Research on a direct voltage predicative control strategy for DC Distributed Power-Collecting and Cascaded Voltage-Boosting converter

Distributed power-collection cascaded boosting-voltage DPCB under the traditional double-loop PI control strategy has the disadvantages of complex parameter design and slow dynamic response. Therefore, this paper focuses on a direct voltage predictive strategy to enhance system dynamic performance. First, system equation is established based on the analysis of system operation mechanism. Second, predictive model is established by Eulerian discretization. Third, the optimal shift ratio is obtained by minimizing the cost function. Finally, the feasibility and effectiveness of the strategy are verified by simulation.