DC CIRCUIT BREAKER AND INTERRUPTING METHOD

• Main Author: MINOWA YOSHIBUMI
• Format: Patent
• Language: English; Japanese
• Published: 30.11.2023
• Subjects: BASIC ELECTRIC ELEMENTS; BASIC ELECTRONIC CIRCUITRY; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; EMERGENCY PROTECTIVE DEVICES; GENERATION; PULSE TECHNIQUE; RELAYS; SELECTORS; SYSTEMS FOR STORING ELECTRIC ENERGY

To realize a DC circuit breaker that properly interrupts the current when a large current flows and needs to be interrupted.SOLUTION: A DC circuit breaker (1) has a series-connected semiconductor switch (2) and a first switch (3), a first voltmeter (7) that measures the voltage on the secondary side of the semiconductor switch, and an ammeter (6) that measures the current flowing through the semiconductor switch, and the semiconductor switch is turned off when the first voltmeter detects a voltage below a predetermined value until after a predetermined time has passed since the ammeter detected a predetermined current value or higher.SELECTED DRAWING: Figure 1 【課題】大電流が流れた際に、遮断が必要な場合、適切に電流を遮断する直流遮断器を実現する。【解決手段】直流遮断器（１）は、直列接続された半導体スイッチ（２）および第１開閉器（３）と、半導体スイッチの２次側電圧を計測する第１電圧計（７）と、半導体スイッチに流れる電流を計測する電流計（６）と、を備え、電流計が所定の電流値以上を検出してから、所定時間経過した後まで、第１電圧計が所定の電圧値未満を検出していた場合に、半導体スイッチをオフにする。【選択図】図１