Optimal strategy for energy management of DC multi-microgrids considering power loss
Journal of Power Electronics(2022)
Abstract
DC multi-microgrids (DC MMG) improve power supply efficiency. However, they also increase transmission power loss. To reduce the power loss of the DC MMG, an optimization strategy of energy management with an adaptive distribution coefficient is proposed in this paper. By adjusting the power distribution coefficient of each DC microgrid (DC MG), the power distribution of the DC MMG is optimized to reduce power loss. In addition, to quickly predict changes of the DC MG power, the traditional finite control set model predictive control (FCS-MPC) is improved. The duty cycle of the converter is directly calculated according to the change of the current. Finally, experimental verification and comparison show that the proposed method can minimize the power loss of a DC MMG and speed up the balance of power.
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Key words
DC multi-microgrid, Power loss, Adaptive allocation coefficient, Coordinated control, Finite set model prediction control
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