Кафедра "Електричні машини"

Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/3886

Офіційний сайт кафедри http://web.kpi.kharkov.ua/elmash

Кафедра “Електричні машини” була створена в 1921 році одночасно з першим в Україні електротехнічним факультетом у Харківському технологічному інституті. Засновником факультету і кафедри був видатний вчений електротехнік професор Павло Петрович Копняєв. Перший випуск студентів кафедри відбувся у 1924 році. У подальшому, за понад сторіччя, підготовлено понад 3000 інженерів для України та зарубіжжя.

Кафедра входить до складу Навчально-наукового інституту енергетики, електроніки та електромеханіки Національного технічного університету "Харківський політехнічний інститут".

У складі науково-педагогічного колективу кафедри працюють: 2 доктора технічних наук, 5 кандидатів технічних наук, 1 доктор філософії; 1 співробітник має звання професора, 5 – доцентів.

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Зараз показуємо 1 - 20 з 891

125 лет асинхронному двигателю с короткозамкнутым ротором: итоги и перспективы
(НТУ "ХПИ", 2014) Шилкова, Лариса Васильевна; Егоров, Борис Алексеевич
3D magnetic filed distribution in a screw double-stator induction motor
(Lviv Polytechnic National University, 2015) Zablodskiy, Nikolai; Pliugin, V.
In this paper Ansys Maxwell calculation result of 3D magnetic field in double-stator screw induction motor with hollow outer ferromagnetic rotor is given.
Analysis of electromagnetic vibration forces in the elements of the turbogenerator stator fastening to the case in non-nominal operation modes
(НТУ "ХПИ", 2018) Shevchenko, V. V.; Minko, A. N.; Strokous, A. V.
Purpose. The purpose of the paper is to determine the value of additional electromagnetic forces (EMF) that are created by the fluxes of scattering of the back of the turbogenerator (TG) stator core in the elements of its fastening to the case when operating in non-nominal modes according to the vibration control data. Methodology. The paper used the theory of electromagnetic fields, the method of polynomial approximation, mathematical modeling in the MathCAD-2000 professional package and the provisions of the general theory of electrical machines. Results. Analytical and numerical calculations of additional EMF values are performed, which were created by the leakage fluxes of the back of the stator core in the elements of fastening of the TG to the case when operating in non-nominal modes, which is determined by the need for night unloading of the power system. The values of these TG forces are established with a change in the output and consumption of reactive power and with a change in voltage. Originality. For the first time for TGs operating in non-nominal modes, the estimation and calculation of additional EMF in the elements of the TG core fastening to the case are carried out, which are created by the leakage fluxes of the back of the stator core and supplement the action of the basic EMF. The definition of these forces is relevant, because turbogenerators of TPPs in Ukraine with a capacity of 200-300 MW are maneuvering capacities and solve the problem of maintaining the power factor of the power system. Practical value. It was found that if the TGs often operate in non-nominal modes, the wear of the stator core fastening systems to the case is more significant than in the case of their operation only in nominal modes. The obtained data will allow to more accurately determine the scope of repair work, draw up schedules for their implementation, determine the locations of the sensors for monitoring, and can be used at the design stage of new machines.
Analysis of optimal operating modes of the induction traction drives for establishing a control algorithm over a semiconductor transducer
(Технологический центр, Украинская государственная академия железнодорожного транспорта, 2017) Liubarskyi, B.; Petrenko, O.; Shaida, V.; Maslii, A.
Оптимізовано режими роботи тягового асинхронного приводу тепловоза за критерієм ефективності. Ідентифіковано оптимальні режими керування автономного інвертору напруги при різних температурах обмоток тягових двигунів. Проаналізовано оптимальні режими роботи тягового приводу тепловоза та трамваю, що дозволило встановити відмінності розташування точки переходу з просторово-векторної до однократної ШІМ від температури двигуна.
Analysis of the Electromagnetic Field of Electric Machines Based on Object-oriented Design Principles
(The Electromagnetics Academy, 2015) Pliugin, V.; Shilkova, L.; Lettl, J.; Buhr, K.
The authors propose to work out common principles of synthesis of electromagnetic field models for the main types of electrical machines. The main objective is to create field models of electric machines by inheritance of their characters from the original Maxwell's equations. An inverse problem also is solving - the synthesis of electric machines electromagnetic field equations using object-oriented design.
Analysis of transformers and electrical machines constructions and calculation of their characteristics
(Національний технічний університет "Харківський політехнічний інститут", 2015) Шевченко, Валентина Володимирівна; Маслєнніков, Андрій Михайлович; Дьомочка, Лідія Владиславівна
Calculation of the transformers and electric machines characteristics
(National Technical University "Kharkiv Polytechnic Institute", 2021) Shevchenko, V. V.; Domochka, Lidiia Vladyslavivna
This edition is dedicated to the implementation of calculation task "Calculation of the transformers and electric machines characteristics" on the discipline "Electric machines". The purpose of this discipline is to consolidate theoretical knowledge and develop practical skills for calculating the characteristics of transformers, alternation current (AC) electric machines and direct current (DC) electric machines. The objects of study are transformers and electric machines, which are the basis of electric power in various industries. The subject of this discipline are the electric machines, which are used in practice to convert one form of energy into another: mechanical energy to electrical (the generators), electrical energy to mechanical (the engines), and power transformers, which are used to convert the meanings of alternating current and voltage. After training, the student must know the structure, basic elements of the transformers and electric machines, there operation principle and characteristics, peculiarities of motors starting, the ways of rotation frequency control and braking. The student should be able to evaluate new electrical equipment, take into account technical and economic requirements. This assignment consists of five tasks. For each part, control questions and tasks are formulated, recommendations for their solution are given. Calculation tasks are the student’s final document to complete the discipline. The report on the done work must be finished in written form and defended by the examination date. The tasks and the volume of the work must be agreed by the lecturer of this discipline. The report should begin with a cover page, the sample of which is given in Appendix A. When drawing up a report, it is necessary to formulate the task, show the procedure for performing calculations: write down a formula, and then put numbers in this formula and show the result of the calculation. The report should contain the necessary diagrams and graphs. At the end of the report student has to give the list of information sources used in the work. Graphs and diagrams should be built on graph paper, indicating the scale and dimension of the physical quantity on the axes. If the graph was built on a regular sheet of paper, then a uniform "grid" should be drawn on the graph field. Students choose the number of a variant for the work according to the number in the academic group list. New modern notation symbol system of electrical, magnetic, mechanical and energy values, which correspond to the state standards, are used in this study course.
Calculation of the transformers and electric machines characteristics
(National Technical University "Kharkiv Polytechnic Institute", 2024-10-24) Shevchenko, V. V.; Dunev, О. О.
These guidelines are intended to perform the calculation and graphic task "Calculation of the characteristics of transformers and electric machines" in the discipline "Electric machines".
Development and experimental research of transverse magnetic flux machine with a disk rotor
(2020) Masliennikov, A.; Duniev, O.; Yehorov, A.
Disciplines of higher education institutions that form valeological competence
(2022) Shevchenko, A. S.; Shevchenko, V. V.
Health saving issues are included in most state education standards of Ukraine. But for the full formation of valeological competence, special valeological disciplines are necessary ("Valeology", "Fundamentals of Life Safety", "Fundamentals of Medical Knowledge and Health Saving", "Health Pedagogy"). Related disciplines ("Ecology", "Occupational Safety") only partially form competence.
Effectiveness in use of molten pool heat
(International Association "Welding", 2001) Dmitrik, V. V.; Shevchenko, V. V.
Method for estimation of the amount of the arc heat introduced into parent metal and transferred with the liquid metal. Hows from the head to the tail portion of the weld pool is suggested. It is shown that the efficiency in use of the molten pool heat can be increased by using an extra filler metal and selecting the optimum parameters of welding.
Formation of valeological competence in conditions of classroom and distance learning
(Харківськии̮ національнии̮ університет ім. В. Н. Каразіна, 2022) Shevchenko, A. S.; Kucherenko, Serhii; Komyshan, Anatolii; Shevchenko, V. V.; Kucherenko, Nataliia
Formulation of the problem. The article considers the problem of valeological (health saving) competence formation in non-medical students. Health saving competencies are based on a healthy lifestyle, safe behavior practices and the ability to provide emergency pre-hospital care to victims in critical situations. The formation of valeological competence in non-medical takes place during the study of valeological disciplines (including “Fundamentals of Medical Knowledge”, “Health Pedagogy” and others) in higher education institutions (HEI). Since the spring of 2019, the teaching of these disciplines is forced to take place in distance form.
High-Efficiency Impact Electromechanical Converter
(Всероссийский электротехнический институт им. В. И. Ленина, 2011) Bolyukh, V. F.; Luchuk, V. F.; Rassokha, M. A.; Shchukin, I. S.
An algorithm for choosing the parameters of the impact electromechanical converter based on the genetic algorithms and the flexible polyhedron method joint use is developed. The spatial temporal distribu tion of integral and local electrodynamics forces that act on the accelerated anchor is found.
Imitation model of a high-speed induction motor with frequency control
(NTU "KhPI", 2017) Pliugin, V.; Petrenko, O.; Grinina, V.; Grinin, O.; Yehorov, A.
Purpose. To develop the imitation model of the frequency converter controlled high-speed induction motor with a squirrel-cage rotor in order to determine reasons causes electric motor vibrations and noises in starting modes. Methodology. We have applied the mathematical simulation of electromagnetic field in transient mode and imported obtained field model as an independent object in frequency converter circuit. We have correlated the simulated result with the experimental data obtained by means of the PID regulator factors. Results. We have made the simulation model of the high-speed induction motor with a squirrel-cage rotor speed control in AnsysRMxprt, Ansys Maxwell and Ansys Simplorer, approximated to their physical prototype. We have made models modifications allows to provide high-performance computing (HPC) in dedicated server and computer cluster to reduce the simulation time. We have obtained motor characteristics in starting and rated modes. This allows to make recommendations on determination of high-speed electric motor optimal deign, having minimum indexes of vibrations and noises. Originality. For the first time, we have carried out the integrated research of induction motor using simultaneously simulation models both in Ansys Maxwell (2D field model) and in Ansys Simplorer (transient circuit model) with the control low realization for the motor soft start. For the first time the correlation between stator and rotor slots, allows to obtain minimal vibrations and noises, was defined. Practical value. We have tested manufactured high-speed motor based on the performed calculation. The experimental studies have confirmed the adequacy of the model, which allows designing such motors for new high-speed construction, and upgrade the existing ones.
Improvement of turbogenerators as a technical basis for ensuring the energy independence of Ukraine
(Національний технічний університет "Харківський політехнічний інститут", 2021) Shevchenko, V. V.; Minko, A. N.; Dimov, Milen
The paper defines the directions of improving turbogenerators as the basis for ensuring the energy independence of Ukraine. The analysis of the state, problems and prospects for the development of modern electric power industry. Goal of the work is to identify promising directions for sustainable development of the national electric power industry in order to ensure energy security of Ukraine, to conduct a comparative analysis of electricity sources, to confirm the need to improve the main sources – turbogenerators. Methodology. During the research, an analytical analysis of the electricity sources, which are installed at power plants in Ukraine and the world, was carried out, taking into account the growth of the planet's population and its energy activity. Cyclic theory was chosen as the theoretical basis for forecasting. On the basis of this theory, global development trends, advantages and disadvantages of currently used sources of electricity - thermal (including nuclear) power plants and stations that operate from renewable energy sources - have been established. A review of literary sources on the methods of the energy sector forecasting the development, including the development of the energy sector in Ukraine, has been carried out. Originality. It has been established that due to the active growth of the planet's population, with the increase in its energy activity, obtaining electricity from renewable energy sources is not enough, that for the next 20-30 years nuclear power plants will be the main sources of electricity. The internal and external threats to the energy security of Ukraine, directions of development of turbogenerator construction, ways to improve turbogenerators, to increase their energy efficiency, power per unit of performance, to increase the readiness and maneuverability factors, and overload capacity have been identified. Practical significance. The need to continue the modernization and improvement of the turbogenerators of nuclear power plant units, as the main sources of electricity, has been proved. The directions of their improvement are established: increasing the power in the established sizes, making changes to the design of the turbogenerators inactive elements, replacing the cooling agent to keep Ukrainian turbogenerators at the world level, improving auxiliary systems, improving and increasing the reliability of the excitation system, introduction of automatic systems for monitoring the state turbogenerators. Possible limits of use, advantages, disadvantages and problems of using renewable energy sources for Ukraine have been established.
Influence of manufacturing quality of laminated core on a turbogenerator exploitation term
(НТУ "ХПИ", 2016) Shevchenko, V. V.
The problem of calculating the flexural deformation of the laminated core of the stator turbogenerator is examined. The evaluation of the effect of gluing the core sheets on its bending stiffness based on the compliance of the insulating cover sheet of active steel. An impact of pressing effort on the relative movement of the package of sheets is determined. An effect of wear of the insulating layer between sheets of laminated core on its reliability is determined. Conclusions are drawn on how to determine the possibility of extending the life of turbogenerators on the basis of the data obtained.
Introduction to Specialty. Introductory Practice
(2023) Yuryeva, O. Yu.
The educational and professional program "Electromechanics" is an integral part of the specialty "Electric power engineering, electrical engineering and electromechanics". Specialists in electromechanics solve technical problems in the research, development, production, operation, testing and maintenance of various electromechanical devices, which include electric machines and transformers. The educational and professional program "Electromechanics" studies electrical machines and transformers, which are used in all areas of human life. The discipline "Introduction to Specialty" helps first-year students familiarize themselves with the field of activity of their future specialty. The discipline "Introduction to Specialty" for electrical machines studies the basic laws of electrical engineering, the letter designations of quantities, the main phenomena of the electromagnetic field, and introduces the variety of electric machines and transformers that ensure the operation of modern mechanisms. The curriculum of the discipline envisages familiarizing students with the structure of the university and its divisions, the history of the development of the university and the Electrical Machines Department, and the rules for using the library. The main task and goal of the discipline is the study of the history of knowledge and development of electricity, the basic laws of electric and magnetic phenomena, the history of the development of electric machines and transformers, This methodical edition contains the program of the course "Introduction to Specialty", control questions for the sections of the course, methodological instructions for performing control tasks, as well as a list of sources of information necessary for studying the discipline.
Investigation of linear impulse electromechanical converter
(NTU "KhPI", 2017) Bolyukh, V. F.; Kocherga, O. I.; Shchukin, I. S.
Methodical instructions for laboratory works on the discipline "Electric machines"
(2019) Shevchenko, V. V.; Duniev, O. O. ; Shilkova, L. V.; Lazareva, O. Ya.
This edition is dedicated to expand the theoretical knowledge of foreign students on the "Electric machines" discipline. The objects of study are transformers and electric machines, which are the basis of electric power in various industries. The subject of this course is electric machines, which are used in practice to convert one form of energy into another: mechanical to electrical (generator), electri-cal to mechanical (electric motors), and power transformers, which are used to con-vert the parameters of AC current and voltage.
Methodical instructions for laboratory works on the discipline "Electric machines"
(National Technical University "Kharkiv Polytechnic Institute", 2019) Shevchenko, V. V.; Duniev, O. O.; Shilkova, L. V.; Lazareva, O. Ya.
The edition is dedicated to expand the theoretical knowledge of foreign students on the "Electrical machines" discipline. The objects of study are transformers and electric machines, which are the basis of electric power in various industries. The subject of this course is electric machines, which are used in practice to convert one form of energy into another: mechanical to electrical (generators), electrical to mechanical (electric motors), power transformers, which convert the AC parameters, current and voltage.