Wandler

Details

Veröffentlichungs-Nr.

EP3544163

Aktenzeichen

EP18163109

Anmeldetag

21. März 2018

Veröffentlichung

16. September 2020

Erteilung

16. September 2020

Rechtsraum

EP

IPC

H02M1/32H02M7/483

Abstract

A converter (20) comprises:a first terminal and a second terminal (24,26), the first terminal (24,26) configured for connection to a first network, the second terminal (34) configured for connection to a second network (40);at least one switching module (44) arranged to interconnect the first terminal (24,26) and the second terminal (34), the or each switching module (44) including at least one module switching element (46) and at least one energy storage device (48), the or each module switching element (46) and the or each energy storage device (48) in the or each switching module (44) arranged to be combinable to selectively provide a voltage source, the or each switching module (44) switchable to control a transfer of power between the first and second networks (40);the or each switching module (44) including a discharge circuit, the or each discharge circuit including a discharge switching element (50) and a discharge resistor (52), the or each discharge switching element (50) switchable to switch the corresponding discharge resistor (52) into and out of the corresponding switching module (44); anda controller (54) configured to selectively control the switching of the or each discharge switching element (50) in:a normal mode to switch the corresponding discharge resistor (52) into the corresponding switching module (44) at a first switch-in voltage level of the or each corresponding energy storage device (48) during a normal operating state of the converter (20) so that a normal operating current flowing in the corresponding switching module (44) is divided between the corresponding discharge resistor (52) and the or each corresponding energy storage device (48) the or each first switch-in voltage level being lower than a voltage level corresponding to a maximum voltage capacity of the or each corresponding energy storage device (44); anda fault mode to switch the corresponding discharge resistor (52) into the corresponding switching module (44) at a second switch-in voltage level of the or each corresponding energy storage device (48) during a fault operating state of the converter (20) so that a fault current flowing in the corresponding switching module (44) is divided between the corresponding discharge resistor (52) and the or each corresponding energy storage device (48), wherein the or each second switch-in voltage level is lower than the corresponding first switch-in voltage level.

Anmelder

Firma

General Electric Technology GmbH

Land

🇨🇭 Schweiz

Fachgebiete