An energy storage system for improving performance of hybrid electric vehicles (HEV) is presented. The hybrid power system consists of batteries and supercapacitors. The supercapacitor contributes to the rapid energy recovery associated with regenerative braking and to the rapid energy consumption associated with acceleration in electric vehicles. This power system allows the acceleration and deceleration of the vehicle with minimal loss of energy and minimizes the stress of the main batteries by reducing high power demands away from the batteries. It also leads to longer battery life by extracting energy at a slower average rate. The total weight of hybrid system is lighter than that applied only batteries, so that the efficiency of vehicle is increased. In this paper, the equivalent model of supercapacitor is included. This model can be used in simulating for automotive power systems, e.g. the voltage response and energy efficiency. The soft switching bidirectional DC-DC converter is used to connect the supercapacitor with the battery for the controlled instantaneous electric power flow. The hybrid power system is analyzed and verified by experimental results from the prototype system.
A development of an energy storage system for hybrid electric vehicles using supercapacitor
Entwicklung eines Energiespeichersystems für hybride Elektrofahrzeuge mit Ultrakapazitäten
2002
11 Seiten, 13 Bilder, 3 Tabellen, 5 Quellen
Conference paper
Storage medium
English
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