Indices to detect Hopf bifurcation in Induction motor drives

TL;DR

This paper introduces indices to detect and predict Hopf bifurcation-induced oscillations in induction motor drives controlled by IFOC, aiding in stability analysis and prevention of system instability.

Contribution

The paper proposes novel indices for early detection of Hopf bifurcation in IFOC induction motors, enhancing stability monitoring methods.

Findings

Indices successfully detect Hopf bifurcation points.

Oscillations increase near bifurcation points.

Indices provide predictive capability for stability loss.

Abstract

The loss of stability of induction motor controlled by Indirect Field Oriented Control (IFOC) is a matter of great concern of operators and design engineers. This paper reports indices to detect and predict stability problem such as system oscillations. Oscillations as a result of loss of stability, due to Hopf bifurcation, for different parameter values of IFOC motor are studied using the proposed indices.