Contents I. Introduction
To obtain good performance from a vector-controlled induction motor (IM) drive it is very important to have an accurate knowledge of the electrical and mechanical parameters of the machine under all operating conditions [1]. However, in reality, the motor parameters are only approximately known either from manufacturer's data or from standard tests, and they are known to vary under different operating conditions, particularly in the field-weakening regime [2], [3]. Furthermore, in medium–high-power drives' applications [4]–[11], adequately rated power supplies (voltage, current, and frequency) need to be available to perform the standard tests for machine parameters' identification. Therefore, the use of alternative methods is a desirable solution in these cases.
