a grid-connected 200 V, 1.6 kW, 60 Hz experimental prototype, and the switching frequency is 50 kHz. TMS-based DSP controller is used to control the grid-injected power to follow the reference power set-point.

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Jahan, Sumaya, Shuvra Prokash Biswas, Md Kamal Hosain, et al. "An Advanced Control Technique for Power Quality Improvement of Grid-Tied Multilevel Inverter." Sustainability 13, no. 2 (2021): 505. http://dx.doi.org/10.3390/su13020505.

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The use of different control techniques has become very popular for controlling the performance of grid-connected photovoltaic (PV) systems. Although the proportional-integral (PI) control technique is very popular, there are some difficulties such as less stability, slow dynamic response, low reference tracking capability, and lower output power quality in solar PV applications. In this paper, a robust, fast, and dynamic proportional-integral resonance controller with a harmonic and lead compensator (PIR + HC + LC) is proposed to control the current of a 15-level neutral-point-clamped (NPC) multilevel inverter. The proposed controlled is basically a proportional-integral resonance (PIR) controller with the feedback of a harmonic compensator and a lead compensator. The performance of the proposed controller is analyzed in a MATLAB/Simulink environment. The simulation result represents admirable performance in terms of stability, sudden load change response, fault handling capability, reference tracking capability, and total harmonic distortion (THD) than those of the existing controllers. The responses of the inverter and grid outlets under different conditions are also analyzed. The harmonic compensator decreases the lower order harmonics of grid voltage and current, and the lead compensator provides the phase lead. It is expected that the proposed controller is a dynamic aspirant in the grid-connected PV system.

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Jahan, Sumaya, Shuvra Prokash Biswas, Md Kamal Hosain, et al. "An Advanced Control Technique for Power Quality Improvement of Grid-Tied Multilevel Inverter." Sustainability 13, no. 2 (2021): 505. http://dx.doi.org/10.3390/su13020505.

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The use of different control techniques has become very popular for controlling the performance of grid-connected photovoltaic (PV) systems. Although the proportional-integral (PI) control technique is very popular, there are some difficulties such as less stability, slow dynamic response, low reference tracking capability, and lower output power quality in solar PV applications. In this paper, a robust, fast, and dynamic proportional-integral resonance controller with a harmonic and lead compensator (PIR + HC + LC) is proposed to control the current of a 15-level neutral-point-clamped (NPC) multilevel inverter. The proposed controlled is basically a proportional-integral resonance (PIR) controller with the feedback of a harmonic compensator and a lead compensator. The performance of the proposed controller is analyzed in a MATLAB/Simulink environment. The simulation result represents admirable performance in terms of stability, sudden load change response, fault handling capability, reference tracking capability, and total harmonic distortion (THD) than those of the existing controllers. The responses of the inverter and grid outlets under different conditions are also analyzed. The harmonic compensator decreases the lower order harmonics of grid voltage and current, and the lead compensator provides the phase lead. It is expected that the proposed controller is a dynamic aspirant in the grid-connected PV system.

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Singh, Arvind Kumar, and Prof M. S. Jamil Asghar. "Simulation and Experimental Analysis of Microcontroller based Grid Tied Inverter for Solar PV Applications." International Journal of Engineering Research and Applications 07, no. 07 (2017): 01–07. http://dx.doi.org/10.9790/9622-0707070107.

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Hasan, Murtadha Jasim. "Modeling and simulation of 1kw single phase grid tied inverter for solar photovoltaic system." IOP Conference Series: Materials Science and Engineering 881 (August 11, 2020): 012139. http://dx.doi.org/10.1088/1757-899x/881/1/012139.

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Bedeloğlu, Merve, Niyazi İl, Kayhan Ateş, and Şükrü Özen. "MEASUREMENT AND ANALYSIS OF ELECTRIC AND MAGNETIC FIELD STRENGTH IN GRID-TIED PHOTOVOLTAIC POWER SYSTEM COMPONENTS." Radiation Protection Dosimetry 194, no. 1 (2021): 57–64. http://dx.doi.org/10.1093/rpd/ncab070.

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Abstract In this study, electric field and magnetic field strengths at 50 Hz are measured in a solar power plant located far from residential areas, and the measurement results near various sources of the electric and magnetic fields in the power plant are presented. Although the measured values for the electric field caused by the solar panel range between 0.07 and 1.33 V/m, the measured values for the magnetic field by the solar panel range between 0.037 and 0.19 μT. In front of the inverter, the measured value of the electric field reaches 0.7 V/m, whereas the measured value of the magnetic field reaches 2.2 μT. The results are presented and evaluated in light of the exposure limits to electromagnetic fields published by international organisations.

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Elgamal, Mohamed, Nikolay V. Korovkin, Ahmed Refaat, and Akram Elmitwally. "Optimal operation of a hybrid-energy microgrid with energy storage system." E3S Web of Conferences 138 (2019): 01003. http://dx.doi.org/10.1051/e3sconf/201913801003.

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In this paper, a day-ahead profit-maximizing energy management scheme for a grid-tied microgrid operation is proposed. The microgrid contains various types of distributed energy resources (DERs) and an inverter-interfaced battery-bank storage system. The average of day-ahead hourly forecasted data for loads, wind speed, and solar radiation are inputted into the framework of energy management (EMF). To optimize the microgrid performance, EMF determines the hourly dispatch of reactive and active power for each DER. Also, it specifies the discharging and charging times of the energy storage system and the onload tap changer position setting of the transformer connected to the main grid. The main aim is to maximize the revenue of microgrid meeting all technical limitations. The main grid can sell/buy reactive and active powers to/from the microgrid with a variable daily energy price of the market. A collective rule base-BAT algorithm is implemented as a solver of the energy management optimization problem for a grid-tided microgrid. Furthermore, the ability of the suggested EMF is proved in comparison with recent approaches.

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Khorwal, Harish, and Mrs Madhu Upadhyay. "Optimum Controller Design Go Overall Quality Enhancement of System with Hybrid Renewable Energy Sources." SMART MOVES JOURNAL IJOSCIENCE 6, no. 4 (2020): 10. http://dx.doi.org/10.24113/ijoscience.v6i4.285.

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Grid-tied photovoltaic systems are power-generating systems that are connected with grids. Designing of a grid integrated solar wind hybrid energy system for driving loads for improving its reliability and efficiency. This study of designing an inverter control that attains lower distortion level in the voltage as well as current waveforms. The controller should reduce the spikes at the transient loading point when the system is subjected to sudden load changes. The system is to be integrated with the fuel system also to obtain the energy efficiency. The fuel system would be connected in parallel to the DC voltage output of the solar/wind hybrid system. And Improvement in the reactive power output from the system by the inverter control by designed hybrid system that can compensate the reactive power requirement when required. This project should attain the hybrid solar/wind/fuel system with proposed controller to improve the output parameters. The final hybrid system with fuel cell integration was studied for the total harmonic distortion in the voltage and current waveform. The distortion level in the voltage waveform was found to be 0.39% and that in the current waveform was 1.95%. It is under the IEEE acceptable limits.

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AYACHI AMOR, Yacine, Frid HAMOUDI, and Aissa KHELDOUN. "Three-phase Three-level Inverter Grid-tied PV System with Fuzzy Logic Control based MPPT." Algerian Journal of Signals and Systems 3, no. 3 (2018): 96–105. http://dx.doi.org/10.51485/ajss.v3i3.65.

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This paper presents a three phase single stage grid connected photovoltaic PV system. Maximum power transfer from the solar array to grid is ensured by using fuzzy logic (FL) based maximum power point tracking (MPPT) controller. The proposed MPPT technique provides fast and high performances under variable climate conditions as well as sudden variation of irradiance level. Change of measured photovoltaic power and its rate of change are the input variables of the proposed fuzzy logic controller while the change in reference current is deﬁned as the output variable. In order to meet the power quality required by the international standards, a Space Vector Modulation (SVM) controlled three-level T-type inverter and a series LCL filter are used. To show the effectiveness of the proposed grid-connected system, Matlab/Simulink software is used to carry out the simulation part. Obtained results show the role of each component, particularly the response of the maximum power tracking, the quality of the injected power, the unity power factor operation and the system’s efficiency.

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Ghosh, Saikat Subhra, Kumaran S. Nathan, Yam P. Siwakoti, and Teng Long. "Dual polarity DC–DC converter integrated grid-tied single-phase transformer less inverter for solar application." Journal of Engineering 2019, no. 17 (2019): 3962–66. http://dx.doi.org/10.1049/joe.2018.8041.

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Venkatramanan, D., and Vinod John. "A Reconfigurable Solar Photovoltaic Grid-Tied Inverter Architecture for Enhanced Energy Access in Backup Power Applications." IEEE Transactions on Industrial Electronics 67, no. 12 (2020): 10531–41. http://dx.doi.org/10.1109/tie.2019.2960742.

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Ali, Ahmed Ismail M., Mahmoud A. Sayed, and Ahmed A. S. Mohamed. "Seven-Level Inverter with Reduced Switches for PV System Supporting Home-Grid and EV Charger." Energies 14, no. 9 (2021): 2718. http://dx.doi.org/10.3390/en14092718.

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This paper proposes a simple single-phase new pulse-width modulated seven-level inverter architecture for photovoltaic (PV) systems supporting home-grid with electric vehicle (EV) charging port. The proposed inverter includes a reduced number of power components and passive elements size, while showing less output-voltage total harmonic distortion (THD), and unity power factor operation. In addition, the proposed inverter requires simple control and switching strategies compared to recently published topologies. A comparative study was performed to compare the proposed inverter structure with the recent inverter topologies based on the number of components in the inverter circuit, number of components per output-voltage level, average number of active switches, THD, and operating efficiency as effective parameters for inverter performance evaluation. For design and validation purposes, numerical and analytical models for a grid-tied solar PV system driven by the proposed seven-level inverter were developed in MATLAB/Simulink environment. The inverter performance was evaluated considering grid-integration and stand-alone home with level-2 AC EV charger (3–6 kW). Compared with recently published topologies, the proposed inverter utilizes a reduced number of power components (7 switches) for seven-level terminal voltage synthesis. An experimental prototype for proposed inverter with the associated controller was built and tested for a stand-alone and grid-integrated system. Due to the lower number of ON-switches, the inverter operating efficiency was enhanced to 92.86% with load current THD of 3.43% that follows the IEEE standards for DER applications.

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Hizarci, Halime, Umit Pekperlak, and Ugur Arifoglu. "Conducted Emission Suppression Using an EMI Filter for Grid-Tied Three-Phase/Level T-Type Solar Inverter." IEEE Access 9 (2021): 67417–31. http://dx.doi.org/10.1109/access.2021.3077380.

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Wang, Yong, and Fei Wang. "Novel Three-Phase Three-Level-Stacked Neutral Point Clamped Grid-Tied Solar Inverter With a Split Phase Controller." IEEE Transactions on Power Electronics 28, no. 6 (2013): 2856–66. http://dx.doi.org/10.1109/tpel.2012.2226475.

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Paniyil, Prahaladh, Vishwas Powar, Rajendra Singh, et al. "Photovoltaics- and Battery-Based Power Network as Sustainable Source of Electric Power." Energies 13, no. 19 (2020): 5048. http://dx.doi.org/10.3390/en13195048.

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With the rise in the utilization of free fuel energy sources, namely solar and wind, across the globe, it has become necessary to study and implement models of a sustainable power network. This paper focuses on the design of a conceptual power network based on photovoltaics (PV) for power generation and lithium-ion batteries for storage. The power system showcases the various metrics that are involved in a grid-tied PV- and battery-based power network. It also encompasses the various design parameters and sizing considerations to design and conceptualize such a power network. The model focuses on the importance of the conservation of power by avoiding wastage of generated power through inverter sizing and design considerations. Finally, an economic and feasibility analysis is carried out to showcase the economic viability of the PV- and battery-based power network in today’s alternating current (AC)-based grid.

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Sekhar Mishra, Chandra, Ranjan Kumar Jena, and Soumya Ranjan Nayak. "PQ improvement of Micro-Grid by Using DG and Power Quality Conditioner with BESS." International Journal of Engineering & Technology 7, no. 2.32 (2018): 245. http://dx.doi.org/10.14419/ijet.v7i2.32.15577.

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DG Grid interfaced system has been focused through this paper. The objective is to improve power quality of the grid, which was polluted by various means. The improvement of power quality of the micro grid includes uses of a specially designed DG, BESS and Power Quality conditioner. The system consists of a two-stage power conversion. Solar PV supplies power for both DC and AC loads. Manufacturer datasheet is used for modeling the PV panel. In order to keep the BUS voltage stable a BESS is joined to DC BUS through power electronic converter, which is used to absorb the excess power whenever production is high and deliver power to the load on low production. The system continues to supply the local loads, incase of grid discontinuity. Thus it eliminates threats of islanding. This paper also focuses on control and stability of DC bus voltage and energy management scheme. The project uses Matlab/Simulink platform for efficient verification. For power quality improvement of Micro Grid it uses 3leg inverter, which is coupled with SPV and MPPT with Battery storage, which is used as compensator for the whole system. For prevention to reduce voltage current and power flow between DG and Grid, it is necessary to have an optimum control. Through the adjustment of power circulation between shunt paired DG ensures current voltage and power on micro grid. +ve, -ve and Zero sequence components of currents and voltage can be adjusted by the suggested methodology in Grid tied DG system. The said PQC have multiple uses. Firstly as a power converter and secondly as a shunt APF for harmonic compensation on voltage, current and power (both active and reactive) for both balanced and unbalanced loads in the Grid tied DG system. It also cares for the neutral conductor. Either individually or in grid connected mode all the above objectives can be achieved. For the entire Grid, it is realized that after compensation three phase four wired un-balance loads looks as balanced linear resistive load for the Grid. All these task significantly replicated on MATLAB/Simulink. After compensation the total harmonic distortion on input voltage and current reduced drastically. IEEE519 in the range of 5% suitably accepts it.

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Grgić, Ivan, Mateo Bašić, and Dinko Vukadinović. "Optimization of electricity production in a grid-tied solar power system with a three-phase quasi-Z-source inverter." Journal of Cleaner Production 221 (June 2019): 656–66. http://dx.doi.org/10.1016/j.jclepro.2019.02.245.

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Meenakshi Sundaram, B., B. V. Manikandan, and M. Kaliamoorthy. "Simulation of FPGA controlled Single Stage Boost Inverter for the Applications of Grid Connected Photovoltaic System." SIMULATION 93, no. 12 (2017): 1087–97. http://dx.doi.org/10.1177/0037549717705466.

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Improving the efficiency, reducing the cost and maintaining the power quality of a grid tied with Photovoltaic (PV) system are the important aspects of the present day research. The efficiency of power conversion can be improved by reducing the number of stages. In this paper, a single stage boost inverter topology fed from PV array is used and connected to a single phase grid. Less number of switching components is used in this topology compared to conventional technique and hence, the converter losses are reduced. This can also be very well extended to utility grid system. Further, the proposed topology includes battery backup unit which consists of a DC-DC converter to overcome the variations of Voltage based Maximum Power Point (VMPP) of PV array because of the variations in solar irradiance. The proposed system uses the current control approach which has zero steady state tracking error to control the single stage boost inverter. The proposed system offers many advantages such as low cost, high efficiency, compactness and high quality of output power. Design procedure and simulation results are obtained from MATLAB/SIMULINK and the experimental results are obtained from the model developed in the laboratory. The entire system is controlled by SPATRAN 3A FPGA board.

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Culler, Megan, and Hannah Burroughs. "Cybersecurity Considerations for Grid-Connected Batteries with Hardware Demonstrations." Energies 14, no. 11 (2021): 3067. http://dx.doi.org/10.3390/en14113067.

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The share of renewable and distributed energy resources (DERs), like wind turbines, solar photovoltaics and grid-connected batteries, interconnected to the electric grid is rapidly increasing due to reduced costs, rising efficiency, and regulatory requirements aimed at incentivizing a lower-carbon electricity system. These distributed energy resources differ from traditional generation in many ways including the use of many smaller devices connected primarily (but not exclusively) to the distribution network, rather than few larger devices connected to the transmission network. DERs being installed today often include modern communication hardware like cellular modems and WiFi connectivity and, in addition, the inverters used to connect these resources to the grid are gaining increasingly complex capabilities, like providing voltage and frequency support or supporting microgrids. To perform these new functions safely, communications to the device and more complex controls are required. The distributed nature of DER devices combined with their network connectivity and complex controls interfaces present a larger potential attack surface for adversaries looking to create instability in power systems. To address this area of concern, the steps of a cyberattack on DERs have been studied, including the security of industrial protocols, the misuse of the DER interface, and the physical impacts. These different steps have not previously been tied together in practice and not specifically studied for grid-connected storage devices. In this work, we focus on grid-connected batteries. We explore the potential impacts of a cyberattack on a battery to power system stability, to the battery hardware, and on economics for various stakeholders. We then use real hardware to demonstrate end-to-end attack paths exist when security features are disabled or misconfigured. Our experimental focus is on control interface security and protocol security, with the initial assumption that an adversary has gained access to the network to which the device is connected. We provide real examples of the effectiveness of certain defenses. This work can be used to help utilities and other grid-connected battery owners and operators evaluate the severity of different threats and the effectiveness of defense strategies so they can effectively deploy and protect grid-connected storage devices.

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Et. al., Vasa Satyanarayana ,. "Optimization Of Adaptive Control Technique For Grid Integrated Pv-Dstatcom." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 2 (2021): 1640–46. http://dx.doi.org/10.17762/turcomat.v12i2.1449.

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This paper depicts an optimization of adaptive control strategy for grid integrated PV-DSTATCOM and dynamic power channel inverter topographies and their control plans using mechanical rules and advanced high-power courses of action. In this paper we will accomplish DSATCOM based maximum power point tracking (MPPT) method for a three stage framework to improve power quality and backing the three stage AC grid by providing power both to the grid and the associated loads. The proposed framework functions as DSTATCOM improving power quality and the power is moved from the grid to the heap. The exhibition of DSTATCOM and the power point is noticed and it is by all accounts all around performed to restrict the music. The test framework is actualized utilizing MATLAB SIMULINK programming. The framework is named as a brilliant as it can perform the two modes consequently detecting the PV power and is fit for multidirectional power stream.Additionally we will reproduce and print results for optimization of adaptive control technique for grid integrated solar cells. The trial approval is completed on a created model in the research facility under fluctuating modes. The proposed PV grid tied framework is fit for working nonstop. During daylight conditions, the proposed framework performs double elements of improving power quality by functioning as DSTATCOM and furthermore moves power to the heap and the grid got from PV cluster. Notwithstanding, during night or shady conditions.

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Kebede, Asegid Belay, and Getachew Biru Worku. "Systematic and Novel Approach to Modeling, Analysis and Control of Grid Tied PV Power Supply System Using Integral State Feedback Control and State Observer." Advanced Engineering Forum 41 (July 7, 2021): 93–109. http://dx.doi.org/10.4028/www.scientific.net/aef.41.93.

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Today, the share of global energy mix related to renewable energy technologies is rising drastically. The main reason behind this new trend is associated with many global challenges. Sustainable development, climate change and the need for alternative sources of energy are some of the driving forces and also reason’s powering technological innovation in energy sector. However, in order to achieve climate change goals, technological advancements of green energy must be accelerated. In this paper, a grid connected three phase photo-voltaic power supply system using integral state feedback control and state observer has been examined and proposed. Mathematical modeling of main components of the PV system including the power grids, solar panels, DC-DC converter and DC-AC inverter are performed. In addition, in order to increase the efficiency of the proposed system a maximum power point tracking algorithm using fuzzy logic control is introduced. Finally, simulation results using MATLAB shows the effectiveness of the proposed solution. Keyword: PV system, green energy, DC-DC converter, DC-AC converter, Maximum power point tracking.

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Mao, Wang, Xing Zhang, Yuhua Hu, et al. "A Research on Cascaded H-Bridge Module Level Photovoltaic Inverter Based on a Switching Modulation Strategy." Energies 12, no. 10 (2019): 1851. http://dx.doi.org/10.3390/en12101851.

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The stable operating region of a photovoltaic (PV) cascaded H-bridge (CHB) grid-tied module level inverter is extended by adopting the hybrid modulation strategy. However, the traditional single hybrid modulation method is unable to regulate the DC-side voltage of each module precisely, which may aggravate the fluctuation of modules’ DC-side voltages or even cause the deviation of modules’ DC-side voltages under some fault conditions and, thus, degrade the energy harvesting of PV panels. To tackle this problem, a switching modulation strategy for PV CHB inverter is proposed in this paper. When the CHB inverter is operating in normal mode, the hybrid modulation strategy containing the zero state is adopted to suppress DC-side voltage fluctuation, thereby, improving the output power of PV modules. When the CHB inverter is operating in fault mode owing to failing solar panels, the hybrid modulation strategy without the zero state is utilized to make the DC-side voltages reach the references and, thus, maintain a higher energy yield under fault conditions. Experimental results achieved by a laboratory prototype of a single-phase eleven-level CHB inverter demonstrate both the feasibility and effectiveness of the proposed method.

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J, Michael Jayaraj, Mounick Raj T, Venkatesh and G, and Vasanth Raj S. "Automated Switching Solar Power Grid Tie Inverter Using Embedded System." Bonfring International Journal of Power Systems and Integrated Circuits 9, no. 1 (2019): 05–09. http://dx.doi.org/10.9756/bijpsic.9010.

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Islam, Haidar, Saad Mekhilef, Noraisyah Mohamed Shah, Tey Kok Soon, Addy Wahyudie, and Mahrous Ahmed. "Improved Proportional-Integral Coordinated MPPT Controller with Fast Tracking Speed for Grid-Tied PV Systems under Partially Shaded Conditions." Sustainability 13, no. 2 (2021): 830. http://dx.doi.org/10.3390/su13020830.

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When a photovoltaic (PV) system is exposed to physical objects and cloud coverage and connected to bypass diodes, a partial shading condition (PSC) occurs, which causes a global maximum power point (GMPP) and numerous local maximum power points (LMPPs) on the power-voltage (P-V) curve. Unlike conventional MPPT techniques that search for multiple LMPPs on the P-V curve, it is possible to track GMPP straightaway by designing a simple but robust MPPT technique that results in faster tracking speed and low power oscillations. Hence, in this study, an improved proportional-integral (PI) coordinated Maximum Power Point Tracking (MPPT) algorithm is designed to enhance the conversion efficiency of a PV system under PSC with fast-tracking speed and reduced power oscillations. Here, PI controllers are used to mitigating the steady-state errors of output voltage and current of PV system that later on passed through an incremental conductance (INC) algorithm to regulate the duty cycle of a dc–dc boost converter in order to ensure fast MPPT process. The PV system is integrated with the grid through an H-bridge inverter, which is controlled by a synchronous reference frame (SRF) controller. Tracking speed and steady-state oscillations of the proposed MPPT are evaluated in the MATLAB/Simulink environment and validated via a laboratory experimental setup using Agilent solar simulator and dSPACE (DS1104) controller. Results show that the proposed MPPT technique reduces the power fluctuations of PV array significantly and the tracking speed of the proposed method is 13% and 11% faster than the conventional INC and perturb and observe (P&O) methods respectively under PSCs.

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Sankar, R. S. Ravi, K. K. Deepika, and A. V. Satyanarayana. "Harmonic stability analysis of multi-paralleled 3-phase PV inverters tied to grid." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 2 (2021): 783. http://dx.doi.org/10.11591/ijpeds.v12.i2.pp783-792.

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In this paper the harmonic stability is investigated for multi paralleled three-phase photovoltaic inverters connected to grid. The causes to harmonically stabilize/destabilize the multi-paralleled PV inverters when tied to the grid isanalysed by the impedance-based stability criterion (IBSC). In this paper stability of the system is investigated by varying the grid inductance with constant grid resistance and also by varying load impedance while maintaining grid inductance constant. Stability of the multiple three phase inverters tied to the grid with different grid impedance, inductance value inparticular are analyzed. Overall system is stable up to grid inductance of5mH even though there is change in load admittance. It is concluded that system stability depends only on grid impedance. It is verified with Matlab Simulations.

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Li Zhang, Kai Sun, Yan Xing, and Mu Xing. "H6 Transformerless Full-Bridge PV Grid-Tied Inverters." IEEE Transactions on Power Electronics 29, no. 3 (2014): 1229–38. http://dx.doi.org/10.1109/tpel.2013.2260178.

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Journal articles on the topic 'Grid tied solar inverters'

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