Modeling and Investigation of Vector Controlled Induction Drive

Modeling and simulation of the AC induction motor drive controlled by the vector or field-oriented method and comparison results with scalar control is discussed. Motor speed is controlled by a torque-generated stator current component while maintaining the fluxgenerated current component steady. The torque-generated current component is corrected to track it set point in the current controller using its own dedicated PI controller. Set of differential equations of the induction motor for development of the model is derived. The motor model is developed in a stationary reference frame. Simulation results of two models, one with vector control and other with scalar control, are presented and analyzed. Ill. 6, bibl. 6 (in English; summaries in English, Russian and Lithuanian).