| 摘要 |
PURPOSE: A method for controlling an energy storage system having a super capacitor is provided to prevent a voltage dropping phenomenon of a battery and lengthen a lifetime of the battery by forming the energy storage system with a super capacitor and the battery. CONSTITUTION: A DC/DC converter is inserted between a battery and an inverter. The DC/DC converter is connected in parallel to the battery. A super capacitor is serially with the DC/DC converter. The super capacitor has storage capacity larger than the storage capacity of the battery. An energy storage system is formed by connecting the super capacitor in parallel to the battery in an electric vehicle. The DC/DC converter is adhered to an output terminal of the super capacitor in order to apply the same voltage to the super capacitor and the battery. The super capacitor has a buffering function to prevent a variation of power of the battery.
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