Analysis of the Parameters Evaluation Errors Impact on the Quality of Induction Motor Control

This work is devoted to the analysis of the impact of the inaccuracy of the induction motor parameters evaluation on the accuracy of controlling its torque. The relevance of solving this problem is due to the fact that high-quality control of induction motors, which are currently the most common in the world, requires accurate knowledge of their parameters, and any error in their evaluation leads to a deterioration in the quality of regulation, which can lead to an increase in product defects. The paper proposes an approach for determination how inaccuracy of parameters evaluation would affect control quality, which is based on the use of numerical statistical modeling. As an example, the analysis of the influence of inaccuracy of parameter evaluation on the quality of direct and indirect field-oriented torque control was carried out. The analysis was carried out for different modes of motor operation, which are characterized by the values of the torque and operating speeds. Also, it was defined inaccuracy of which parameter would have the most significant impact on the accuracy of torque control.