Power conversion system
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United States of America
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Jan 7, 2020
Grant Date -
Dec 21, 2017
app pub date -
Jun 15, 2017
filing date -
Jun 15, 2017
priority date (Note) -
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Abstract
A power conversion system includes a transformer, a power conversion device for travel, a power conversion device for auxiliary power sources, and an electrical storage device. The power conversion device for auxiliary power sources includes a first AC to DC conversion unit, a power conversion unit for AC loads, and a power conversion unit for DC loads. The power conversion unit for AC loads converts DC power into AC power and supplies it to an AC load. The power conversion unit for DC loads converts DC power produced through conversion by the first AC to DC conversion unit into DC power and supplies it to a DC load. The electrical storage device is connected to power lines connecting DC power output terminals of the first AC to DC conversion unit and DC power input terminals of both the power conversion units for AC and DC loads. When power supplied from a tertiary winding of the transformer to the first AC to DC conversion unit is reduced, the electrical storage device discharges power corresponding to the power reduction.
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