絶縁型直流電力給電装置 - ソニー株式会社

Title:

絶縁型直流電力給電装置

Document Type and Number:

Japanese Patent JP6500899

Kind Code:

B2

Abstract:

[Object] To provide an isolated DC power supply device capable of efficiently using ground fault detection for safety protection and communication in a DC power supply network. [Solution] Provided is the isolated DC power supply device that supplies direct current (DC) power via a positive electrode line to which a positive voltage is applied, a negative electrode line to which a negative voltage is applied, and a neutral line to which a signal is applied, the neutral line having an intermediate voltage between the positive electrode line and the negative electrode line as a neutral point, the isolated DC power supply device including: an amplifying unit configured to amplify the DC power; a receiving unit configured to detect an occurrence of a ground leakage current flowing to the positive electrode line or the negative electrode line, compare a voltage of the neutral point with a voltage of the signal of the neutral line and connect the neutral line with a ground point via a coil; and an impedance adjusting circuit configured to be installed between the amplifying unit and the receiving unit and adjust an impedance in a voltage range of the signal applied to the neutral line and in a voltage range other than the signal voltage range in a manner that the impedance is set higher in the signal voltage range than in the other voltage range.

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JPS51147734

LEAK DETECTING APPARATUS

Inventors:

Tadashi Morita

Application Number:

JP2016534389A

Publication Date:

April 17, 2019

Filing Date:

July 08, 2015

Export Citation: