FPGA implementation of a Deadbeat Direct Torque and Flux Control Scheme for Induction Machines

Controlling an induction machine has been a difficult task since its invention, especially at low speed operation and during highly dynamic regimes, where the required torque/speed changes constantly. This paper aims to present the validation and implementation of a deadbeat direct torque and flux control scheme (DB-DTFC) for induction machines on a multilevel platform consisting on an FPGA, a real time microcontroller and a computer for monitoring and postprocessing. The presented method successfully achieves the desired torque and flux over one sample period and provides a good performance both in steady state and transient operation. This work contains both simulation and experimental results. Furthermore, it does not only consider the implementation of the control law but also the required observers.