Damping of torsional vibrations in electric drive with AC motor

The paper presents a problem of mathematical modelling, parametric identification and speed control of inverter drive system with elastic connection of rotor and load mass. The non-linear and linear structures of speed control system with conventional and state controllers were analyzed. The non-linear and linear type input-output mathematical models along with results of the parametric identification and control of inverter drive system were presented. Box's static optimization method was used to identify the parameters for the object's mathematical model. Controller parameters were calculated numerically in non-linear and analytically in linear systems. Identification and control algorithms were implemented on a laboratory stand with 1.1 kW induction motor.