Abdelali EL AROUDI, Oswaldo LÓPEZ SANTOS

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Modeling and control of a two-Stage battery charger based on a three-Phase power factor correction Rectifier and a CLLC resonant converter

Objectives: 1. Model the frequency response of a three-phase boost rectifier as the first stage of a battery charger. 2. Model the frequency response of a CLLC resonant converter operating with constant input voltage and variable output voltage. 3. Design a controller for the three-phase boost rectifier to achieve power factor correction and output voltage regulation, and validate the results using PSIM. 4. Design a controller for the CLLC resonant converter to regulate the output current for battery charging, validated using PSIM. 5. Study the overall operation of the two-stage battery charger, including the cascade connection of the AC-DC and DC-DC stages. Methodology: The development of Objectives 1 and 2 aims to obtain accurate models of the two stages of the system. Based on these models, Objectives 3 and 4 focus on designing appropriate controllers to ensure stable and robust operation of each conversion stage independently. Finally, Objective 5 enables the integration of both stages, allowing the overall system to operate reliably and stably during a constant-current battery charging phase. MATLAB software will be used as tools to implement algorithms for analysis and design while PSIM will be used to validate separately the operation of the converters operating with the proposed controllers and the whole system operating charging a battery represented with a simplified static model.

03-MAR-2026

PFC rectifier, CLLC resonant converter

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