Abstract
The primary aim of this present study is to examine how reliability, availability, maintainability, and dependability (RAMD) are used to describe the criticality of each sub-assembly in grid- connected photovoltaic systems. A transition diagram of all subsystems is produced for this analysis, and Chapman-Kolmogorov differential equations for each variable of each subsystem are constructed using the Markov birth-death process. Both random failure and repair time variables have an exponential distribution and are statistically independent. A sufficient repair facility is still available with the device. The numerical results for reliability, maintainability, dependability, and steady-state availability for various photovoltaic device components have been obtained. Other metrics, such as mean time to failure (MTTF), mean time to repair (MTTR), and dependability ratio, which aid in device performance prediction, have also been measured. According to numerical analysis. it is hypothesized that subsystem S4, i.e. the inverter, is the most critical and highly sensitive portion that requires special attention in order to improve the efficiency of the PV device plant. The findings of this research are very useful for photovoltaic system designers and maintenance engineers.
Highlights
The dependability of photovoltaic systems and their components/elements such as solar cells, PV modules, electrical storage systems, inverters, regulators, etc is a critical problem in production efficiency and financially competitive photovoltaic installations
PV systems have become a common solution for residential houses and other autonomous applications due to numerous reward schemes and local market conditions in many European countries, as well as around the world
Re- of identification and replacement of the PV system). Furthersearchers such as; Huffman [1], Hamdy et al [2] and Graaff more, the aim of this paper is to describe the criticality of each et al [3] investigated on significant issues concerning the re- sub-assembly of grid-connected PV systems in terms of relialiability, and safety of PV systems, RAM study of large-scale bility
Summary
The dependability of photovoltaic systems and their components/elements such as solar cells, PV modules, electrical storage systems, inverters, regulators, etc is a critical problem in production efficiency and financially competitive photovoltaic installations. A product’s reliability can be described as the likelihood of system completing its tasks within a given time frame under stipulated conditions. The consistency of a product is calculated on this basis, with the reliability principle be-. Ing used in most fields of engineering, including preventive maintenance of structures and their components. RAMD is regarded as one of the most important fields for increasing profitability. RAMD modeling can help to improve safety and environmental efficiency, both of which are essential factors in every industry. It becomes important to evaluate each and every part or subsystem of the system in order to execute safety and environmental performance.
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