Monovariable H∞ Robust Controller for a Permanent Magnet Synchronous Machine (PMSM)

Abstract—This paper deals with the modelling, analysis design and experimental validation of a robust control method for a permanent magnet synchronous machine (PMSM) supplied with a PWM inverter based on a monovariable H infinity standard controller. Under the influence of uncertainties and external disturbances, by a variation of ±10% of all motor parameters from the nominal values, the robust performance control problem is formulated as a monovariable H infinity standard scheme and solved by a suboptimal iterative H infinity strategy. This new design method is able to ensure the stabilization of the augmented system formed of the perturbed system and weighting filters with improved performance in face of parameter variation and external disturbances. A Simulation and experimental study was carried out to illustrate the effectiveness of the proposed method. KeywordRobust Performance, Monovariable Standard H infinity controller, Uncertainties, PMSM