CLEAR ALGORITHM FOR THE CALCULATION OF THE LINEAR INDUCTION MOTOR, BASED ON FIELD THEORY.

The authors discuss an (approximate) algorithm based on ″field theory″ consisting of relatively simple formulae for calculating the linear induction motor, which takes into account the skin effect, the transversal and longitudinal end effects and the connection between excitation and winding. It creates the connection with the equivalent circuits of the conventional induction motor, neglects the excitation of the primary iron body and the harmonics of the whole order of the travelling field, but describes the longitudinal end effect by two undamped field harmonic waves of fractional order. The calculations are compared with measurements carried out on a stationary motor, and characteristics of linear motors are calculated with the method presented.