1. Analysis and Design of a Bidirectional isolated Dc-Dc converter for fuel cell and super capacitor By batch 4 under the guidance of imran sir

2. Presentation outline ( Index ) Abstract Block diagram summary

3. Index Abstract Block diagram summary

4. Abstract objective Introduction

5. Abstract ------ objective Analysis and design of DC/DC converter Definition of a dynamic model for supercap and DC/DC converter

6. A DC-to-DC converter is a device that accepts a DC input voltage and produces a DC output voltage. Typically the output produced is at a different voltage level than the input Dc—to– Dc converter

7. Abstract ----- introduction Super capacitors merged with batteries (hybrid battery) will become the new super battery Fuel cells are used to convert chemical energy to electrical energy

8. Advantages of super/ultra capacitors Advantages of super capacitor High Density of Power Fast charging / discharging High number of life cycles

9. ACTUAL SYSTEM

10. ADVANTAGES Simple realization DRAWBACKS Great stress for battery No longer battery life with high absorbed currents Long charging time Few charge-discharge cycles

11. 11 PROPOSED SOLUTION

12. ADVANTAGES In case of failure is always guaranteed connection between the battery and the inverter. During braking, the controller decides which energy source recharge. This power system allows acceleration and deceleration of the vehicle with minimal loss of energy and minimizes the stress of the batteries. DRAWBACK We need to design a Bidirectional DC/DC converter.

13. Index Abstract Block diagram summary

14. Block diagram In this project we are using two modules one is generation of power from hybrid power supplies which is given to two sub modules one is super capacitors and the one more to the fuel cell (representation of a Lead acid battery ) the unison of this voltage is step up by using DC-DC converter this voltage is given to the MCU as an input supply.

15. The project Bidirectional isolated Dc-Dc converter for fuel cell and super capacitor is used in all the applications for power utilization in an efficient way.

16. Hybrid power supply Conventional power supply Photo voltaic panel Bi directional isolated charge controller Super capacitor Bi directional isolated charge controller To mcu 12v lead acid battery (representation of fuel cell) v/g sampler Dc-dc converter step up

17. adc At89s52 v/g sampler o/p Power on reset Force reset switch Crystal oscillator lcd Contrast controller Power supply to all sections regulator Filter ckt Bridge rectifier Step down t/f

18. Index Abstract Block diagram summary

19. Abstract Block diagram

20. Queries ?

21. Thank you