Abstract
The Linear Induction Motor is a special purpose electrical machines it produces rectilinear motion in place of rotational motion. By using D-Q axes equivalent circuit the mathematical modelling is done because to distinguish dynamic behavior of LIM, because of the time varying parameters like end effect, saturation of core, and half filled slot the dynamic modelling of LIM is difficult. For simplification hear we are using the two axes modelling because to evade inductances time varying nature it becomes complex in modelling, this also reduces number of variables in the dynamic equation. Modelling is done using MATLAB/SIMULINK. LIM can be controlled by using sliding model control, vector control, and position control.
Highlights
LINEAR INDUCTION MOTOR the name itself says linear so it produces linear motion
Because of the occurrence of end effects the dynamic modelling of these kind of motors are complicated to model
The Linear Induction Motor was modelled, by considering end effect the behavior of the motor under transient condition was observed when a 30N load force is applied in the duration from 0.5 sec to 1.2 sec
Summary
LINEAR INDUCTION MOTOR the name itself says linear so it produces linear motion. In industries these LIM are usually used for automated systems. For understanding motor behavior during disturbance of load and at normal condition motor modelling is done, by using rotor reference frame, arbitrary reference frame etc. It have many popular performance features, together with high-speed operation, during starting it has high thrust force, mechanical construction is simple, silence operation, Simple structure, and easy maintenance, low cost, it do not require any gear mechanism, good reliability, reduction of mechanical losses. LIM’s are used in many applications in electromechanical conversion units such as Elevators, Baggage handling, Automatic sliding doors, Accelerators, Horizontal conveyance systems, Cranes, Material handling and storage, actuator, transportation, piston pumps, electric traction, automotive control and robotics etc
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