Implementation of fast and accurate modeling method of electric drives

This paper deals with the method of fast and accurate modeling of electric drives. The existing methods of modeling of variable speed electric drives are considered, their strong and weak sides are shown. The proposed method is based on simplified model of the inverter with integration step size snapped to actual changes of the inverter state. Method takes into account dead time and voltage drops in transistors and diodes and obtained current curve is in good agreement with experimentally measured currents. It may be used for control system design and modeling of the drive in virtual instructional laboratories.