Modified Droop Method Based on Master Current Control for Parallel-Connected DC-DC Boost Converters

Muamer M. Shebani, Tariq Iqbal, John E. Quaicoe
2018 Journal of Electrical and Computer Engineering  
Load current sharing between parallel-connected DC-DC boost converters is very important for system reliability. This paper proposes a modified droop method based on master current control for parallel-connected DC-DC boost converters. The modified droop method uses an algorithm for parallel-connected DC-DC boost converters to adaptively adjust the reference voltage for each converter according to the load regulation characteristics of the droop method. Unlike the conventional droop method, the
more » ... current feedback signal (master current) for one of the parallel-connected converters is used in the inner loop controller for all converters to avoid any differences in the time delay of the control loops for the parallel-connected converters. The algorithm ensures that the load current sharing is identical to the load regulation characteristics of the droop method. The proposed algorithm is tested with a mismatch in the parameters of the parallel converters. The effectiveness of the proposed algorithm is verified using Matlab/Simulink simulation.
doi:10.1155/2018/9819787 fatcat:e3rqt3xeljh3birivtsjumcw3e