Active Power Sharing and Reactive Power Compensation in a Grid-tied Photovoltaic System

Prasad, Vishnu; Jayasree, P R; Sruthy, V

doi:10.1016/j.matpr.2017.11.243

Cited by 15 publications

(6 citation statements)

References 9 publications

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“…In particular, power factor and harmonic distortion, which are indicators of system quality, are negatively affected. The values of the system power factor are decreasing and the the total harmonic distortion for current (THDI) value is increasing [2][3][4][5]. Circuit elements with non-linear characteristics in the power electronics devices generate THDI [6][7].…”

Section: Introducti̇onmentioning

confidence: 99%

WITHDRAWN: Quality Problems in Low İrradiance at Grid Connected PV Solar System

Adak

2022

Preprint

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Solar Photovoltaic (PV) energy is one of the main topics that have attracted the attention of researchers in recent years. The use of solar energy is increasing rapidly in the world. Although PV energy has many advantages, it has some disadvantages. Among these disadvantages, power factor (PF) and Total Harmonic Distortion (THD) issues are discussed in this article. PF and THD are dependent on the radiation values. The solar inverter output voltage and current waveform should be in sinusoidal waveform. However, the sinusoidal waveform of current and voltage lose their sinusoidal characteristics due to non-linear loads on grid-connected solar system. Harmonic components often occur in grid-connected solar PV systems. In addition, at low irradiance the amplitude of harmonic components increases, whereas the power factor of the PV system decreases. Low power factor and high amplitude of harmonics cause the efficiency of the solar system to decrease. PF and THD values were measured in a particular cloudy day for analysis. The grid-connected PV system was modeled by using Matlab /simulation program and carried out the analysis of the solar PV system. Thus, the analytical expression of the PF and THDI dependent on irradiation were found with a new method by using statistical package for the social sciences (SPSS) program and curve fitting method.

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Section: Introducti̇onmentioning

confidence: 99%

WITHDRAWN: Quality Problems in Low İrradiance at Grid Connected PV Solar System

Adak

2022

Preprint

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“…Moreover, the LCL filtering technique was employed to reduce the harmonics in the output current. Prasad et al (2018) deployed an adaptive hysteresis current control scheme for reactive power compensation in a grid systems. Moreover, a Synchronous Reference Frame (SRF) method was applied to extract the reference current for inverter switching.…”

Section: Related Workmentioning

confidence: 99%

Improved Artificial Neural Network Grid Synchronization Technique for Three-Phase Grid Systems based on Synthesis Segmental Multilevel Converter

Rajendran

Sundharajan

2021

Preprint

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The solar Photovoltaic (PV) systems have gained a significant attention due to its easy implementation and availability. In which, the proper energy management should be mainly concentrated for a successful PV power utilization. In the traditional works, various controlling techniques have been developed for reactive power compensation. But, it lacks with the issues related to reduced system performance, increased loss, and high harmonics. To solve these issues, this paper aims to develop a new controlling methodology, named as Synthesis Segmental Multilevel Converter (SSMC) for reactive power compensation in a three phase grid systems. Initially, it extracts the maximum power from the solar PV systems by using an Enhanced Perturb and Observe (EPO) method. The panel separation is done and the three phase power input is given to the SSMC converter, where the synchronization and switching pulse generation processes are performed. During synchronization, integrated techniques such as Proportional Integral (PI), Fuzzy Logic Controller (FLC), and Improved Artificial Neural Network (IANN) techniques are utilized to maintain the voltage, magnitude and phase angle in a same level. Consequently, the Inductance Capacitance (LC) filtering technique is applied to reduce the harmonics distortion in the signal. After that, the Park transformation is used to perform the dq0 to abc transformation, which is implemented for reducing the high volume of error. Finally, the error free signal is fed to the three phase grid system with reduced harmonics also both the simulation and analytical results have been taken for analyzing the performance of the proposed technique.

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“…Then, we differentiate (9) and let the result be zero in order to obtain the maximum value of inductor current ripple:…”

Section: Design Of Direct Current (Dc) Capacitor and Filter Inductorsmentioning

confidence: 99%

“…An APF is usually connected to the point of common coupling (PCC) in parallel or series to perform its designed functions; however, shunt APFs are more commonly used because they provide more flexible compensation functions though current-injecting control and require less auxiliary equipment. When a series APF and a shunt APF are connected with a common direct current (DC) link, they can be used simultaneously, known as a unified power quality conditioner (UPQC) [1][2][3][4].In open literature, there are a lot of papers investigating the application of APF to the mitigation of PQ issues, such as the improvement of PCC voltage stability [5,6], compensation of harmonic currents [5][6][7] and unbalance load currents [7,8], injection of active power [8,9], regulation of reactive power [6,9], etc. In order to develop high-performance APFs, it is crucial to improve the switching performance of power converters.…”

mentioning

confidence: 99%

“…In open literature, there are a lot of papers investigating the application of APF to the mitigation of PQ issues, such as the improvement of PCC voltage stability [5,6], compensation of harmonic currents [5][6][7] and unbalance load currents [7,8], injection of active power [8,9], regulation of reactive power [6,9], etc. In order to develop high-performance APFs, it is crucial to improve the switching performance of power converters.…”

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confidence: 99%

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Design and Implementation of a GaN-Based Three-Phase Active Power Filter

2020

Micromachines

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Renewable energy (RE)-based power generation systems and modern manufacturing facilities utilize a wide variety of power converters based on high-frequency power electronic devices and complex switching technologies. This has resulted in a noticeable degradation in the power quality (PQ) of power systems. To solve the aforementioned problem, advanced active power filters (APFs) with improved system performance and properly designed switching devices and control algorithms can provide a promising solution because an APF can compensate for voltage sag, harmonic currents, current imbalance, and active and reactive powers individually or simultaneously. This paper demonstrates, for the first time, the detailed design procedure and performance of a digitally controlled 2 kVA three-phase shunt APF system using gallium nitride (GaN) high electron mobility transistors (HEMTs). The designed digital control scheme consists of three type II controllers with a digital signal processor (DSP) as the control core. Using the proposed APF and control algorithms, fast and accurate compensation for harmonics, imbalance, and reactive power is achieved in both simulation and hardware tests, demonstrating the feasibility and effectiveness of the proposed system. Moreover, GaN HEMTs allow the system to achieve up to 97.2% efficiency.

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Active Power Sharing and Reactive Power Compensation in a Grid-tied Photovoltaic System

Cited by 15 publications

References 9 publications

WITHDRAWN: Quality Problems in Low İrradiance at Grid Connected PV Solar System

WITHDRAWN: Quality Problems in Low İrradiance at Grid Connected PV Solar System

Improved Artificial Neural Network Grid Synchronization Technique for Three-Phase Grid Systems based on Synthesis Segmental Multilevel Converter

Design and Implementation of a GaN-Based Three-Phase Active Power Filter

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