PV system modeling, monitoring, and diagnosis

Yang, Yongheng; Kim, Katherine A.; Blaabjerg, Frede; Sangwongwanich, Ariya

doi:10.1016/b978-0-08-102339-6.00003-8

Cited by 6 publications

(6 citation statements)

References 36 publications

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“…That is, it determines how fast the response of the backward diode will be. It is determined by the projection at the x-axis of the point of intersection between the shaded reverse J-V curve (where the dark situation is the worst case) and the forward J-V curve of the unshaded cell [ 51 , 52 , 53 ]. In other words, it can be defined when the reverse short-circuit current of the shaded cell reaches the value of the short-circuit current of the unshaded cell ( Figure 5 b).…”

Section: Resultsmentioning

confidence: 99%

Design and Optimization of a Self-Protected Thin Film c-Si Solar Cell against Reverse Bias

et al. 2023

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Current mismatch due to solar cell failure or partial shading of solar panels may cause a reverse biasing of solar cells inside a photovoltaic (PV) module. The reverse-biased cells consume power instead of generating it, resulting in hot spots. To protect the solar cell against the reverse current, we introduce a novel design of a self-protected thin-film crystalline silicon (c-Si) solar cell using TCAD simulation. The proposed device achieves two distinct functions where it acts as a regular solar cell at forward bias while it performs as a backward diode upon reverse biasing. The ON-state voltage (VON) of the backward equivalent diode is found to be 0.062 V, which is lower than the value for the Schottky diode usually used as a protective element in a string of solar cells. Furthermore, enhancement techniques to improve the electrical and optical characteristics of the self-protected device are investigated. The proposed solar cell is enhanced by optimizing different design parameters, such as the doping concentration and the layers’ thicknesses. The enhanced cell structure shows an improvement in the short-circuit current density (JSC) and the open-circuit voltage (VOC), and thus an increased power conversion efficiency (PCE) while the VON is increased due to an increase of the JSC. Moreover, the simulation results depict that, by the introduction of an antireflection coating (ARC) layer, the external quantum efficiency (EQE) is enhanced and the PCE is boosted to 22.43%. Although the inclusion of ARC results in increasing VON, it is still lower than the value of VON for the Schottky diode encountered in current protection technology.

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Section: Resultsmentioning

confidence: 99%

Design and Optimization of a Self-Protected Thin Film c-Si Solar Cell against Reverse Bias

et al. 2023

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“…A monolithic photovoltaic cell, when not exposed to light, acts just like a semiconductor diode. There is a lot of talk about utilizing this model to characterize the static I-V characteristic, and it has been used to successfully accommodate experimental findings [8].…”

Section: Single Diode Model (Sdm) Of Pv Cellmentioning

confidence: 99%

“…Similar to how the Double Diode Model (DDM) is used to estimate seven variables and show losses in space-charge, quasineutral zones, the Three Diode Model (TDM) shows losses in all three regions and is used to estimate nine parameters. However, just five PV cell characteristics are calculated using SDM here since SDM estimation is straightforward in comparison to DDM and TDM [8][9][10]. However, unlike DDM and TDM, its electrical equivalent diagram is straightforward.…”

Section: Introductionmentioning

confidence: 99%

A Review On The Estimate Solar PV Cell Variables For Efficient Photovoltaic Systems

2023

ijSmartGrid

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Now a days all are aware that conventional sources such as coal, petrol, diesel, nuclear are currently deteriorating day by day. Research is therefore concentrating on renewable sources such as solar, wind, tidal, biomass, etc., as an alternative to conventional sources. In all of these renewable sources, solar energy is affordable and incredibly efficient because of its cheap cost and pollution free. Therefore, regardless of their motivation, everyone chooses solar energy to meet their daily needs. As a result, to produce electricity more efficiently, the ratings of solar PV cell must take into account which panels have a significant role in determining the performance of the solar panel as well as which is also used in the construction of solar panels. And at the same time, the performance of a photovoltaic (PV) system can be obtained by estimating the accurate solar PV cell variables such as diode saturation current (Id), photocurrent (Iphoto), ideality factor (α), shunt resistance (Rsh), series resistance (Rse). All these five parameters are estimated by using the Single Diode Model (SDM) and it demonstrates the deficits in the quasi-neutral region. Researchers used a lot of methods to find out these parameters. But in this context, these parameters can be extracted by considering the series and shunt resistances.

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“…The DC/DC converter performs the function of converting the DC voltage source to another DC voltage source of different magnitude. The DC/AC inverter performs the function of converting a DC voltage source to an AC voltage source and synchronizes the AC output to the utility grid (Yang et al, 2019). The usage of an inverter in a microgrid system results in drawbacks such as harmonics and voltage imbalances to mention a few.…”

Section: Modeling and Simulation Of Solar Photo Voltaic Microgridsmentioning

confidence: 99%

“…Depending on the microgrid system's energy requirements, an ESS in the form of batteries are used to charge and discharge the microgrid DC bus system. The interaction between the components of microgrids and power flow is achieved through a control and Energy Management System (EMS) (Yang et al, 2019). Multiple control strategies have been developed in literature and the most documented effective way to manage power flow in the microgrid is the hierarchical control scheme (Planas et al, 2013;Meng et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

A review of modeling and simulation tools for microgrids based on solar photovoltaics

2022

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Solar Photo Voltaic (PV) powered community microgrids are a promising sustainable solution for neighborhoods, residential quarters, and cities in sub-Saharan Africa (SSA) to meet their energy demands locally and to increase energy independence and resilience. This review provides a comprehensive study on the nature of solar PV community microgrids. Through their capacity to operate in both grid-connected and island modes, community microgrids improve utility system resiliency while also boosting energy security in local states and towns. The integration of solar PV microgrids with the electricity utility grid requires control strategies to facilitate the load sharing between distributed generation units, voltage and frequency control, as well as emergency islanding. Control strategies such as hierarchical control and droop are discussed in the review article. To identify the effectiveness of control strategies through system simulation, a review of various modeling designs of individual components in a solar PV microgrid system is discussed. The article goes on to talk about energy optimization approaches and their economic impact on microgrid systems. Finally, the review concludes with an overview of the technical challenges encountered in the integration of solar PV systems in microgrids.

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PV system modeling, monitoring, and diagnosis

Cited by 6 publications

References 36 publications

Design and Optimization of a Self-Protected Thin Film c-Si Solar Cell against Reverse Bias

Design and Optimization of a Self-Protected Thin Film c-Si Solar Cell against Reverse Bias

A Review On The Estimate Solar PV Cell Variables For Efficient Photovoltaic Systems

A review of modeling and simulation tools for microgrids based on solar photovoltaics

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