A method for operating an electrolysis system, related controller, power supply and electrolyzer system

Abstract

A method for operating an electrolysis system, related controller, power supply and electrolyzer system Abstract A method for operating an electrolysis system comprising an electrolyzer (7) and an on-load tap changing transformer (2) is provided. The system further comprises at least two line- commutated converters (3), preferably IGBT converters, wherein the on-load tap changing transformer (2) receives an electrical power (4) from an electrical power source (5) and provides an electrical power output (4) to the line-commutated converters (3), wherein the at least two line-commutated converters (3) are electrically connected in parallel between the on-load tap changing transformer (2) on a AC side and an electrolyzer (7) on a DC side and convert the electrical power output (4) into an electrical power input (6) for the electrolyzer (7), wherein the at least two converters (3) are connected to the same transformer AC bus, the method comprising in a ramping phase of the electrolyzer (7, 100) adjusting a voltage (UE) of the electrical power input (6) by means of only one of the parallelly connected converters (3) to a tap changing voltage (Utap), wherein the other parallelly connected converter is in a stand-by mode. Moreover, a related power supply, a controller, computer program and a related electrolyzer system are provided. FIG 8 Abstract FIG 8 20 25 27 97 64 12 D ec 2 02 5 2 0 2 5 2 7 9 7 6 4 1 2 D e c 2 0 2 5 A b s t r a c t F I G 8

Images