Passivity based control for induction motor drives with voltage-fed and current-fed inverters

In recent years, passivity based control (PBC) scheme has gained wide atten tion among various nonlinear control methods. Based on Euler-Lagrange equat ions of motion, controllers are designed from an energy point of view. In t his paper, the PBC is applied to induction motor (IM) speed drives with vol tage-fed and current-fed inverters, respectively. The stability of the over all system for the voltage-fed IM drive has been verified rigorously, but i t lacks for the current-fed IM drive. However, the controller structure of the latter is simpler than that of the former. Experimental results show th at the PBC scheme is successful in speed control application for both IM dr ives. There is no significant differences between two IM drives. The overal l system exhibits good robust performances in presence of motor parameter v ariations and load disturbances. (C) 2001 Elsevier Science B.V. All rights reserved.