Sensitivity and reliability models of a PV system connected to grid

Gupta, Nikita; Garg, Rachana; Kumar, Prashant

doi:10.1016/j.rser.2016.11.031

Cited by 46 publications

(23 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The photovoltaic systems have different stages of energy conversion and coupling to the electric grid, being complex and robust systems due to the big number of power semiconductors that are used [2]. The power converters are one of the weakest stages in terms of the useful life of photovoltaic systems; generally, a photovoltaic panel has a useful life in terms of reliability of 20 to 30 years, and the inverter is required to have a comparable useful life [3,4]. This problem has been corrected replacing the inverter when it is needed, but economically is not viable, and the repair tends to be complex; this has carried to the search for solutions to extend the life of the system as a whole [4].…”

Section: Introductionmentioning

confidence: 99%

L vs. LCL Filter for Photovoltaic Grid-Connected Inverter: A Reliability Study

Martínez

Vázquez

Vaquero

et al. 2020

International Journal of Photoenergy

View full text Add to dashboard Cite

The increasing use of photovoltaic systems entails the use of new technologies to improve the efficiency and power quality of the grid. System performance is constantly increasing, but its reliability decreases due to factors such as the uncontrolled operation, the quality of the design and quantity of components, and the use of nonlinear loads that may lead to distortion in the signal, which directly affects the life of the system globally. This article presents an analysis of the reliability of a single-phase full-bridge inverter for active power injection into the grid, which considers the inverter stage with its coupling stage. A comparison between an L filter and an LCL filter, which comprise the coupling stage, is made. Reliability prediction is based on metrics, failure rate, mean time between failures, and total harmonic distortion. The analysis and numerical simulation are performed. Finally, filter considerations are suggested to extend the reliability of the inverter in a photovoltaic system.

show abstract

Section: Introductionmentioning

confidence: 99%

L vs. LCL Filter for Photovoltaic Grid-Connected Inverter: A Reliability Study

Martínez

Vázquez

Vaquero

et al. 2020

International Journal of Photoenergy

View full text Add to dashboard Cite

show abstract

“…Although this standard has been criticized for being obsolete, it is still extensively used in military and aerospace industries to provide a basis for comparison between two or more different circuits [17]. For this reason, several previous literatures have employed this standard for predicting the reliability of power electronic converters (e.g., [18][19][20][21][22]). To investigate the reliability of semiconductor devices, there is a need for determining the junction temperature in these types of components, and in this study, the selected approach is based on information from manufacturer's datasheet.…”

Section: Introductionmentioning

confidence: 99%

Reliability evaluation of buck converter based on thermal analysis

Mojibi

Radmehr

2019

Informacije MIDEM

View full text Add to dashboard Cite

The design, which is based on the concept of reliability, is impressive. In power electronic circuits, the reliability design has been shown to be useful over time. Moreover, power loss in switches and diodes plays a permanent role in reliability assessment. This paper presents a reliability evaluation for a buck converter based on thermal analysis of an insulated-gate bipolar transistor (IGBT) and a diode. The provided thermal analysis is used to determine the switch and diode junction temperature. In this study, the effects of switching frequency and duty cycle are considered as criteria for reliability. A limit of 150°C has been set for over-temperature issues. The simulation of a 12 kW buck converter (duty cycle = 42% and switching frequency = 10 kHz) illustrates that the switch and diode junction temperature are 117.29°C and 122.27°C, respectively. The results show that mean time to failure for the buck converter is 32,973 hours.

show abstract

“…For Solar-PV systems [16][17][18]24] it is found that:  The inverter is the leading cause of failures in grid-connected solar-PV systems, while the second and third causes are respectively the failures of the string protection, and solar-PV modules.  The reliability of each subsystem decreases with time and with the number of subassemblies comprising the subsystem.…”

Section: Introductionmentioning

confidence: 99%

Detailed Analyses of the Failure and Repair Rates of Wind and Solar- PV Systems for RAM Assessment

El-Metwally

EL-Shimy

Elshahed

et al. 2018

The International Conference on Electrical Engineering

View full text Add to dashboard Cite

This paper presents an extensive survey of the failure, and repair rates of wind, and solar-PV energy conversion systems. Various practical layouts of these systems are presented considering various operation modes (i.e. off-grid, and grid-connected), and load types (i.e. deferrable, and non-deferrable). The presented layouts of wind and solar-PV energy systems cover various energy solutions for various operation modes, and load types. The overall structure of each system is separated into a set subsystems, then each subsystem is separated into a set of subassemblies or items. Considering repairable, and nonrepairable items, the analyses of failure, and repair rates are then performed for identifying the reliable performance, and weak items. The confidence of the results is increased by collecting huge amounts of data. These data cover various configurations, and meteorological conditions (i.e. stress factors) are analyzed and represented by their confidence median values. Salient conclusions are reached from the analyses of the collected data. The presented results are essential for performing a detailed Reliability, Availability, and Maintainability (RAM) of wind, and solar-PV systems. In addition, they are useful in identifying the weak items, for setting appropriate maintenance plans for increasing the overall reliability of the considered systems.

show abstract

Sensitivity and reliability models of a PV system connected to grid

Cited by 46 publications

References 22 publications

L vs. LCL Filter for Photovoltaic Grid-Connected Inverter: A Reliability Study

L vs. LCL Filter for Photovoltaic Grid-Connected Inverter: A Reliability Study

Reliability evaluation of buck converter based on thermal analysis

Detailed Analyses of the Failure and Repair Rates of Wind and Solar- PV Systems for RAM Assessment

Contact Info

Product

Resources

About