IBC Sliding Mode Control Based on Nonlinear Disturbance Observer
LI Fengyang
HE Feng
Abstract：As the voltage provided by the vehicle fuel cell is lower than the bus voltage,DC/DC converter is required to boost the voltage.In order to improve the poor anti-interference and slow response of traditional DC/DC converters,a nonlinear distur-bance observer is designed based on the interleaved boost converter(IBC)to estimate the load disturbance and input voltage change in real time.Since the DC/DC boost converter is a nonlinear system,in order to avoid singularity,a nonsingular fast terminal sliding mode surface is established from the perspective of system energy,its convergence is proved by using Lyapunov criterion,and the hyperbolic tangent function is used to replace the symbolic function to reduce chattering.The simulation results show that compared with the nonsingular terminal sliding mode control(NTSMC),it reduces the steady-state error and has better anti-interference per-formance when the input voltage and output load change suddenly.
Keywords：interleaved boost converterdisturbance observersliding mode controlanti-jammingfuel cell
Publication Date：2025-12-20
Online Publishing Date：2026-03-09(First online date of this platform, not the publication date of the document)
Pages：6( 3577-3581,3589 )