Online Deadbeat Predictive Direct Torque and Active Flux Control for IPMSM Drive

This paper presents a new framework for the deadbeat(DB) predictive direct torque control for interior permanent magnet synchronous machines (IPMSMs). It proposes active flux as a control variable instead of stator flux along with torque. Unlike the classical deadbeat direct torque and stator flux control (DB-DTFC), the proposed idea of using active flux as a control variable provides an optimal deadbeat voltage vector to minimize the control errors throughout the torque/speed regions. It features simplicity over classical DB-DTFC. The complexity of solving the deadbeat solution is reduced substantially compared to classical deadbeat direct torque and stator flux control. In addition, the proposed method improves the performance at high-speed heavy load conditions since none of the physical quantities is required to neglect to simplify the DB voltage vector solution.