Patent
Power electronic transformer with true bipolar DC output ability and application control
Chen Wu,Shu Liangcai +1 more
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TLDR
In this paper, a power electronic transformer with true bipolar DC output ability was proposed, which can be combined with a cascaded H bridge converter or a modularized multi-level converter.Abstract:
The invention relates to a power electronic transformer with true bipolar DC output ability. By controlling a switch tube of a full-bridge/three-level combined converter (4), the balance of anode andcathode DC output voltage is realized, and the normal operation of non-fault pole DC output under a single pole fault condition is realized; by controlling a full-bridge converter (2) and the full-bridge/three-level combined converter (4), the original secondary side voltage of an isolation transformer (3) is adjusted, so that bidirectional transmission adjustment of input and output side power isrealized; a soft switch of a switch device in the converter can be realized, so that the operation efficiency of the converter is enhanced; the designed converter can be combined with a cascaded H bridge converter or a modularized multi-level converter to form the power electronic transformer with medium/high-voltage AC input and true bipolar DC output; and a DC converter with true bipolar DC output ability can be formed through series-parallel connection of modules.read more
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Solid-state transformer device with true bipolar low-voltage DC port and control method of solid-state transformer
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References
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