International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Тhe widespread use of hydro power plants is well known. In addition to such plants that have been in operation for decades, there is currently an increased interest in the design and construction of new plants. In this regard, the accumulation of statistical data on the change in certain quantities and parameters for different periods of time and operating modes is important. On the other hand, subsequent processing of such accumulated data according to certain rules is possible. The main goal of this paper is statistical processing of data for a specific hydro power plant, in order to identify certain trends and prepare recommendations for improving activities.

Paper deals with low power photovoltaic system implemented by means of flexible module. Flexible modules powered by sunlight are really a very interesting and promising novelty, being one of the newer alternative energy sources. A selected technical solution with specific characteristics of the individual components is presented. Measurements with digital measuring equipment were performed and experimental results were presented. In conclusion, it is summarized that the tested flexible module gives good results.

The paper deals with the problems in the operation of non-linear loads, causing distortions in the sinewaves of voltages and currents. There is currently increasing use of variable frequency drives (frequency inverters) that drive electric motors and are such loads. The experimental results cover multiple measurements of voltages and currents harmonic components and the calculated values of the total harmonic distortion coefficients of voltage and current for each of the phases, supplying different loads. An analysis of the results obtained has been done and specific conclusions have been pointed out on the basis of the measurements carried out.

Paper deals with specifics of converting a conventional car into an electric one. The main stages of the conversion process are dealt concise but thorough. The findings are the basis for launching a large scale project with the necessary duration and financing, as a result of carrying out the necessary development activities and experiments will proceed to the development of a prototype, which will ultimately be realized. The overall focus is on research and application in the students’ learning process.