Articles

Review of photovoltaic degradation rate methodologies

The accurate and efficient evaluation of performance degradation of PV technologies is the next logical step to reaping the benefits of PV. as new. more efficient technologies emerge with unstudied and undefined durability and weatherability. Understanding of the performance degradation under real operating conditions is a key requirement for their …

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Mean Shift-Based Defect Detection in Multicrystalline Solar Wafer Surfaces

This paper has presented a mean shift-based machine vision method for detecting fingerprint and contamination defects in multicrystalline solar wafers. The defect types involve random gradient directions. whereas the normal grain edges generally present more consistent gradient directions in a small spatial window. The entropy of gradient directions is then …

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A survey of fault diagnosis for onshore grid-connected converter in wind energy conversion systems

The fault diagnosis of wind converter is in continuous development in recent years. It reduces the downtime and maintenance cost of WECS. and improves the system availability and operational safety. This paper has surveyed typical fault modes of the fragile components in wind converter and has provided a comprehensive review …

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Stability Enhancement Of Dfig Wind Turbines By Parameters Tuning Of Shunt Connected Facts Devices Using Itae Index

In this article. our purpose was improving the DFIG stability with tuning of STATCOM control parameters. In order to select the objective function. we proposed a method with the name of integral of time absolute error index or ITAE then optimization process was done by genetic algorithm. Optimization results showed …

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