Control Strategy for Boost Converter Based on Adaptive Integral Terminal Sliding-mode Control

Abstract

The control system for the fixed-frequency boost converter does not consider the situation from the input voltage and the unknown load, which makes the system vulnerable to external disturbances, resulting in slow system response and large output voltage error. The state space equation of the boost converter is established by the state space averaging method, and the adaptive control rate of the load resistance and the input voltage is designed by the adaptive control, which effectively reduces the influence of the disturbance on the system output. The sliding mode surface adopts the integral terminal sliding mode surface, and the isokinetic approach law control is used to effectively reduce the influence of chattering and improve the dynamic response speed and robustness of the system. The simulation experiment proves the validity and reliability of the integral terminal adaptive sliding mode control.