Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Complex equations of transition processes of asynchronous motor with controlled semiconductor switch on stator D.K. KOKHREIDZE From the equations of the transient processes of electric machines with a controlled semiconductor switch (CSS) on the averaged values of the variables are derived the general equations for a three-phase asynchronous machine with frequency control of the rotational speed. On the stator of motor is arranged a three-phase CSS; rotor is short-circuited. Change of revolutions is carried out by change of angular frequency by switching of stator phases. By solving of complex equations are obtained expressions for the stator and rotor currents, electromagnetic moment in the steady state with constant slip. At variable slip the nonlinear equations are solved using a computer. The corresponding equations in the coordinates d and q are compiled in a form convenient for their programming on a computer. Keywords: switch, electric machine, current complex, moment, sliding. Contacts: E-mail: dKokhreidze@mail.ru Pp. 28-31.