System und Verfahren für einen Gleichstrom-Wechselstromwandler mit Spannungsschätzung

Details

Veröffentlichungs-Nr.

EP4773457

Anmeldetag

19. Dezember 2025

Veröffentlichung

8. Juli 2026

Rechtsraum

EP

IPC

H02J3/32

Abstract

A method of operating a power converter (10) for exchanging power with an alternating current (AC) grid (30) includes: commanding one or more switches to selectively conduct a current between a DC storage device (20) and the AC grid (30) via a series combination of a resistor and an inductor; measuring a current through the series combination of the resistor and the inductor; and determining, based on the measured current, an estimated grid voltage of the AC grid (30). The one or more switches are commanded based on the estimated grid voltage. The power converter (10) is operated in each of: a pre-synchronous mode before energy is exchanged between the DC storage device (20) and the AC grid (30), and a post-synchronous mode while energy is exchanged between the DC storage device (20) and the AC grid (30). Different techniques are used to determine the estimated grid voltage in the pre-synchronous mode and in the post-synchronous mode.

Anmelder

Firma

Magna International Inc.

Land

🇨🇦 Kanada

Fachgebiete