Abstract :
One form of application of induction motors in industry is the use of induction
motors on conveyors for transporting coal at Steam Power Electricity Plants. In the
automotive world, induction motors are widely developed as a driving force in hybrid
cars, electric cars with use on a small scale such as a means of tourism transportation
to the scale of luxury cars. The induction motor control is expected to make it easier
for users to adjust the speed of the induction motor in the control system by changing
certain parameter values without having to do manual settings in the field. Changes to
these values are only made through a graphical display on a computer.
This research began by calculating the parameters on the induction motor then
modeling the system of induction motor into state space equations. The system of state
space equations aimed to simplify the modeling of the induction motor which was
translated into direct and quadrature axes (dq) so that it was easy to analyze. Next,
designed on the induction motor control system with the addition of a lead compensator
which aimed to improve the response value in the system.
The results which were obtained in this study were to analyze the response
values for electromagnetic torque, rotor rotation speed, and stator current in which
that all of them were compared to changes in time. At the initial starting of an induction
motor with a lead compensator which was designed with reduction in overshoot about
15?, the resulting electromagnetic torque became higher with a maximum value about
28.33%. Then, when the induction motor had a load of 50 Nm the steady state speed of
the rotor rotation was higher about 1.9%, but the stator current about 12.95% which
was lower if it was compared to the system which was designed to reduce overshoot
about 10%.