A Power Buffer in an Electric Driveline: Two Batteries Are Better Than One

<table>Power delivered to the wheels (black) by a 4 kW battery (green), power buffer (grey), and ICE (brown) during the EPA FTP-75 standard drive cycle. The battery and the power buffer have the same 0.25 kWh rating. The negative power mismatch (red) occurs when the SESU is fully loaded and is unable to store regenerative braking.</table>

International Scholarly Research Notices

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Figure 14

Figure 14: A Power Buffer in an Electric Driveline: Two Batteries Are Better Than One 