Frequency converter – asynchronous motor – pump – pressure piping system mechanical specifications

In the article, modes of energy and resource efficiency of the technological process corresponding to the requirements of the "frequency converter-asynchronous motor-pump-pressure pipe" system as a control object have been developed. The mechanical characteristics of each element in the "frequency converter-asynchronous motor-pump-pressure pipe" system are calculated and built separately and together. Using these graphs, it is used in the frequency start-up and adjustment of pumping units working on individual and common pipelines of irrigation and water supply pumping stations. In order to meet the demand for water supply, the effect of the additional resistances in individual and common pressure pipes on the electrical load was determined, and the optimal operating modes were determined during the adjustment of the pump units. When the pressure created by the pumping units working in the separate pressure pipe of the irrigation and water supply pumping stations is greater than the static pressure in the pipe, the push valve is opened and soft start is ensured.