Electrical Machines

Major: Electrical Energetics, Electrical Engineering and Electromechanics
Code of subject: 6.141.00.O.023
Credits: 6.00
Department: Electromechatronics and Computerized Electromechanical Systems
Lecturer: Associate Professor, DSc Makarchuk Oleksandr Volodymyrovych, Associate Professor, DSc Kopchak Bohdan Lyubomyrovych
Semester: 2 семестр
Mode of study: денна
Мета вивчення дисципліни: The purpose of the discipline is to provide students with theoretical and practical knowledge of electromechanical energy conversion processes. The subject of study of this course is electric machines and transformers, which are the main links of modern electromechanical and electric power installations and systems.
Завдання: The study of an educational discipline involves the formation of competencies in students of education: general competences: ZK1. Ability to abstract thinking, analysis and synthesis. ZK2. Ability to apply knowledge in practical situations. ZK5. Ability to search, process and analyze information from various sources. ZK6. Ability to identify, pose and solve problems. ZK7. Ability to work in a team. ZK8. Ability to work autonomously. professional competences: FK1. The ability to solve practical problems using automated design and calculation systems (CAD). FC2. The ability to solve practical problems involving the methods of mathematics, physics and electrical engineering. FC5. The ability to solve complex specialized tasks and practical problems related to the operation of electric machines, devices and automated electric drives. FC7. The ability to develop projects of electric power, electrotechnical and electromechanical equipment in compliance with the requirements of legislation, standards and specifications. FC8. The ability to perform professional duties in compliance with the requirements of the rules of safety, labor protection, industrial sanitation and environmental protection. FC9. Awareness of the need to increase the efficiency of electric power, electrotechnical and electromechanical equipment. FC10. Awareness of the need to constantly expand one's own knowledge of new technologies in electric power, electrical engineering and electromechanics. professional competences of a professional direction: FCS1. Ability to identify, classify, and describe the operation of electromechatronic devices and transducers by using analytical and modeling techniques. FCS2. Ability to design electromechatronic devices and converters taking into account all aspects of the task, including creation, debugging, operation, maintenance and disposal. FCS3. The ability to argue the choice of methods for solving specialized problems, critically evaluate the obtained results and defend the decisions made. FCS4. The ability to investigate the problem and determine the limitations caused by the problems of sustainable development, the impact on the environment and the safety of life.
Learning outcomes: • knowledge of the structure and principles of various types of electrical machines and transformers; • the ability to demonstrate in-depth knowledge of physical phenomena in electrical machines and transformers in various modes and describe them mathematically; • the ability to apply gained knowledge of electrical machines and transformers in practice; • basic knowledge of electrical machines and transformers design as well as their structural elements.
Required prior and related subjects: • Further Mathematics, • Physics, • Engineering Mechanics, • Electrotechnical Materials, • Metrology and Electrical Measurements, • Theoretical Fundamentals of Electrical Engineering.
Summary of the subject: Major types of electrical machines, their role and importance in modern technology and power engineering. Transformers. Three-phase transformers. Electrical circuits and combinations of three-phase two winding transformers. DC machines. Generators and DC motors. General questions of AC machine theory. Induction machines. Synchronous machines.
Опис: Section 1. General provisions The main types of electric machines. Purpose, subject and task of studying the discipline "Electric machines". Chapter 2. Transformers Definition and main types of transformers. The main structural elements of the transformer. The principle of operation of the transformer. Modern designs of three-phase transformers to ensure electromagnetic compatibility. Equation of a transformer with a ferromagnetic core. Alternate scheme of the transformer. Identification of transformer parameters. Idle operation and short circuit of the transformer. Transformer voltage change. Losses and efficiency of the transformer. Chapter 3. General questions of the theory of alternating current machines Classification and general characteristics of alternating current machines. The main design elements and the principle of operation of alternating current machines. Electromotive force (EMF) of the armature winding of an alternating current machine. Magnetomotive force (MRF) of a single-phase armature winding. Chapter 4. Asynchronous machines The principle of operation of an asynchronous machine. Types of asynchronous machines. The main modes of operation of a three-phase asynchronous machine. The main design elements of a three-phase asynchronous motor. Phenomena in an asynchronous motor when the rotor is stationary and when the rotor rotates under load. Basic equations of an asynchronous motor. Reducing the rotor of an asynchronous machine to its stator. The equation of a reduced asynchronous motor. Operating characteristics of an asynchronous motor. Start-up of asynchronous motors. Chapter 5. Synchronous machines The principle of operation of a synchronous machine. Basic definitions and types of synchronous machines. A brief description of the main structural elements of turbogenerators and hydrogenerators. Synchronous generators with permanent magnets for wind energy. Armature reaction in a synchronous generator under active, inductive and capacitive loads. Reaction of the anchor under mixed loading. Armature reaction in a single-phase synchronous machine. Characteristics of synchronous generators. Short circuit ratio. Determination of stator winding parameters by characteristics. Regulation of the voltage of synchronous generators by changing the excitation or torque of the turbine. Parallel operation of synchronous generators and load distribution. giving synchronous machines. Asynchronous start of synchronous motors. Synchronous motors with permanent magnets. Chapter 6. DC machines The main design elements of direct current machines. The principle of operation of direct current machines. The magnetic field in the air gap of the machine when idling. Electromotive force (EMF) and electromagnetic moment. The magnetic field of the machine under load. Armature reaction in the generator. Direct current generators. DC motors. Machines with permanent magnets.
Assessment methods and criteria: Current control at practical classes, which is conducted in the form of a frontal written survey (colloquium), is intended to check the assimilation of the lecture material. The current control in laboratory classes, which is conducted in the form of a frontal oral survey before the beginning of classes, is intended to diagnose the assimilation of lecture material, students' readiness for laboratory classes, and the acquisition of communication skills. Final control of knowledge is conducted in the form of an exam.
Критерії оцінювання результатів навчання: •written reports on laboratory works, oral questioning, computational and graphic work (30%) •final control (control measure - exam): written and oral form (70%)
Recommended books: 1. Вольдек А.И., Попов В.В. Электрические машины. Введение в электромеханику. Машины постоянного тока и трансформаторы. Учебник для вузов. — СПб: Питер, 2008. — 320 с.: ил. 2. Вольдек А.И., Попов В.В. Электрические машины. Машины переменного тока. Учебник для вузов. — СПб.: Питер, 2008. — 350 с.: ил. 3. Бєлікова Л.Я., Шевченко В.П. Електричні машини: Навчальний посібник. — Одеса: Наука і Техніка, 2011. — 480 с. 4. Загірняк М. В., Невзлін Б. І. Електричні машини: Підручник. — 2-ге вид., перероб. і доп. — К.:Знання, 2009. — 400 с. 5. Півняк Г. Г. Електричні машини: навч. посіб. / Г. Г. Півняк та ін.; Національний гірничий ун-т. — Д. : НГУ, 2003. — 328 с. 6. Брускин Д.Э., Зорохович А.И., Хвостов В.С. Электрические машины. – М.: Высшая школа, 1990. 7. Pyrhonen Juha. Design of rotating electrical machines / Juha Pyrhonen, Tapani Jokinen, Valeria Hrabovcova ; translated by Hanna Niemel?a. p. cm. ISBN 978-0-470-69516-6 (cloth) © 2008 John Wiley & Sons, Ltd. –512 р. 8. Читечан В.И. Электрические машины. Зборник задач. – М.: Высшая школа, 1982. 9. Усольцев А.А. Электрические машины: Учебное пособие. – СПб: НИУ ИТМО, 2013. – 416 с. 10.Яцун М.А. Електричні машини: Навчальний посібник. – Львів: Видавництво Львівської політехніки, 2011. – 464 с. 9. Інформаційні ресурси 1. http://techno-privod.com.ua 2. http://provent.com.ua