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Control of multiple power inverters for more electronics power systems: A review

With the development and utilization of renewable energy, the scaling of microgrid composed of distributed generation systems and energy storing devices, e.g, photovoltaic (PV), wind power, micro gas turbine, fuel cell, are becoming much lager. Research on control of multi-inverter parallel is the focus as the key technique, which can improve the reliability of microgrids. The inverters in the microgrid operate in parallel, which not only facilitates the expansion of the microgrid but also improves the reliability of the operation of the microgrid system in off-grid mode. The key to the parallel operation of the inverter is to achieve even distribution of the load current. In this paper, a comprehensive review on the control strategies of parallel-operated inverters is presented. Also, the detailed analysis, comparison, and discussion on the existing parallel control strategies are investigated.