Shivani Rao
Independent Researcher
India
ABSTRACT
Modeling and simulation of DC–DC buck–boost converters are critical for predicting performance characteristics and optimizing design parameters in power electronics applications. This manuscript presents an analytical model based on averaged switch equations, incorporates nonidealities such as MOSFET on-resistance and inductor core losses, and validates the model through time-domain simulations in MATLAB/Simulink R2018a. Key performance metrics including voltage regulation, efficiency, and transient response are evaluated under varying load and input voltage conditions. A statistical analysis summarizing simulation data is provided in a single table. Simulation research examines the impact of control strategies—voltage-mode versus current-mode control—on converter stability and dynamic performance. Results demonstrate that current-mode control yields a 15 % faster settling time and 3 % higher efficiency compared to voltage-mode control under identical conditions. Five research objectives guide the study, focusing on model accuracy, loss characterization, control comparison, and design optimization. The manuscript concludes with recommendations for design improvements and suggestions for future work on digital control implementation.
KEYWORDS
DC–DC buck–boost converter, modeling, simulation, MATLAB/Simulink, control strategies, efficiency;
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