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DC microgrid is an effective solution to integrate renewable energy sources with conventional utility grid, especially for photovoltaic generation. A DC microgrid configuration based on modular photovoltaic generation system and energy storage devices, which features good redundancy and high efficiency, is investigated in this paper. In order to optimize energy utilization, a power management scheme...
Modular generation system, which consists of modular power conditioning converters, is an effective solution to integrate renewable energy sources with conventional utility grid to improve reliability and efficiency, especially for photovoltaic generation. A distributed control strategy based on improved dc bus signaling is proposed for a modular photovoltaic (PV) generation system with battery energy...
A single-stage inverter based on bi-directional forward converter with high frequency isolation for grid-connected application is proposed. The inverter is comprised of two improved bi-directional forward dc-dc converters, which are input-parallel and output-series (IPOS) connected. Each bidirectional dc-dc converter has two secondary rectifiers in series and the voltage stress on the freewheeling...
A novel bi-directional buck-boost converter used for battery charging and discharging cooperated with a three-level half bridge inverter in a UPS is proposed. The operation of charging and discharging can be controlled respectively, and the capacitor voltage balance can be achieved based on the peak current control. The operating principle and parameter design of the converter are analyzed in detail...
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