Isoliertes Paralleles Usv-System mit Fehlerorterkennung

Details

Veröffentlichungs-Nr.

EP3293852

Aktenzeichen

EP17188222

Anmeldetag

29. August 2017

Veröffentlichung

2. Juli 2025

Erteilung

2. Juli 2025

Rechtsraum

EP

IPC

H02J9/06G01R31/08G01R31/40

Abstract

An uninterruptible power supply (UPS) system (100, 300) is provided. The UPS system includes a plurality of UPSs (102, 104, 106, 302, 304, 306), a ring bus (118, 314, 410, 510) that electrically couples the UPSs (118, 314, 410, 510) together, a static switch (340, 342, 344) coupled between an associated UPS of the UPSs (118, 314, 410, 510) and the ring bus (118, 314, 410, 510), and a controller (200). The controller (200) receives current data representative of an inverter current and a load current associated with the associated UPS. An output capacitor (606) of the associated UPS is coupled to a node that conducts the inverter current and the load current. The controller (200) further calculates a measured current based on the received current data, determines a voltage of said output capacitor (606), generates a derived current based on the determined voltage and a predetermined capacitance of said output capacitor (606), compares the measured current and the derived current to identify a fault location, and controls said static switch (340, 342, 344, 408) based on the identified fault location.

Anmelder

Firmen

ABB Schweiz AG
General Electric Company

Land

🇨🇭 Schweiz

Fachgebiete