A New Approach of Offline Parameters Estimation for Vector Controlled Induction Motor Drive

Abstract

For efficient performance of any vector controlled drive, motor parameters are to be estimated with utmost accuracy. Offline and online parameter estimation techniques are generally used for estimating parameters. In this paper, the offline technique is adopted due to its advantage over latter technique. Under offline parameter estimation, the new strategy is simulated for estimating the machine parameters. Inverter test and single phase test are used for estimating parameters. Only three switches of the inverter are used for estimating parameters in inverter test and four switches in single phase test. These tests are easy to implement with no extra hardware, no mechanical job is required and equations are easy to understand and implement. These tests are simulated in MATLAB Simulink and parameters obtained are compared with actual parameters of machine model available in MATLAB Simulink.