1. BY: AANCHAL SINGH ANKITA DUBEY AYUSHI SRIVASTAVA

2.  Correlation of conventional capacitor and ultra-capacitor

3.  ultracapacitors are a type of capacitor with remarkably high power and energy density  It was first developed by General Electric in 1957.  Ultracapacitors' first general use was as low-power, low-energy, long-life back-up power sources for consumer electronics such as VCRs.  small charge separation (10 angstroms) created by the dielectric separator

4.  Double layer mechanism

5. fast charging and discharging without degradation No release of thermal energy during discharge Deep discharges does not affect the performance

6.  conventional capacitors  ultracapacitors developed by standard oil engineers.  activated carbon was used in order to extend the interior surface area.  use of electrolyte & insulator.  double layer formation  working operation

7.  High efficiency.  Low ESR(equivalent series resistance).  Wide voltage range.  Wide temperature range.  Long cycle life  Long operational life  Life extension for other energy resources  Ease of maintenance  Straight forward integration

8. APPLICATION Back up power(UPS, PCB mounted backup, emergency lighting) Automotive engineering(regenerative braking) In telecommunication In wind energy solutions (voltage regulation) Quick charge application Peak pulse power requirement In consumer products(quick charge hand tools)

9. Various ultracapacitors K2 series ultracapacitor PC10 series ultracapacitor HC series ultracapacitor D cell series ultracapacitor

10. ADVANTAGES High pulse-power compatibility Performance in low temperature Charge discharge cycles Can be easily configured No moving parts State of charge can be easily determined Improved safety with low toxicity of materials Self discharge rate

11. CONCLUSION Ultracapacitors are now finding their way into automotive and utility applications as energy storage components. long life, with little degradation The ultracapacitor bank would supply a continuous flow of power during the critical seconds between a utility outage They are popular for "bridging" applications, in which backup power kicks in as primary systems fails.