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With the development of the wind energy and in-depth study of DC grid, research on wind energy connecting to DC grid is piling up. After comparing the power losses, generating efficiency and control performance of two types of wind generator, the paper comes to a conclusion that directly driven permanent magnetic synchronous generator (PMSG) is the better type for DC grid connection. Then the author...
When the master-slave strategy is employed for the DC bus voltage control of a DC micro-grid, the voltage is determined by the constant DC voltage control converter. The DC voltage will be unstable when the active power is unbalance or the constant DC voltage control terminal is tripped off against faults. At this scenario, the DC voltage must be controlled through the coordinating control of the...
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