PROJECT TITLE :

Decentralized Inverse-Droop Control for Input-Series–Output-Parallel DC–DC Converters

ABSTRACT:

Input-series-output-parallel dc-dc converters are suited for high-input voltage and low output voltage applications. This letter presents a decentralized inverse-droop management for this configuration. Each module is self-contained and no central controller is needed; thus, improving the system modularity, reliability, and flexibility. With the proposed inverse-droop management, the output voltage reference rises because the load becomes serious. While the input voltages aren't utilized in the inverse-droop loop, the power sharing as well as input voltage sharing and output current sharing will still be well achieved. Besides, the output voltage regulation characteristic is not laid low with the variation of input voltage. The operation principle is introduced, and stability of the strategy is additionally revealed based on tiny signal modeling. Finally, the experiment is conducted to verify the effectiveness of the control strategy.