Control of the solid oxide electrolyzer

An electrolyzer system, comprising:

• stamps that each comprise a grouping of modular blocks, each of the modular blocks comprising:
• electrolyzer modules that each comprise an electrolyzer stack comprising a plurality of solid oxide electrolyzer cells configured to receive steam in combination with hydrogen, a steam recycle outlet configured to recycle a portion of the steam, and an electrolyzer module controller;
• and
• a power module comprising a power converter configured to provide power to the electrolyzer modules and a power module controller configured to control the electrolyzer module controllers;
• stamp level controllers configured to control the power module controllers of a corresponding stamp;
• and
• a site level controller configured to control the stamp level controllers and to calculate a stamp level hydrogen generation demand for each stamp based on a received site level hydrogen requirement,
• wherein:
• each of the stamp level controllers is configured to calculate a block level hydrogen generation demand for each modular block of a corresponding stamp, based on the stamp level hydrogen generation demand received from the site level controller;
• and
• each of the power module controllers is configured to calculate an electrolyzer level hydrogen generation demand for each electrolyzer module of a corresponding modular block, based on the block level hydrogen generation demand received from the corresponding stamp level controller.