NOISE FILTER - OMRON TATEISI ELECTRONICS CO

Title:

NOISE FILTER

Document Type and Number:

WIPO Patent Application WO/2021/166397

Kind Code:

A1

Abstract:

This noise filter is provided with: an active filter circuit that is connected to a receiving end of a power supply line of AC power supplied to a power conversion device from an AC power system or a DC power source linked to the AC power system or of a power supply line of DC power supplied from the DC power source and that reduces a harmonic component of transmission noise propagated through the power supply line to thereby output the noise to the power supply line; and a control unit that monitors the state change of input power inputted to a power source module generating driving power for an active element constituting the active filter circuit or the state change of the driving power supplied from the power source module, and that diagnoses the abnormality of a circuit operation of a circuit including the active element of the active filter circuit on the basis of the state change of the input power or the state change of the driving power.

Inventors:

ISHII TAKANORI (JP)
CHEN CHEN (JP)

Application Number:

PCT/JP2020/046902

Publication Date:

August 26, 2021

Filing Date:

December 16, 2020

Export Citation:

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Assignee:

OMRON TATEISI ELECTRONICS CO (JP)

International Classes:

H02M7/48

Domestic Patent References:

WO2018109801A1

2018-06-21

Foreign References:

JPH08182306A	1996-07-12
JP2001037084A	2001-02-09
JP2019176679A	2019-10-10
JP2003088099A	2003-03-20

Other References: