Influence of rectifiers on the techno-economic performance of alkaline electrolysis in a smart grid environment

摘要: Abstract Alkaline electrolysis is a mature technology with long lifetimes and high reliability. However, the conventional electroylzer systems are only designed for constant operation at full load. Depending on employed rectifiers, they show reduced efficiencies in dynamic operation. Recent advances rectifier allow their smart grid environment volatile renewable energy generation. This study investigates techno-economic benefits of recently developed process current source combination an alkaline electrolyzer, compared to three frequently topologies. The simulation regards scenarios differently scaled electrolyzer units therefore, varying amounts surplus energy. Simulation results display increased amount annually produced hydrogen from 2250 MWhH2,LHV worst system 3050 new source, scenario highest scaling. In this case, larger more partial load here, outperforms all rectifiers generated as well economic viability. levelized costs always than 0.5 €/kgH2 cheaper, especially highly