Source: EPCI e-Symposium PCNS paper
by Luca Primavesi (1) and Saverio Latorrata (2)
1) Itelcond, Settimo Milanese, Italy 2) Politecnico di Milano, Milan, Italy
presented by L.Primavesi at the 2nd PCNS 10-13th September 2019, Bucharest, Romania as paper 3.3.
The aim of this work is to estimate the expected lifetime of a capacitor without basing reliability evaluation just on handbook based predictions. This approach is meant to overtake the non-homogeneous End of Life criteria proposed by the manufacturers and the difference between the real working condition in the application and the standardized condition of the criteria, as well.To obtain this result, the measured degradation of the electrical parameters of capacitors, such as Capacitance and ESR, is compared with a physical chemical model, whose constants are previously determined by accelerated stress tests (ASTs). (more…)