Adaptive backstepping sliding mode control for single-inductor double-output boost converter.

Area of Science:

• Electrical Engineering
• Control Systems
• Power Electronics

Background:

• Single-inductor double-output (SIDO) Boost converters are crucial for power management but suffer from cross-regulation and suboptimal dynamic response.
• Existing control strategies often struggle to balance these performance metrics effectively.

Purpose of the Study:

• To develop an advanced control strategy for SIDO Boost converters that minimizes cross-regulation and enhances dynamic response.
• To address the model dependency of exact feedback linearization (EFL) in converter control.

Main Methods:

• A nonlinear mathematical model of the SIDO Boost converter was established.
• An output function for exact feedback linearization (EFL) was constructed using inverse system theory.
• An adaptive backstepping sliding mode control (ABSMC) strategy was proposed, combining backstepping and sliding mode control.
• An adaptive reaching law was introduced to mitigate chattering and improve control gain adjustment.

Main Results:

• The proposed ABSMC strategy successfully linearized and decoupled the converter model.
• Chattering in the sliding mode control was significantly reduced.
• System stability was rigorously proven using the Lyapunov stability theorem.
• Simulation and experimental results demonstrated the superiority of ABSMC over conventional methods.

Conclusions:

• The adaptive backstepping sliding mode control (ABSMC) strategy offers a robust and effective solution for improving SIDO Boost converter performance.
• The method effectively tackles cross-regulation and dynamic response issues, validated by comprehensive testing.
• This research contributes a significant advancement in power converter control methodologies.