新型混合储能功率变换器及控制策略研究

Research on New Hybrid Energy Storage Power Converter and Its Control Strategy

单一的能量型或功率型储能无法兼顾高功率密度、高能量密度、长使用寿命等多方面的要求,因此提出一种新型的混合储能功率转换系统(PCS)拓扑,并提出采用基于并网电压前馈的电流加权平均控制算法实现能量的双向变换。与混合储能已展开研究相比,节省了PCS等附属开关设备的投资,并通过仿真与试验验证了所提拓扑及控制策略的有效性。

A single energy-type or power-type energy storage can not meet the multiple requirements,such as high power density,high energy density,long service life and so on.Therefore,a novel hybrid energy storage power conversion system(PCS)circuit topology was proposed,and a current-weighted average control algorithm based on grid-connected voltage feedforward was proposed to achieve the bidirectional transformation of energy.Compared with the existing research on hybrid energy storage,the investment of auxiliary switchgear such as PCS is saved.Finally,the effectiveness of the proposed circuit topology and control strategy was verified by the simulation and experiment.