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This work has applied a suite of long-term-reliability accelerated tests to a variety of module-level power electronics (MLPE) devices (such as microinverters and optimizers) from five different manufacturers. This dataset is one of the first (only the paper by Parker et al. entitled “Dominant factors affecting reliability of alternating current photovoltaic modules,” in Proc. 42nd IEEE Photovoltaic...
The scope for module level power electronics (MLPE) is immense in modern day PV industry but it lacks in assessing the reliability. This paper presents the work performed by PREDICTS (Physics of Reliability: Evaluating Design Insights for Component Technologies in Solar) team lead by Sandia National Laboratories to develop a standard reliability assessment protocol for MLPE including microinverters...
In order to elucidate how the degradation of individual components affects the state of the photovoltaic inverter as a whole, we have carried out SPICE simulations to investigate the voltage and current ripple on the DC bus. The bus capacitor is generally considered to be among the least reliable components of the system, so we have simulated how the degradation of bus capacitors affects the AC ripple...
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