Control for induction motor fed by five level inverter with sliding mode observer

In this paper, a technique of robust control for an induction motor is presented. This motor is fed by five-level inverter controlled by the triangulo-sinusoidal strategy with four bipolar carriers. The control algorithm uses robust regulators calculated by the H_infin loop shaping approach associated with indirect field oriented control. The sliding mode observer is used to observe the rotor flux in the induction motor. The simulation results show that the controllers stabilize the system and reject the disturbances when the system is subjected to uncertainties, which theirs norms are lower than the maximum stability margin