Project 1

VOLTAGE=120V

POWER=150KW

CURRENT=POWER/VOLTAGE

              =150/120=1.25

NOW, CONVERTING INTO AMPS.

 1.25*1000=1250AMPS

NUMBER OF CELL IN PARALLEL=TATAL CURRENT / CELL CAPACITY

     =1250/3.5

=357.142

NUMBER OF CELLS IN PARALLEL 358

NUMBER OF CELLS IN SERIES=RATED VOLTAGE / CELL NOMINAL VOLTAGE

=120/3.6=33.33

NUMBER OF CELLS IN SERIES 34

QUESTION 2

Nominal voltage=7.2

Rated capacity=5.4

NOMINAL VOLTAGE OF THE BATTERY PACK=NO. OF CELL IN SERIES*NOMINAL VOLTAGE OF CELL

   =3*7.2=16.2

RATED CAPACITY OF THE BATTERY PACK =NO. OF CELL IN PARALLEL * RATED CAPACITY OF A CELL

=2*5.4=10.8