Regenerative energy management for pulse-loads in dual DC-AC micro-grids

The concept of regenerative energy management for pulse-loads in dual DC-AC micro-grids is investigated in this paper. Although this study is presented herein for electric ship power systems, the findings can also be applied for dual DC-AC micro-grids with flywheel (FW) energy storage systems. The mitigation of pulse-load effects is achieved via both the proposed system configuration and time-coordination between the occurrence of pulse-loads and kinetic energy-releases. In this paper, it is demonstrated that the kinetic energies of FW and prime-movers in an electric ship can be used to regulate the voltage of a DC distribution system in the presence of pulse-loads. This improves the stability of the overall system. The findings of this investigation are experimentally verified using a laboratory-scale micro-grid, and the test results are presented in this paper.