Fully FPGA based predictive control of back-to-back power converter PMSG wind turbine systems with space vector modulator

Abstract

This work presents a fully FPGA based deadbeat-like predictive control scheme for back-to-back converter PMSG wind turbine systems with space vector modulator (SVM). A deadbeat-like predictive torque/current controller is used to control the machine side converter, while a deadbeat power control method in αβ frame is used to control the grid side converter. Both sides achieve nice steady state performances requiring few tuning efforts. Both the machine and grid side predictive controllers are realized on a commercial-off-the-shelf FPGA based platform. By using a single-cycle-timed-loop (SCTL) technique, the whole computation time is quite short (less than 4 μs), which makes the calculation time compensation not required. The effectiveness of the presented method is verified through experimental data.