Deadbeat-direct torque & flux control motor drive using a single control law to minimize motor losses

This paper presents an implementation of deadbeat-direct torque and flux control (DB-DTFC) for AC induction machine drives that demonstrates nearly ideal properties over a wide range of flux and torque operating conditions and its application to motor loss minimization. A key attribute of DB-DTFC is that the control law is the same over the entire operating space, including steady-state and transient operation at the voltage limits. This DB-DTFC implementation allows for an additional degree of freedom to select a broad range of stator flux linkages at light to medium loads. This paper presents an implementation of DB-DTFC and experimentally demonstrates its performance over a full range of operating conditions and its application to minimizing machine losses.