Project 1

Q1)

a)Start up behaviour of induction motor represented in stationary d-q frame where w=0.

In that case rotor speed reaches approx. 377 rad/s on appying load speed decreases by some value and after removal of load it again increases.

b) Start up behaviour of induction motor represented in synchronous reference frame where w=wsyn (wsyn = 120f/p= (120*60)/4 = 1800 rpm = ((2*3.14)/60)*1800 = 188.5 rad/s.

c) Start up behaviour of induction motor represented in rotor reference frame where w=wr or the rotor speed.

d) Start up behaviour of induction motor represented in rotor flux reference frame where wslip is calculated and based on it wr is recalculated.

Rotor Flux Reference Speed = slip*wr = ((ws - wr)/ws ) * wr