Power conversion device
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United States of America Patent
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Jul 19, 2016
Grant Date -
Nov 20, 2014
app pub date -
Dec 12, 2011
filing date -
Dec 12, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A propulsion control device is connected to each converter as a load. A carrier phase table, in which, when load states of propulsion control devices capable of being determined to be equivalent to each other are grouped in a same group, setting values of phase angles in the same group are given for each group, is provided in a phase-angle determination unit providing a desired phase angle between signal wave and carrier wave. The phase-angle determination unit refers to the carrier phase table based on a load state signal indicating a load state of each propulsion control device and an own-vehicle ID signal, determines a phase angle provided to each converter, and outputs it to a PWM control unit. The PWM control unit changes a phase angle of the carrier wave based on the phase angle determined by the phase-angle determination unit.
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