Fuzzy logic based output power management system for distributed control of a paralleled high step-up DC-DC converter

In this paper, a distributed control strategy for parallel-connected dc/dc converters with output power management is proposed. The proposed system consists of parallel-connected input-parallel output of high step-up dc/dc converters and an additional module, enabling flexible operation. The redundancy among modules and the backup unit ensures continuous system operation even under unexpected faults, significantly improving system reliability. The proposed centralized control structure enables fast and flexible power management. The system can operate under both normal and fault conditions. The power management unit is controlled by a fuzzy logic controller designed to accommodate varying load demands. The operation of the converter and the performance of the proposed control strategy are verified through simulations under various scenarios. The power distribution of each module is analyzed according to different scenarios. The entire control system is implemented on a microcontroller board using hardware-in-the-loop simulation techniques to validate the feasibility of the proposed system and control method.