A little more than life presumption method and a little more than by the life

摘要

PROBLEM TO BE SOLVED: To estimate the remaining life of a capacitor and electric or electronic equipment equipped with this capacitor by reflecting various factors causing ambient temperature change.;SOLUTION: A remaining life estimation method, which estimates the life of the capacitor by performing the life estimation operation based on Arrhenius' law and estimates the remaining life of the capacitor from current time to the life end using the estimated life, is carried out by using: as the ambient temperature estimation value of the capacitor as the target of the life estimation operation, a value obtained by adding an intake air temperature equivalent value of the electric or electronic equipment incorporating the capacitor and an ambient temperature raise estimation value of the capacitor according to a load factor of the electric or electronic equipment; an estimated life correction value obtained by correcting the estimated value obtained by the life estimation operation using an operation factor of the electric or electronic equipment; the starting time of the operation of the electric or electronic equipment; and the current time.;COPYRIGHT: (C)2011,JPO&INPIT