Control of a PMSM fed by a Quasi Z-source inverter based on flatness properties and saturation schemes

This paper deals with the one-loop flatness-based control of a Permanent Magnet Synchronous Machine fed by a coupled inductors Quasi Z-source Inverter. Among arguments in favor of this control strategy, it can be pointed out both the high mastering of the transient states and the high bandwidth of a one-loop control. Some improvements are proposed in this paper to saturate the state variables in order to prevent the system from having an uncontrollable behavior and thus to ensure its robustness when disturbances occur.