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EN
In this paper, the criteria for the selection elements of the drive system water supply pump are presented. Currently, drive system with fluid coupling is used, which make a base for creating a new type of drive systems. Considered drive systems consists of squirrel-cage motor medium volatge and medium voltage invertor. The selection was dependent on qualitative and quantitative criteria, which describe technical, operating and economic properties. There were described three types of drive systems with medium volatge invertor. Moreover, application of new drive system with fluid coupling VORECON was considered. Based on charactristics of selected pump and predicted working point, calculated power input of drive systems, energy efficiency and distortion factor of input current. Obtained results allowed to quantify of mentioned drive systems. Further evaluation could be made based on propertis of drive system not inclued in this study. Presented method of drive system selection could be useful in practice design.
EN
In the article are presented based dependances wastes power in power transmission system of water feed pump with fliud flywheel (SH). On the basis this system, were calculated values of waste power in power transmission system of water feed pump with motor of 4 MW horse - power, 6 kV voltage and 3000 obr/min rotational, synchronus speed. As well was made calculations wastes power in power unit wit the same pump with motor controllable by means of frequency converter mean voltage (PCSN). Based on figures registration of wastes power in real power unit showed improvment efficiency energetic which have gained by use PCSN.
EN
In power station or combined heat and power station the biggest drive (in respect of power) is water supply pump drive. Under blackout conditions this drive is supplying from generator in power plant several hundreds kilometers away, which works as an island. Starting of this drive is difficult in such conditions. In this article potential application of a local generator set is presented.
PL
W artykule zostały przedstawione obliczenia, na podstawie których można sprawdzić efekty oszczędności energii elektrycznej, jakie można uzyskać po zastosowaniu przemiennika częstotliwości średniego napięcia do silnika klatkowego, zamiast sprzegła hydraulicznego.
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