Kettenumrichter für Wasserstoff-Elektrolyseur-Gleichrichter in Grossen Elektrolyseur-Stationen

Details

Veröffentlichungs-Nr.

EP4300804

Aktenzeichen

EP22182533

Anmeldetag

1. Juli 2022

Veröffentlichung

3. Januar 2024

Rechtsraum

EP

IPC

H02M7/483H02M3/155C25B9/65H02J3/18

Abstract

A system (100) and a method for driving hydrogen electrolysis are disclosed. The system comprises a transformer (110) connectable to an electrical power grid (101) for galvanically isolating the system from the electrical power grid and for adapting an input voltage level associated with an alternating current received from the electrical power grid. The system further comprises a chain-link converter unit (120) comprising at least one chain-link branch (130) connected to an AC line of the transformer. The at least one chain-link branch comprises a plurality of serially-connected converter cell units (140) and an inductor (150). At least one of the plurality of serially-connected converter cell units comprises a first terminal (147) and a second terminal (149). The at least one of the plurality of serially-connected converter cell units is dedicated to individually provide a direct current to one electrolyzer unit (160) connected between the first terminal and the second terminal. The system further comprises a control unit (170) configured to control the direct current output from the at least one of the plurality of serially-connected converter cell units based on a reference value for driving the electrolyzer unit.

Anmelder

Firma

Hitachi Energy Ltd

Land

🇨🇭 Schweiz

Fachgebiete