THE EDGE EFFECTS INFLUENCE ON THE BRAKING FORCE OF LINEAR INDUCTION MOTOR

The main peculiarity when determining the difference between linear induction motors (LIM) and rotary motors is considered to be expressed in longitudinal and transversal edge effects. These effects in LIM appear due to the finite length and width of magnetic system of motors. Because of the mutual correlation of both effects, internal electric and magnetic asymmetry in linear motors is formed. Rotary type of motors does not have the characteristics of such asymmetry. The work presents the research carried concerning the influence of longitudinal and transversal edge effects on the braking force of a LIM. The theoretical study is based on spectrum analysis method for magnetic fields and on Maxwell equations and Fuorier integral changes. The same method is exercised in the assessment of the influence of longitudinal and transversal edge effects on the characteristics of a LIM and on transitional processes.