Project 1

SOLUTION:

As shown in the above flowchart, there are two power sources mention as Fuel Cell (FC) and Battery.

The logic which is been told to develop in this is that if the Power demand from the vehicle is less than the minimum FC power than the FC must go on standby and the power should be supplied from the battery storage system and if the power demand is greater than the min FC power than the FC should be used and if the power demand of vehicle is More than the max power of FC than the Battery should supply the power.

The Simulink model is been developed for this as shown below,

For this the min FC power is kept between 0 to 20w

Operating region of FC is 20w to 90w

And max power demand is set till 90w to 100w.

The signal Builder block is used as the input to give the power demand required by the vehicle , the simulation is been run for 10 sec and the output such as FC Power , Battery Power and FC status are been studied by connecting it to the scope.

If we look inside the logic block of the Simulink the model is as shown below:-

The interval test block are used for setting the limits of the FC minimum , maximum and operation region , the limits are been set as discussed above. Then as per logic the switch block are been set and the output is been connected to FC or battery as mentioned in flowchart.

Signal Builder profile is as shown below:-

Result scope displaying FC power , battery power, Fuel cell status and actual power demand:-

From the above results we can easily know that, the minimum value from 0 to 20W, the battery give supply to the motor and values from 20W to 90W, the power is supplied from the Fuel cell and from 90W to 100W, again power is supplied from the Battery.

. Operating state: if the threshold is greater than 0 , then it displays the ON state if noy OFF state.