The main parameter affecting the performance of aluminium electrolytic capacitors is ripple current. The main influence of the ripple current is mainly the power consumption on ESR

which leads to the heating of capacitor and shortens its service life. In this paper

the ripple current of input filter capacitor of frequency conversion drive device and the influence of ripple current on the heating and life of electrolytic capacitor are analyzed and discussed. The technical measures to improve the ripple current capacity and the matters needing attention in selecting aluminium electrolytic capacitor in the design of frequency conversion drive set are proposed

which can be used by relevant designers for the reference in the manufacture and application of aluminium electrolytic capacitor.