Simulation Of Induction Motor Using Matlab

SIMULATION OF INDUCTION MOTOR USING MATLAB/SIMULINK There is seldom need to simulate an IM in arbitrary reference frame. For power system studies, induction machine loads along with other types of power system components are often simulated on a system’s synchronously rotating reference frame. But, for transient studies of adjustable speed drives, it is usually more convenient to simulate the induction machine and its converter on a stationary reference frame. The simulation of Induction Motor in the synchronously revolving frame has been developed. Inorder to obtain the stationary reference frame circuit, the value of e has been set to zero.

Schematic of modelling of induction motor

EQUATIONS 1 2 3 2 1 2

1 s vqd 0

2 3

0 1 2

e vqs

dt dFds dt dFqr dt dFdr dt

vas vbs vcs

s vqs

cos e sin e

sin e cos e

b vqs

e F ds b

Rs Fmq xls

Fqs

b vds

e F ds b

Rs Fmd xls

Fds

e vds

dFqs

1 2 3 2 1 2

b vqr

e

r

Fdr

Rr Fmq xlr

Fqr

r

Fdr

Rr Fmq xlr

Fdr

b b vdr

e b

Fmq

* xml

Fmd

* xml

iqs ids iqr idr

Fqs

Fqs

Fqr

xls

xlr

Fds xls

Fdr xlr

Fmq xls

Fds

Fmd xls

Fqr

Fmq xlr

Fdr

Fmd xlr

s vds

All the currents found above are in synchronously rotating reference frame Converting to stationary frame s iqs s ids

cos e sin e

sin e cos e

e iqs e ids

Equivalent circuit representation of IM in synchronous rotating frame

Equivalent circuit representation of IM in stationary rotating frame