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A simplified speed observer was proposed previously by the author to estimate the rotor speed needed in control system of a drive with induction motor. Small error of estimated rotor speed was observed but errors of the stator current and rotor flux vector components appear in dependence of rotor speed. A new structure of the speed observer is proposed now with exact disturbance model and gain coefficients...
A control system for the induction motor fed by a PWM CSI based on a multiscalar model is presented in the paper. The current source inverter topology and principle of PWM modulation are taken into account. The vector model of the induction motor fed by CSI with output capacitors of inverter is presented in the paper. Complete equations of three multiscalar models of the induction motor are presented...
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