Enhanced disturbance mitigation in nonlinear time delay systems with applications to double boost converters in...

Area of Science:

• Electrical Engineering
• Control Systems

Background:

• Input delayed double boost converters are susceptible to disturbances and saturation nonlinearity.
• Precise tracking performance is crucial for the efficient operation of these converters.

Purpose of the Study:

• To propose an enhanced Smith Predictor (ESP) based Modified Repetitive Control (MRC) technique.
• To achieve precise tracking performance for input delayed double boost converter models.

Main Methods:

• Derivation of inequalities using Lyapunov stability concept, formulated as linear-matrix-inequalities (LMIs).
• Analysis of LMI feasibility to guarantee asymptotic stability and design controller parameters.
• Validation through simulation analysis of the double boost converter model.

Main Results:

• The proposed ESP-based MRC technique ensures asymptotic stability and precise tracking.
• The method demonstrates superior accuracy in tracking and disturbance elimination.
• Performance is validated against existing active disturbance rejection methods.

Conclusions:

• The ESP-based MRC technique offers an effective solution for controlling input delayed double boost converters.
• The Lyapunov-based LMI approach guarantees system stability and controller design.
• This control strategy outperforms current methods in terms of accuracy and disturbance rejection.