Fixed-Time Voltage Regulation for Boost Converters via Unit-Safe Saturating Functions

TL;DR

This paper introduces a fixed-time voltage regulation control method for boost converters using novel unit-safe saturating functions, improving stability and robustness against load uncertainties and disturbances.

Contribution

It proposes a new class of saturating functions for fixed-time control, along with adaptive observers and disturbance rejection techniques for boost converters.

Findings

Achieves fixed-time stability regardless of initial conditions

Reduces chattering issues in control implementation

Validated through simulations demonstrating effectiveness

Abstract

This paper explores the voltage regulation challenges in boost converter systems, which are critical components in power electronics due to their ability to step up voltage levels efficiently. The proposed control algorithm ensures fixed-time stability, a desirable property that guarantees system stability within a fixed time frame regardless of initial conditions. To tackle the common chattering issues in conventional fixed-time control methods, a novel class of function families is introduced. State observers and adaptive parameters are utilized to manage the uncertainties associated with unknown load resistance. Furthermore, a new disturbance observer is developed using the proposed function family, and its advantages and limitations are illustrated through comparison with existing designs. Finally, both non-real-time and real-time simulations are conducted to validate the effectiveness and deployability of the proposed control algorithm.