Hilfsversorgung für Mittelspannungsgleichstromwandler mit einem in das Wandlersystem Integrierten Hilfstransformator

Details

Veröffentlichungs-Nr.

EP4742525

Anmeldetag

7. November 2024

Veröffentlichung

13. Mai 2026

Rechtsraum

EP

IPC

H02M3/335, H02M1/00

Abstract

The present disclosure relates to a converter (100) for transferring power from a medium voltage, MV, side to a low voltage, LV, side, comprising: a MV unit (20) at the MV side comprising a DC/AC cell (210) having a MV AC terminal (212), the DC/AC cell configured for generating an MV AC voltage (211) at the MV AC terminal (212) from a MV DC voltage; a LV unit (30) at the LV side comprising an AC/DC cell (310) having a LV AC terminal (312), the AC/DC cell configured for generating a LV DC voltage from a LV AC voltage (311) at the LV AC terminal; a first transformer cell (40) comprising a first transformer (401), the first transformer cell being electrically connected to the MV AC terminal (212) and the LV AC terminal (312), the first transformer cell configured to generate the LV AC voltage (311) at the LV AC terminal from the MV AC voltage (211) at the MV AC terminal; a second transformer cell (60) comprising a first resonant tank circuitry and a second transformer (603), the second transformer cell being electrically connected to the MV AC terminal (212), the second transformer cell configured to generate an auxiliary AC supply voltage (611) at one or more supply terminals (612, 621, 631) of the second transformer cell from the MV AC voltage (211) at the MV AC terminal (212), an auxiliary power circuitry (90) coupled to the one or more supply terminals (612, 621, 631) of the second transformer cell (60), the auxiliary power circuitry configured to provide auxiliary power (91) to one or more components of the MV unit based at least in part on the auxiliary AC supply voltage (611) at the one or more supply terminals (612). Furthermore, the present disclosure relates to an according method for operating a converter.

Anmelder

Firma

ABB SCHWEIZ AG

Land

🇨🇭 Schweiz