The compatibility verification of batteries and battery chargers to ripples in battery float charge mode

Abstract

In this paper, it was received a dependence of battery current ripples rms from internal resistance of battery. It was got, that 6-pulse rectifier bridge is a current source in pulsating component. The conclusion is made that addition of L-C filter to battery charger decrease values of current ripples, but in the area of little internal resistances (for example, for AGM type battery) that value can exceed the allowable value. Based on received dependences, it was designed a method of current ripples calculation, that was verificated by experiments with real batteries and battery chargers. The difference between the results of calculation with method using and experiments doesn't exceed 10%. This method allows to check the compatibility of battery and battery charger, based on its catalog parameters.