Estimation of Electrical Parameters of the Single-, Double- and Triple-Cage Models of Induction Motors Using Manufacturer Data

Abstract

We propose a method to estimate the electrical parameters of the single-, double- and triple-cage models of induction motors using manufacturer data, such as starting torque, breakdown torque, rated torque, starting current, rated current, power factor, and efficiency. The method is based on a numerical optimization problem involving the equations of the single-, double- and triple-cage steady-state models and manufacturer data available to end-users usually in form of data sheets. To validate the method, we compare theoretical with experimental results obtained for a 75 kW motor. Both types of results prove the validity and accuracy of the proposed method to assess the main performance characteristics of induction motors.