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"Dynamic Electrical Circuit Modeling of a Proton Exchange Membrane Elec" by Md Biplob Hossain, Md Rabiul Islam et al.

Besides producing hydrogen from surplus renewables, electrolyzers can also provide grid ancillary services like enhancing the stability, resilience, and robustness of the power grid. The paper presents a novel electrical circuit model for a proton exchange membrane electrolyzer (PEMEL) that has been validated using experimental data from a 400W electrolyzer. To demonstrate its adaptive capability, the proposed 400W electrical model is scaled up to a 1 MW stack, and this system is validated by comparison to another report of 1 MW stack experimental results. Results show that the developed model reproduces very similar step responses to those reported for the 400W electrolyzer and 1 MW stack. In this paper, the developed model was then used to evaluate the grid frequency response against disturbance, possible resilience advantages from frequency control services, and frequency sensitivity analysis for a modified IEEE-13-bus-distribution-feeder system. These simulations indicate that PEME ....

Activation Voltage Drops , Adaptation Models , Ancillary Service , Ircuit Stability , Requency Regulation Service , Frequency Response , Ntegrated Circuit Modeling , Power System Dynamics , Power System Stability ,

"Dynamic Electrical Equivalent Circuit Modeling of the Grid-Scale Proto" by Md Biplob Hossain, Md Rabiul Islam et al.

As the percentage of renewable energy sources grows, excess electrical power from renewables can be converted using electrolyzers to produce hydrogen, which can be stored, and later utilized by industries, homes, or the transportation system. Further, electrolyzers can also be utilized for frequency and voltage control to improve the stability of the power system. In this paper, a novel electrical circuit model for a 400W PEM electrolyzer is designed and validated using the experimental data from a reported paper for a 400W electrolyzer. To demonstrate its adaptive feature, the proposed 400W model is then scaled up to a 1 MW array by series and parallel connections, and the resulting system is validated by comparing it to another reported experimental results of a 1 MW stack. These results reveal that the developed model can reproduce very similar step responses to those obtained from experimental results from the reported 400W electrolyzer and the 1 MW stack. Finally, using the propos ....

Activation Voltage Drops , Adaptation Models , Ancillary Service , End Stability , Ircuit Stability , Frequency Deviation , Ntegrated Circuit Modeling , Mathematical Models , Power System Stability , Stability Analysis , Tility Scale Pem Electrolyzer ,