Week 6 Fuel cell powered vehicle model
The nominal Fuel cell stack voltage is 45Vdc and nominal power is 6kW
The input given is a Drive cycle with 100ses of velocity data ,with spikes and deceleration.
The fluctuation in the fuel flow rate occurs after 10sec when fuel flow rate is bypassed ,it reaches maximum value around 85. as per the change in velocity in the drive cycle the fuel flow rises at 10sec from 50 to 60 and goes constant for few sec and takes a sudden peak for 3 ses. comparing the drive cycle an fuel flow rate both have spikes at 50 sec and close to 70sec.
The utilization of hydrogen (magenta) ,H2 after 10 sec is shown around a constant O2(Yellow) line.
Stack consuption of both air(yellow) and H2(Magenta) follow similar wave form with diifernt level of consumption the air consumption risesonly to 50 and drops to about 45 and continue is a steady manner, H2 reaches a max of 175 at 10sec drops to 150 and becames steady.
Stack efficiency also follows the impact of drive cycle as it varies after 10sec from 75% to 55% and there are continus variation in efficiency with loest begin 35%.it steadies down after 75 seconds.
Voltage and Current had a mirror images response , volatge from start to 10sec move from 70 to 20 and then rises to 55 and remains constant. current rises from 0 to almost 150 in 4 sec remains steady till 10 sec and drops to 110 without any variance further.
DC bus voltage apart from the spike at 10sec remains conatant at 100. and DC bus current rises fro 0 to 60in 5 sec and keeps constant till the end