Power electronics medium-voltage (MV) systems must comply with the requirements defined in grid codes. These systems’ compatibility with the standards can be validated by specialized testing equipment: grid simulators. This paper presents a hardware in the loop (HiL) implementation and the simulation results of a MV multiphase DC/DC converter designed for MV DC grid emulation. By using ABB’s reliable, patented power converter hardware topology (US 10978948 B2) and by applying advanced control algorithms, the presented system can be used for special purposes, such as the emulation of fault events in a DC-grid used for the certification of other devices, or for other research goals. The presented concept of a power electronics DC-grid simulator (PEGS-DC) is characterized by high power capability and high voltage quality. In this paper, the general idea of a power electronics grid simulator applied for the testing of MV electrical systems is discussed. Then, details related to the PEGS-DC, such as its hardware topology and the applied modulation method are presented. Subsequently, the HiL setup is described. The main scope of this article focuses on model the description and presenting recorded HiL simulations.

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The Polish version of the article was published in “Roczniki Humanistyczne,” vol. 57 (2009), issue 2. After Poland regained independence the role of priests’ deanery conferences gained more importance. Regular deanery conventions of the clergy positively influenced pastoral work, established order in it as well as unifying its goals and methods. They also played an important role in solving the problems of local priests concerning their living standards. The bishop appreciated the significance of deanery conferences, judging them to be an important element of the system of management and control of the diocese. In 1926, a diocesan director of pastoral conferences was appointed, his aim being, among others, to set subjects for discussion at such conventions. The conferences became an important instrument for finding out about priests’ opinions and their attitudes as well as for moulding them by the diocesan authorities.