Porównanie wybranych regulatorów prądu w układzie sterowania silnikiem synchronicznym ze wzbudzeniem od magnesów trwałych

AC motor current controllers are much more complex than those used in DC drives, because not only does the value of the current needs to be controlled, but also the frequency. In addition, in static states, phase currents in stator windings of AC machines are quasi-sinusoidal, which makes the traditional controllers used in DC drivers (PI controllers) not the best solution (as they do not provide the best shape of the current). Complicated current controller algorithms can lead to better work in both static and dynamic states (which of course shoud be the main purpose of a control system), but can also lead to a decrease in total losses in both the inverter and the AC motor. The aim of this article is to compare several types of current controllers: PI, histeresis with constant sampling time, and predictive controller, in static and dynamic states, considering numerous criteria, as well as the losses and the electromagnetic torque ripple in the PM Synchronous Motor control system.