Implementation and design of hybrid power module for DC power grid in paralleled applications

This paper presents storage-ability hybrid modules for DC paralleled grid system for flexibility and expansibility applications. A novel two-cascoded hybrid module is integrand with the renewable source and battery to achieve optimum power flow control. A two-loop positive feed-forward voltage control strategy in each module is proposed to manage the power flows in paralleled grid. The power flows are discussed and demonstrated under different operation modes. The experimental results from the power grid system is implemented to verify the theoretical analysis.