Main use of Ultra Capacitor in EVs

ULTRA-CAPACITOR

Ultra capacitor plays very essential role in the whole system, so that the new technologies have the such abilities to control them. In the ultra capacitor system, the important contents are the DC-DC converter base on the insulated gate bipolar transistor [IGBT], smoothing aluminum inductor Ls, ultra capacitor and battery pack. During acceleration, the capacitor voltage of ultra capacitor permitted to set free from packed rate charge to one-third of its nominal voltage. During deceleration, the energy of capacitor which is released during acceleration period is improved back and charge up the ultra capacitor. Ultra- capacitor is mainly used because it store up 20 times more energy as evaluate to electrolytic capacitor as shown in figure 6. Ultra capacitor also improves the transient performance in EVs, also increase lifespan of batteries. Ultra capacitor provides additional supply to the electric vehicles and also extends the distance.

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