A cost effective high-performance smart battery charger for Off-road and neighborhood EVs

In this paper, a high performance two stage smart battery charger has been presented for the Off-road and neighborhood electric vehicles. The proposed charger has been analyzed and its performance characteristics are presented. The charger eliminates both low and high frequency current ripple on the battery, thus maximizing battery life without penalizing the volume of the charger. Experimental and simulation results of a prototype unit converting universal AC input to 58 V DC at 650 W, achieving a peak efficiency of 93.2% at 240 Vin are given to verify the proof of concept, and analytical work reported in this paper.

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