Improved Droop Control of Independent Optical Storage DC Microgrid

Abstract

With the development of DC load, the DC microgrid is expected to become the mainstream topology of future distribution networks. To solve the problem of DC bus voltage stability of microgrid caused by complex disturbances such as intermittent energy and random load switching of photovoltaic DC microgrid, this paper first establishes the corresponding mathematical model based on the volt-ampere characteristics of DC microgrid and uses the characteristics of energy storage system to develop an adaptive droop control strategy to ensure that the bus voltage is constant. MATLAB / Simulink simulation examples and experimental tests verify the feasibility and effectiveness of the proposed method.