WATER ELECTROLYSIS SYSTEM AND OPERATION METHOD OF WATER ELECTROLYSIS SYSTEM

• Main Author: KONO TAKUMI
• Format: Patent
• Language: English; Japanese
• Published: 14.09.2023
• Subjects: APPARATUS THEREFOR; CHEMISTRY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; METALLURGY

To provide a water electrolysis system for correcting imbalances between an amount of a hydrogen gas generated by water electrolysis with a water electrolysis stack and an amount of hydrogen gas used for the boosting of a hydrogen boosting stack.SOLUTION: A water electrolysis system includes a control device (130). The control device (130) outputs a first current command value being a determinate current command value to one of a first power supply device (16) and a second power supply device (90). The control device (130) generates a second current command value being an indeterminate current command value based on a hydrogen gas amount in a gas-liquid separator, and outputs the second current command value to the other of the first power supply device (16) and the second power supply device (90).SELECTED DRAWING: Figure 3 【課題】水電解スタックによる水の電気分解によって発生する水素ガスの発生量と、水素昇圧スタックにおいて昇圧に用いられる水素ガスの利用量との不均衡を是正する水電解システムを提供する。【解決手段】水電解システムは、制御装置（１３０）を有する。制御装置（１３０）は、一定の電流指令値である第１電流指令値を、第１電源装置（１６）及び第２電源装置（９０）のうちの一方に出力する。制御装置（１３０）は、気液分離機内の水素ガス量に基づいて、不定の電流指令値である第２電流指令値を生成し、当該第２電流指令値を第１電源装置（１６）及び第２電源装置（９０）のうちの他方に出力する。【選択図】図３