The master's thesis addresses the safety aspects of electric vehicle charging stations, related technical standards, legal requirements, and inspection procedures. The student has presented a comprehensive theoretical analysis of AC and DC charging system architectures, examined relevant European and Czech regulations and standards governing EV charging infrastructure, and discussed protective measures with particular emphasis on residual current devices. The thesis also includes the development of simulation models in MATLAB/Simulink for selected operating and fault scenarios and proposes a framework for EVSE safety inspections. The objectives defined in the thesis assignment were fulfilled in their entirety.

I consider the proposed approach and the achieved results to be correct and appropriate. The thesis successfully combines theoretical knowledge with practical aspects of EV charging station installation, operation, and inspection. I particularly appreciate the focus on safety-related issues, the analysis of hazards associated with incorrect selection of protective devices, and the use of simulation models to verify selected fault conditions and regulatory requirements.

The thesis contains a few minor shortcomings, mainly related to the limited extent of experimental validation on real charging equipment. However, these limitations do not diminish the overall technical quality of the work or the value of the obtained results.

The student’s approach to the thesis, level of independence, and use of consultations are described in detail in the consultant’s assessment, with which I fully agree. The consultant confirms the student’s regular consultations, active engagement, and participation in practical activities related to the implementation and commissioning of EV charging infrastructure.

The consultant's opinion is attached. Points proposed by supervisor: 93

The thesis addresses the safety requirements, inspection procedures, and legal frameworks of EV charging infrastructure. It is a technically demanding and highly relevant topic, and the author demonstrates solid understanding of both the electrical engineering aspects and the applicable European and Czech standards. The theoretical part is well structured and provides a comprehensive overview of AC and DC charging architectures, including Control Pilot signalling, Proximity Pilot, contactor logic, grounding arrangements, and residual current protection. The interpretation of requirements for RCD types and DC leakage detection is particularly strong. The legislative overview is also accurate and clearly presented.

The practical part is based on simulation models created in MATLAB/Simulink. These simulations are well documented and illustrate typical and fault conditions in EVSE systems, including DC leakage scenarios and behaviour of different RCD types. The modelling of test sequences inspired by commercial inspection equipment adds practical value. The thesis is written in clear English, with good graphical presentation and appropriate technical terminology. Grammar and syntax are handled very well, and no serious linguistic errors were identified.

Although the thesis is of high quality, several aspects limit its overall impact. The practical part relies almost exclusively on simulations, and the absence of real measurement data or deeper confrontation with field inspection experience reduces the applicability of the results. Some chapters, particularly the legislative section, are rather extensive and descriptive, which slightly disrupts the balance of the work and leaves less space for analytical discussion. The conclusion is comparatively brief and could offer more explicit recommendations for inspection practice or clearer synthesis of the findings. In a few places, the connection between simulation outcomes and specific normative requirements could be more explicitly articulated. These issues do not fundamentally diminish the technical level of the thesis.

The thesis meets the requirements for a master’s thesis and demonstrates the author’s strong technical competence. Despite the noted limitations, it represents a valuable contribution to the field of EVSE safety and inspection methodology. Topics for thesis defence:

1. Your work relies primarily on simulations. What differences would you expect between the simulation results and actual measurements at a physical charging station, particularly with regard to the detection of DC residual currents?
2. The legislative section of the work is quite extensive. Which specific requirements from European or Czech standards do you consider the most problematic or least clear-cut for inspection practice, and why?

Points proposed by reviewer: 90