Abstract
DB-DTFC is a flux-observer-based high bandwidth digital, closed-loop torque control law that achieves the commanded torque at the end of each switching period. When flux estimation is accurate, instantaneous torque is fed back and unwanted pulsating torque is inherently minimized. This research presents real time flux-observer-based torque ripple estimation of a highly nonlinear synchronous reluctance machine (SynRM). Saturation and cross-saturation are incorporated directly into the control law and considered in each switching period. Deadbeat torque response and torque ripple reduction is demonstrated experimentally. FEM-simulations validate the torque ripple minimization.
Published Version
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