Container yard and feeding method
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United States of America Patent
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May 22, 2018
Issued Date -
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app pub date -
Feb 8, 2013
filing date -
Feb 8, 2013
priority date (Note) -
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Abstract
One three-phase transformer (71A) out of two paired three-phase transformers among three-phase transformers provided for respective feeder lines outputs, as operating power, first three-phase AC power of the same voltage phase as that of power-supply power. The other three-phase transformer (71B) out of the two paired three-phase transformers outputs, as the operating power, second three-phase AC power of a voltage phase shifted by π/6 from that of the power-supply power. The power storage device (4) of a crane apparatus (10) stores DC power supplied from a three-phase full-wave rectifier (1) to a common bus (B), and supplies the stored power to the common bus (B) upon reduction of the DC power.
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Family
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Cited Art Landscape
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