Control System of the Modulation Inverters and Static Power Frequency Changers with Forecast

The paper deals with tracking control with forecast of modulation inverters and static power frequency changers. There is described a way and presented an exemplary circuit designed for emitting a forecast signal. Mathematical principles of the control under examination as well as exemplary currents and voltages, corresponding to the control, at the loads of the modulation inverter and static power frequency changers are presented. It is shown that with a high accuracy of the current in the tracking control system, a given control system may be reduced to a simple logic asynchronous automaton. Exemplary realization of the automaton as well as that of the microprocessoring control system are included. The latter carries out a task imposed on the considered automata and minimizes the conttent of subharmonic in the output current of the modulation inverter.