Run the AC motor simulation using $3$ possible combinations for the velocity PI controllers $($keeping the current PI controller as it is$)$ and answer the next three questions:

COMBINATION $1$: Velocity loop: Kp $=0\mathrm{.}1$; $Ki=0\mathrm{.}1.$

COMBINATION $2$: Velocity loop: Kp $=140$; $Ki=100.$

COMBINATION $3$: Velocity loop: Kp $=14$; $Ki=0\mathrm{.}1.$

Which one of the three possible combinations has the lowest RMSE value for the velocity loop?

COMBINATION $1$

COMBINATION $2$

COMBINATION $3$

COMBINATION $1$

COMBINATION $2$

COMBINATION $3$