Power conversion device
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United States of America Patent
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Jan 22, 2019
Grant Date -
Jan 12, 2017
app pub date -
Feb 26, 2015
filing date -
Mar 5, 2014
priority date (Note) -
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Abstract
A power conversion device in which a plurality of converter cells are connected in series with one another. The converter cells each include two or more semiconductor devices, an energy storage element and a bypass element including a constituent element for setting the bypass element to be close-circuited by detecting abnormality of a converter cell, and including a constituent element for controlling, among the semiconductor devices, a semiconductor device connected in parallel with the bypass element to set in a turn-on state, at the same time when the bypass element is set close-circuited or in advance of its close circuit.
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