Verfahren zur Steuerung eines Degradierten Wandlers und Wandlersystem

Details

Veröffentlichungs-Nr.

EP4304082

Aktenzeichen

EP22183431

Anmeldetag

6. Juli 2022

Veröffentlichung

5. November 2025

Erteilung

5. November 2025

Rechtsraum

EP

IPC

H02P29/028H02M7/487H02P21/04H02P21/00H02P1/46H02M1/14H02M1/32H02M7/5387

Abstract

The invention relates to a method for controlling an electrical converter (10). The electrical converter (10) is configured for converting a DC voltage from a split DC-link (16, 18) into a three-phase output voltage to be supplied to three output phases (a, b, c), wherein for each output phase, the electrical converter (10) has a changeover switch (20, 22, 24) configured for generating three voltage levels. The method comprises: calculating a degraded mode reference current (51) for each of the phases; determining a voltage reference (53) from the degraded mode reference current; and switching the electrical converter (10) to generate the voltage reference in the output phases; wherein the degraded mode reference current is (51) determined as a repeating sequence of six or less options over one fundamental period.

Anmelder

Firma

ABB SCHWEIZ AG

Land

🇨🇭 Schweiz

Fachgebiete