Dual-Loop Control Model for Power Electronics BOOST DC-DC Converter

This paper presents a MATLAB Simulink-based voltage outer-loop and current inner-loop closed-loop control model for BOOST DC-DC converters. The BOOST DC-DC converter is a widely used step-down DC-DC converter that transforms higher input voltage into lower output voltage to meet various application requirements. In this BOOST DC-DC converter implementation, the dual-loop control strategy plays a critical role in maintaining system stability and reliability by providing precise regulation of both output voltage and current. The control model implements a cascaded control structure where the outer voltage loop generates reference signals for the inner current loop, ensuring coordinated system response. Through MATLAB Simulink, we demonstrate the modeling approach using key blocks including PWM generators, PI controllers, and power electronics components with appropriate sampling rates and switching frequencies. The article details the fundamental principles of BOOST DC-DC converters and provides a systematic methodology for building the dual-loop control model in Simulink. We discuss practical techniques for optimizing control parameters through simulation-based tuning methods, including Ziegler-Nichols tuning and frequency response analysis, to achieve improved system performance metrics such as transient response and steady-state accuracy. By studying this material, readers will gain comprehensive understanding of BOOST converter operation principles, master key implementation technologies, and acquire practical skills for effectively applying these converters in real-world applications with optimized control strategies.