Considering the power quality in the fower-hardware-ln-loop simulation of the water electrolyzers

Considering the effect of current and voltage frequency content in the power-hardware-in-loop (PHIL) simulation of water electrolyzers is studied as the AC components may cause additional losses in the electrolyzer stack. A transistor based power supply is used to excite DC current with selected AC components for an alkaline electrolyzer and a PHIL simulator. The practical current and voltage waveforms are analyzed, and the possibilities to take the power quality aspects in consideration in the PHIL simulation is discussed.