Power conversion device
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United States of America Patent
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Feb 17, 2016
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Feb 20, 2015
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Abstract
A power conversion device includes an input current sensor, an input voltage sensor, a power converter, an output voltage sensor for detecting an output voltage from the power converter, an output current sensor for detecting an output current value from the power converter, and a controller for controlling the power converter. The controller obtains an allowable current value that can be accepted from an external alternating current power source, and, controls the power converter so that the input current value does not exceed the allowable current value based on an input current value detected by the input current sensor. The controller detects an abnormality in the power conversion device based on the input current value, the input voltage, the output current value, the output voltage, and power conversion efficiency of the power converter.
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