Korotaiev P. The power effective pump unit electric drive with the improved starting characteristics

Subject of the research : static and dynamic processes in electromechanohydraulic system of the pump unit electric drive taking into account distribution of the water highway parameters. Objective of the research: establishment of pump units electric drives influence starting characteristics on water supply systems rushes and definition the frequency operated electric drive rushes means elimination ways. Methods of the research: analysis and synthesis; theory of automatic control; theory of the electric drive; computer modeling; mathematical analysis and solution of the differential equations. Theoretical and practical results:recommendations about pressure throws calculation in pipeline highways and a reduction possibility are formulated by their the pump unit launch process realization way; introduction of the power resource-saving the pump unit electric drive at the pump station of the second rise Solonitsevka settlement (The Kharkiv Region) has provided economy of the electric power - 40,5%, waters - 25%, decrease in number of the water highway rushes with 60 in a year till 8-10. Scientific novelty: the mathematical model of the frequency controlled pumping aggregate asynchronous electric drive working for a pipeline network taking into account is for the first time constructed in case elevated pressure waves relocation start-up on a water supply system; pressure throws dependences on a water supply system parameters and control of the electric drive at start-up are defined;it is shown that the frequency regulated electric drive launch under the linear law of pressure change at the pumping aggregate exit promotes excessive elimination increase in pressure in water supply systems. Implementation level:branch KRME "Territory Infrastructure Development Directorate" "Solonitsevsky SMS", educational process in Automated Electromechanical Systems Department in National Technical University "Kharkiv Polytechnic Institute". Scope of applicability: housing and communal services.