Tracking AC Signals with Zero Average Dynamics and Fixed Point Induced Control

This paper presents the theoretical and the experimental results of a direct current and alternating current buck converter configured as an inverter controlled by zero average dynamics and fixed point induced control techniques. The system is modeled and implemented in an electrical circuit in order to apply the control techniques and the tracking voltage at the output of the alternating current signals. The tests are based on comparing simulation and experimental results in order to identify the robustness of the circuit when subjected to disturbances. The results show that zero average dynamics and fixed point induced control techniques implemented digitally in a digital signal processor meet the requirements of fixed switching frequency, robustness, and good performance in alternating current signal tracking tasks, which are the benefits of this controller. The fixed switching frequency is evidenced in the results related to the non-saturated duty cycle achieving a very good commutation and reducing electromagnetic interferences. For high frequencies, the value of the inductive-capacitive filter should be decreased when tracking alternating current signals; however, this increases ripple in the signal and tracking errors.