# Design of the Converter Prototype for Powering the Hydrogen Electrolyzer
## 6 Conclusions  
In this work, a complete circuit diagram of a prototype converter for powering a hydrogen electrolyzer was designed and constructed, along with a control algorithm and debugging. The topology of the proposed converter is based on a buck converter combined with an H-bridge. The design of the inverter part ensures a continuous current path. However, the most significant problem during the design was the incomplete knowledge of the nature of the electrolyte as a load for the designed converter, which will be the subject of measurements with the assembled converter.  
The measured parameters corresponded to the design requirements. We verified the functionality of the current sources at maximum power, and the results were satisfactory. The inverter properties also achieved the required parameters during the measurement with resistive load. However, it is questionable whether the converter can generate current pulses with a duration of less than 50 \(\upmu\)s with sufficiently good dynamic properties when supplying an electrolyzer at a higher frequency of pulses.  
This work presents the result of the diploma thesis, which is the basis for further development of a converter for the pulsed power supply of an electrolyzer with a power of approximately 5 kW. Further research will continue, and the goal will be to improve the parameters, increase the power, and evaluate the various modes of operation. The goal of using a prototype with a lower power is to investigate the effect of current pulses, their combinations, and their duration on the efficiency of water molecule decomposition in the electrolysis process. The use of a pulse opens possibilities for investigating the possible influence of this pulse on the release of gas bubbles from the electrode's surface and the change in the ion concentration in the vicinity of the electrode. These phenomena can positively affect the efficiency of the electrolysis process. The results of this research and measurements will be the subject of future publications.  
The developed power supply technology can be easily implemented into existing facilities that produce hydrogen using alkaline electrolysis. Investment in new power supply systems will reduce the final cost of hydrogen production and extend the life of the electrodes, making hydrogen more accessible to a wide range of consumers.  
Conceptualization, T.P. and P.S.; methodology, T.P.; software, T.P.; validation, J.T; formal analysis, M.P.; investigation, T.P., J.T. and P.S.; resources, T.P. and M.P.; data curation, P.S.; writing--original draft preparation, T.P.; writing--review and editing, M.P.; visualization, J.T.; supervision, P.S.; project administration, J.T.; funding acquisition, M.P. All authors have read and agreed to the published version of the manuscript.  
This work was supported by the following projects: APVV-22-0330 \"Research of a system for active and optimal management of electrical energy using battery storage system\" and VEGA 1/0314/24 \"Research of a system for active management of electrical energy using battery storage system\".  
Not applicable.  
The data presented in this study are available in the article.  
The authors declare no conflicts of interest.