Fault tolerant control for induction motor in electrical vehicle

Induction motor is an important system component in integrated electrical vehicle working on different operating conditions. Due to these operations, robustness and performance of the control interfaces should be taken into account in the motor design. In this paper, we apply a new architecture for a fault tolerant control using Youla parameterization for an induction motor. The distinguished feature of proposed controller architecture is that it shows structurally how the controller design for performance and robustness may be done separately which has the potential to overcome the conflict between performance and robustness in the traditional feedback framework. A fault tolerant control architecture includes two parts: one part for performance and the other part for robustness. The controller design works in such a way that the feedback speed control of the induction motor will be solely controlled by the proportional integral PI performance controller for a nominal model without disturbances and H_∞ robustification controller will only be activated in the presence of the uncertainties or an external disturbances. The simulation results demonstrate the effectiveness of the proposed fault tolerant control architecture.