Week 9 Challenge

SOLUTION:

Aim : To Complete the energy management strategy model with battery UC and fuel cell for the positive power and distribute the power demand among these components. and Set simulation stop time to 598 sec.The output of the model should be the power request from UC, fuel cell and battery.

Power demand Condition Source

If UC-SOC >35% Ultra Capacitor

1) 0-9999

If UC-SOC <35% Fuel cell Battery

If Battery SOC>35% Battery

2) 10000-22999

IF SOC<35% Fuel cell

3) 23000 54999 No condition Fuel cell

If UC-SOC UltraCapacitor

4) 55000 and >35%

above

If UC-SOC <35% Fuel cell

Powerflow Flowchart:

Simulink model of EMS :

Subsystem of EMS :

Subsystem of Postive_power :

1)FC test :

• Here In propulsion subsystem positive power the power demand is tested for three components UC Fuel cell and Battery based on their operating ranges using interval test block as shown below
• For fuel cell test operating range set as from above 23KW to 55KW.

2) UC_Test :

• Here If the condition is true then the output of this block is 1
• So This output is checked with a switch block as input where if the input is 1 then this positive power is considered as fuel cell power request.
• For ultracapacitor test operating range set as from above 55KW.

3) UC_low test:

• Here If the condition is true then the output of this block is 1.
• Then This output is checked with a switch block as input where if the input is 1 then this positive power is again checked for UC_SOC condition
• If the SOC of UC is >= its minimum value then this positive power is considered as ultracapacitor power request.
• For battery test operating range set as from 0 to 23KW

4) Battery_test

• If the condition is true then the output of this block is 1.
• Then This output is checked with a switch block as input where if the input is 1 then this positive power is again checked for battery SOC condition
• So If the SOC of battery is >= its minimum value then this positive power is considered as battery power request

Subsystem of FC_Backup_for UC:

Subsystem of FC_Backup_for Battery:

SIGNAL BUILDER:

RESULTS: