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US 2025/0030355 A1Published application
Energy supply device for an electrolysis unit and electrolysis installation
AssigneeSMA Solar Technology AG
InventorsRalf Juchem, Andreas Falk, Bernhard Voll
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Abstract
The disclosure describes an energy supply device for an electrolysis unit and an electrolysis installation comprising the energy supply device and an electrolysis unit connected thereto.
Claims16
An energy supply device for an electrolysis unit, comprising:
- a grid connection terminal configured to connect to an energy supply grid,
- a DC voltage output terminal configured to connect to an electrolyzer of the electrolysis unit,
- an auxiliary power output terminal configured to connect to at least one auxiliary unit of the electrolysis unit,
- a first multi-winding transformer having a primary side, connected to the grid connection terminal, and a secondary side,
- a second transformer with a primary side, connected to the grid connection terminal, and a secondary side,
- wherein the secondary side of the first multi-winding transformer has a first secondary-side connection and a second secondary-side connection galvanically isolated therefrom,
- wherein the first secondary-side connection provides a first voltage amplitude Û1 and is connected to the auxiliary power output terminal, and
- wherein the second secondary-side connection provides a second voltage amplitude Û2 and is connected to an AC connection of a first AC/DC converter, a DC connection of which is connected to the DC voltage output terminal, and
- wherein the secondary side of the second transformer has a third secondary-side connection providing a third voltage amplitude Û3 and is connected to an AC connection of a second AC/DC converter, a DC connection of which is connected to the DC voltage output terminal, and
- wherein the primary side and the first secondary-side connection of the first multi-winding transformer or the primary side and the secondary side of the first multi-winding transformer do not comprise a tap changer.
7 more elements
An electrolysis installation, comprising:
- an electrolysis unit with an electrolyzer and at least one auxiliary unit for a chemical supply of the electrolyzer, and
- an energy supply device comprising:
- a grid connection terminal configured to connect to an energy supply grid,
- a DC voltage output terminal configured to connect to the electrolyzer of the electrolysis unit,
- an auxiliary power output terminal configured to connect to the at least one auxiliary unit of the electrolysis unit,
- a first multi-winding transformer having a primary side, connected to the grid connection terminal, and a secondary side,
- a second transformer with a primary side, connected to the grid connection terminal, and a secondary side,
- wherein the secondary side of the first multi-winding transformer has a first secondary-side connection and a second secondary-side connection galvanically isolated therefrom,
- wherein the first secondary-side connection provides a first voltage amplitude Û1 and is connected to the auxiliary power output terminal, and
- wherein the second secondary-side connection provides a second voltage amplitude Û2 and is connected to an AC connection of a first AC/DC converter, a DC connection of which is connected to the DC voltage output terminal, and
- wherein the secondary side of the second transformer has a third secondary-side connection which provides a third voltage amplitude Û3 and is connected to an AC connection of a second AC/DC converter, a DC connection of which is connected to the DC voltage output terminal, and
- wherein the primary side and the first secondary-side connection of the first multi-winding transformer or the primary side and the secondary side of the first multi-winding transformer do not comprise a tap changer,
- wherein the DC voltage output terminal of the energy supply device is connected to the electrolyzer and the auxiliary power output terminal of the energy supply device is connected to the at least one auxiliary unit of the electrolysis unit.
10 more elements
Dependencies are inferred from the claim text.