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A novel five-level DC/AC bidirectional converter is developed and applied for interfacing renewable energy into the grid. The converter has reduced switching losses, voltage stress, harmonic distortion and electromagnetic interference caused by switching operation of power devices. The bidirectional operation feature allows it to interface with parallel dc-dc PV optimizers that requires a start-up...
The cascaded ac module integrated converter (MIC) based photovoltaic (PV) generation system features single stage power conversion with high efficiency, transformerless grid connection, and individual maximum power point tracking (MPPT). However, conventional centralized control method needs complex wire connection for transmitting data and command. In addition, the burden of the central controller...
DC micro-gird architecture and its control have been proposed in this paper. A bidirectional PWM rectifier is used as a backup for DC micro-grid to balance the power when the management ability of the local micro-grid is limited. A power management algorithm is also proposed based on this configuration. The DC zonal micro-grid proposed here has the advantage of maximum utilization of local distributed...
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