Abstract

The desirable features of batteries used in electric vehicles are high energy density and high power density, but this combination may result in an undesirable large size of battery bank. Ultracapacitors having high power density can be used to complement the high energy density batteries to form an excellent hybrid energy storage system. This article deals with design, simulation, and experimental validation of a power electronic interface between a lead acid battery bank, an ultracapacitor module, and a permanent magnet direct current traction motor. The objective is to achieve desired acceleration and deceleration with minimum stress on the battery bank.

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