Investigating the Frequency Characteristics of Pulse-Width DC/DC Converters with the Target-Oriented Control

The issues of ensuring the stability of pulse-width converters are examined, taking into consideration the dynamic nonlinearities of these systems. An automatic control system for a full-bridge DC/DC converter with a target-oriented control is presented. To estimate the coordinates of the desired mode fixed point, a moving average IIR filter is applied, which can be implemented using digital control systems. A structural dynamic model of an open-loop automatic control system is developed, which allows studying Bode diagrams to assess the stability margin in the phase of an open-loop system. The control system effectiveness for nonlinear dynamic processes based on the target-oriented control, built using moving average IIR filters is shown.