Linear Induction Motor at Present Time

Discusses constructions of linear electric motors and drives, areas of theoretical investigation and problems of practical application. A conventional structure of electric drive with reducer and rectilinear system without reducer, combined system with revolving and linear motor is considered. Comprehensive classification of linear induction motors application areas is carried out. Possible methods of theoretical investigation and advantages of spectral method is presented, some results of investigation into special modes and magnetic field distribution are given. Examination of non-symmetrical dynamic modes is based on generalized dynamic model in synchronous reference frame. Simulation results of linear induction motor at supplying by single phase voltage one winding, two windings, connected in series or series-parallel connected windings are carried out. Graphical distribution of magnetic field beyond inductor ends is obtained by computer simulation and the factors, influencing the distribution, are determined. Ill. 9, bibl. 10 (in English, summaries in English, Russian and Lithuanian).