US 2019/0173396 A1 · Power Conversion Device and Power Conversion Device System

Abstract

Provided is a power conversion device with which it is possible to acquire a sign of a system stop before the system stops, and to minimize the nonworking time of the system. A power conversion device for converting DC voltage or AC voltage into AC voltage, the power conversion device being characterized by having an abnormality detection unit for detecting abnormalities in the power conversion device, a restart unit for stopping the power conversion device and automatically performing a restart when the abnormality detection unit has detected an abnormality, a restart recording unit for recording restart information of when the restart unit has restarted, and a sign diagnostic unit for inputting the restart information recorded by the restart recording unit and performing a sign diagnosis of the abnormality in the power conversion device on the basis of the restart information, the sign diagnostic unit performing the sign diagnosis on the basis of the number of restarts and outputting a sign diagnostic result.

Claims14

Dependent claims

A power conversion device that converts DC voltage or AC voltage into AC voltage, the power conversion device comprising:

an abnormality detection unit that detects abnormality in the power conversion device;
a restart unit that stops the power conversion device and automatically performs a restart when the abnormality detection unit has detected an abnormality;
a restart recording unit that records restart information acquired when the restart unit has restarted;
and
a sign diagnostic unit that inputs the restart information recorded in the restart recording unit and performs a sign diagnosis of the abnormality in the power conversion device on the basis of the restart information,
wherein the sign diagnostic unit performs the sign diagnosis on the basis of the number of restarts and outputs a sign diagnosis result.

3 more elements

A power conversion device system comprising a power conversion device that converts DC voltage or AC voltage into AC voltage, a management server, and a terminal connected via a communication network,

wherein the power conversion device includes:
an abnormality detection unit that detects abnormality in the power conversion device;
a restart unit that stops the power conversion device and automatically performs a restart when the abnormality detection unit has detected an abnormality;
a restart recording unit that records restart information acquired when the restart unit has restarted;
and
an interface unit that outputs the restart information to a communication network, and
wherein the management server includes:
a sign diagnostic unit that inputs the restart information recorded in the restart recording unit and performs a sign diagnosis of the abnormality in the power conversion device on the basis of the restart information, and
wherein the sign diagnostic unit of the management server performs the sign diagnosis on the basis of the number of restarts and outputs a sign diagnosis result to the terminal.

6 more elements

Dependencies are inferred from the claim text.

Power Conversion Device and Power Conversion Device System

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Power Conversion Device and Power Conversion Device System

Life of this patent

Abstract

Claims14