Schutzschema für Stromwandler mit Kaskadierten Zweipoligen und Einpoligen Leistungshalbleiterbauelementen

Details

Veröffentlichungs-Nr.

EP3787166

Aktenzeichen

EP19194929

Anmeldetag

2. September 2019

Veröffentlichung

1. Mai 2024

Erteilung

1. Mai 2024

Rechtsraum

EP

IPC

H02M1/32H02M7/487H02M7/483H02M1/00

Abstract

A protection circuit for a power converter with cascaded bipolar and/or unipolar semiconductors is provided.The protection circuit comprises at least one comparator circuit which is adapted to monitor a voltage characteristic on a collector-emitter path of at least one semiconductor which is arranged in a polarity selection stage of the power converter and/or to monitor a voltage characteristic on at least one capacitor, which is arranged in the power converter.The at least one comparator circuit is further adapted to output an electrical signal, representing the voltage characteristic of the semiconductor and/or the at least one capacitor to at least one evaluation unit. The at least one evaluation unit is further adapted to evaluate the result from the at least one comparator circuit and to deactivate the semiconductors in case that the voltage characteristic of the semiconductors and/or the capacitors deviate from a predetermined threshold.

Anmelder

Firma

ABB Schweiz AG

Land

🇨🇭 Schweiz

Fachgebiete