A comprehensive review of grid-connected solar photovoltaic system: Architecture, control, and ancillary services

Morey, Meghraj; Gupta, Nitin; Garg, Man Mohan; Kumar, Ajay

doi:10.1016/j.ref.2023.04.009

Cited by 42 publications

(4 citation statements)

References 175 publications

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“…The objective is to use a Robust Integral Back-Stepping Controller (RIBSC) to generate a sinusoidal output voltage at the load terminal, facilitating closed-loop control. The RIBSC structure is primarily based on the Lyapunov dynamic system stability theory [ 48 ]. This process is intended to force the inverter output voltage x 1 closely track reference voltage U cref with the highest degree of robustness and minimal THD.…”

Section: Proposed Control Algorithmsmentioning

confidence: 99%

Nonlinear control of two-stage single-phase standalone photovoltaic system

Latif,

Khan,

Agha

et al. 2024

PLoS ONE

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This paper presents a single-phase Photovoltaic (PV) inverter with its superior and robust control in a standalone mode. Initially, modeling and layout of the Buck-Boost DC-DC converter by adopting a non-linear Robust Integral Back-stepping controller (RIBSC) is provided. The controller makes use of a reference voltage generated through the regression plane so that the operating point corresponding to the maximum power point (MPP) could be achieved through the converter under changing climatic conditions. The other main purpose of the Buck-Boost converter is to act like a transformer and produce an increased voltage at the inverter input whenever desired. By not using a transformer makes the circuit size more compact and cost-effective. The proposed RIBSC is applied to an H-bridge inverter with an LC filter to produce the sinusoidal wave in the presence of variations in the output to minimize the difference between the output voltage and the reference voltage. Lyapunov stability criterion has been used to verify the stability and finite-time convergence of the overall system. The overall system is simulated in MATLAB/Simulink to test the system performance with different loads, varying climatic conditions and inverter reference voltages. The proposed methodology is compared with a back-stepping controller and Proportional Integral Derivative (PID) controller under rapidly varying climatic conditions. Results demonstrated that the proposed technique yielded a tracking time of 0.01s, a total harmonic distortion of 9.71% and a root means square error of 0.3998 in the case of resistive load thus showing superior control performance compared to the state-of-the-art control techniques.

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Section: Proposed Control Algorithmsmentioning

confidence: 99%

Nonlinear control of two-stage single-phase standalone photovoltaic system

Latif,

Khan,

Agha

et al. 2024

PLoS ONE

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“…These converters are equipped with P&O and incremental conductance MPPT algorithms with 0.1 kHz frequency. The DC/AC converter of both PVGs uses the pulse width modulation (PWM) technique in the synchronous reference frame [34]. Since the proposed method supports overvoltage of LV MG based on active power control, reactive power generation and consumption are set to zero for all scenarios.…”

Section: Case Study Microgridmentioning

confidence: 99%

Analytical Overvoltage and Power-Sharing Control Method for Photovoltaic-Based Low-Voltage Islanded Microgrid

Bakhshi-Jafarabadi,

Lekić,

Marvasti

et al. 2023

IEEE Access

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Overvoltage instability is a growing concern in a standalone low-voltage (LV) microgrid (MG) with non-dispatchable intermittent renewable energies such as residential and commercial photovoltaic generators (PVGs). Several overvoltage controllers used in PV arrays have adopted the concept of standard deviation from the maximum power point (MPP) to curtail the generated power. However, these solutions lack presenting analytical expression for the MPP deviation size, settings tuning independent of the MG's/PV's characteristics, scalability, and accurate power-sharing in the same control structure. To overcome these limitations, this paper proposes a new analytical MPP tracking (MPPT)-based overvoltage and power-sharing control method using the series equivalent resistance of the PV module model. By applying this analytical expression, the size of the PV array voltage shift to the right-hand side of the MPP is obtained in terms of overvoltage level, while all PVGs proportionally curtail the active power output. The effectiveness of the proposed methodology is shown in various low-demand and high-PV generation cases through a real time digital simulator (RTDS) platform. In addition to the fast and accurate performance, the presented method benefits from the straightforward and communication-free structure as it solely exploits the point of common coupling (PCC) voltage. Also, the method's threshold does not require re-tuning after MG restructure, ensuring scalability. Without relying on other microgrid facilities, the proposed methodology is accordingly an effective solution for practical PV-based LV MGs.

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“…In 2022, the newly installed and grid-connected PV power generators accounted for 87.4 GW, including 36.29 GW from centralized PV power plants and 51.11 GW from distributed PV systems [28]. By the end of 2022, the cumulative grid-connected capacity of PV power generation in China had reached 392.04 GW, including 234.42 GW from centralized PV power plants and 157.62 GW from distributed PV systems, which could indicate great potential for the photovoltaic industry in China as well as a corresponding benefit for carbon emission reduction [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Life Cycle-Based Carbon Emission Reduction Benefit Assessment of Centralized Photovoltaic Power Plants in China

Deng,

Wu,

Yang

et al. 2023

Sustainability

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Developing clean energy is the key to reducing greenhouse gas (GHG) emissions and addressing global climate change. Photovoltaic energy systems are considered to be clean and sustainable energy resources due to their wide distribution and easy deployment. However, the environment can still be impacted during the processes from the production to recycling of such systems. Therefore, this study was conducted based on the whole life-cycle analysis to establish a mathematical model for carbon emissions during the processes of production, transportation, and waste disposal of photovoltaic power systems. The main conclusions are as follows. (1) The carbon emissions of a centralized photovoltaic power station with a unit installed capacity of 1 kWp during its entire life cycle would be 2094.40 kg, while the carbon recycling period would last 1.89 years, which would be shorter than the expected life cycle of a photovoltaic system of 25 years, indicating significant environmental benefits. (2) The calculated results from 2022 showed that the newly constructed centralized photovoltaic power stations in China could reduce carbon dioxide emissions by 31,524.26 tons during their life cycles, and their carbon emissions from 1 kWh are approx. 1/10 of those of thermal power generation, which is significantly lower than that of thermal power generation. (3) From the perspective of the soil carbon sequestration capacity and opportunity cost, the economic cost of carbon emissions from the new centralized photovoltaic power stations in China in 2022 was 1.083 billion yuan. (4) The analysis of the relationship using the Granger causality test revealed that, with a lag of one period and a significance level of 5%, the carbon emissions from the new centralized PV power stations from 2013–2022 were the Granger cause of the added value from the secondary industry in China, while the added value from the secondary industry was not the Granger cause of the carbon emissions from the new PV power stations. The findings of the performed study could increase the utilization rate of photovoltaic energy by ensuring it is a secure sustainable low-carbon emission resource, while also reducing the impact of climate change on the planet and promoting individual well-being and social development.

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A comprehensive review of grid-connected solar photovoltaic system: Architecture, control, and ancillary services

Cited by 42 publications

References 175 publications

Nonlinear control of two-stage single-phase standalone photovoltaic system

Nonlinear control of two-stage single-phase standalone photovoltaic system

Analytical Overvoltage and Power-Sharing Control Method for Photovoltaic-Based Low-Voltage Islanded Microgrid

Life Cycle-Based Carbon Emission Reduction Benefit Assessment of Centralized Photovoltaic Power Plants in China

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