基于新型趋近律的船舶微网直流变换器控制策略

Control of DC Converter in Ship's Micro-grid Based on a New Approach Law

船舶微网中母线电压的稳定控制、功率负荷分配等问题一直是研究的热点。针对船舶直流变换器中等速趋近律控制方法趋近时间长、抖振严重的问题,提出了一种新型趋近律方法,用于改善系统的趋近状态和稳定性能。同时,将功率-电压下垂控制方法和新型趋近律控制器相结合,实现了船舶微网中直流变换器功率合理分配。仿真实验表明了所提控制策略的有效性。

Control of bus voltage stability and load power allocation is a hot research topic.With constant speed approach controlling,time for approach is long,and chattering is serious in a ship DC converter.To solve the problem,this paper proposes an approaching law aiming to improve the approaching state and make the system performance stable.By combining the theory of power-voltage droop control with a sliding mode controller,aparallel current sharing technique in the DC micro-grid is implemented.Simulation experiments show effectiveness of the proposed method.