numerical-field calculations численно-полевые расчеты 4 621.313 2 harmonic analysis 2 magnetic flux linkage 2 чисельно-польові розрахунки 2 621.92 1 DC motor 1 EMF 1 FEMM 1 FEMM program 1 Lua script 1 armature core 1 asynchronous motor 1 asynchronous motor stator 1 characteristics 1 classical design 1 comparative analysis 1 design synthesis 1 differential leakage reactance 1 electromagnetic parameters 1 electromagnetic quantities 1 induction motor 1 magnetic field inductor 1 magnetic induction 1 magnetic power losses 1 mathematical model 1 modernization 1 phase relationships 1 stator and rotor windings 1