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Item type:Publication, Access status: Metadata only , Properties of powders produced by electrical explosions of copper–nickel alloy wires(2007) Kwon, Y. S.; An, V. V.; Ilyin, A. P.; Tikhonov, D. V.; Тихонов (Tikhonov, D. V.), Дмитрий Владимирович; Кафедра «Электрооборудование и автоматизация технологических процессов» (ЭиАТП)The phase and element compositions of surface and near-surface layers of particles in powders produced in gaseous argon by electric explosion of Cu–Ni alloy wires were studied. It was established that powders produced from Cu–Ni alloys are phase heterogeneous. Their size distribution function is three-modal. Their dispersivity increases with the increase of the energy input into a conductor. The principal phase stabilizing in electroexplosion end-products from alloys Cu–Ni23 and Cu–Ni45 is intermetallic compound Cu0.81Ni0.19. Apparently, the metal phases of copper or nickel are located in the central areas of the particles. A mechanism of particle formation during electrical explosion of wires was proposed.Item type:Publication, Access status: Metadata only , Resonance phenomena analysis in induction generators(2016) Padalko, D. A.; Garganeev, A. G.; Tyuteva, P. V.; Тютева (Tiuteva, P. V.), Полина Васильевна; Кафедра «Электрооборудование и автоматизация технологических процессов» (ЭиАТП)The operation features of induction generator are revealed in the paper. Parametric resonance as a cause of induction generator excitation is investigated. The study was performed by the mathematical description and modeling in the block diagram environment Simulink pack of MatLab software applications. It was confirmed on the basis of studies that residual magnetization is not a mandatory factor for the transition of the induction machine in generator mode. The power generation conditions are estimated on the frequency characteristics of the induction generator equivalent circuit.Item type:Publication, Access status: Open Access , Энергоэффективные асинхронные двигатели для насосных агрегатов(2010) Тютева, П. В.; Тютева (Tiuteva, P. V.), Полина Васильевна; Муравлева, О. О.; Кафедра «Электрооборудование и автоматизация технологических процессов» (ЭиАТП)Item type:Publication, Access status: Open Access , Оценка экономической эффективности асинхронного регулируемого электропривода насосных агрегатов(2009) Тютева, П. В.; Муравлева, О. О.; Тютева (Tiuteva, P. V.), Полина Васильевна; Кафедра «Электрооборудование и автоматизация технологических процессов» (ЭиАТП)Предложена методика расчета экономической эффективности работы регулируемого привода, с учетом характеристик насоса, трубопровода и асинхронного двигателя. Произведено сравнение экономической эффективности при реализации различных законов управления. The design procedure of profitability of a controlled-velocity electric drive in terms of the pump, the pipeline and the induction motor characteristics has been proposed. Comparison of profitability when implementing various control laws has been made.Item type:Publication, Access status: Metadata only , Power Characteristics of Induction Motors at Core Length Changing(2005) Tyuteva, P. V.; Muravleva, O. O.; Тютева (Tiuteva, P. V.), Полина Васильевна; Кафедра «Электрооборудование и автоматизация технологических процессов» (ЭиАТП)Mathematical simulation of induction motors is carried out at changing core length for estimation of power parameters. Power characteristics of induction motors are obtained for several calculation variants. Abundance of low-cost power resources for many years has generated a negative trend of power wastefulness. The power component of the cost price of many kinds of industrial and agricultural products has decreased to 1-3 % that has not given impetus to saving power resources. Old technology which is grounded on the overcharge of power resources was included in the projects of new large factories. Besides power wastefulness of industrial processes is caused by the significant share of out-of-date equipment, ineffective technological equipment, a high component of power consumption which is connected with manufacturing expenses [1].