| Abstract |
Hydrogen production is energy intensive, and hence, the efficiency of the process is essential. Power electronics play an important role in energy efficiency of water electrolyzers. In general, the research requires real devices and handling of hydrogen. On the other hand, the water electrolyzer stack can be replaced by a power hardware-in-the-loop (PHIL) emulator that includes the same electrical characteristics as the real one. However, water electrolyzers are dynamic devices, and hence, the PHIL emulator should be able to realize the same bandwidth. Dynamics are important when studying DC power quality effects on water electrolyzers. The switching phenomena that can be seen after the utilized rectification are up to several kHz in frequency. This paper examines a dynamic PHIL test system for the purpose of emulation of water electrolyzers. |
