Electrical Machinery
Description: Electric machines are one of the main disciplines on the basis of which electricity supply and energy conservation are based, therefore knowledge in this field will allow students to use electric machines consciously and more effectively in their practical activities. The acquired knowledge should expand and stimulate the creative abilities of students, encourage them to further study the subjects of the specialty.
Amount of credits: 5
Пререквизиты:
- Theoretical Foundations of Electrical Engineering II
Course Workload:
| Types of classes | hours |
|---|---|
| Lectures | 15 |
| Practical works | 15 |
| Laboratory works | 15 |
| SAWTG (Student Autonomous Work under Teacher Guidance) | 30 |
| SAW (Student autonomous work) | 75 |
| Form of final control | Exam |
| Final assessment method | a written exam |
Component: University component
Cycle: Profiling disciplines
Goal
- providing comprehensive training of specialists, including vocational training, the development of creative abilities, the ability to form and solve problems of the specialty at a high scientific level, creatively apply and independently improve their knowledge. These goals are achieved on the basis of the fundamentalization of education, the increase of creative activity and independent work of students, the widespread use of computer technology.
Objective
- study of physical, electrical and electromechanical properties of electrical machines, transformers, study of designs of DC machines, asynchronous machines, synchronous machines, study of operating modes at rated load, regulation of electrical and electromechanical quantities, in an emergency state.
Learning outcome: knowledge and understanding
- Know and understand the basic laws, concepts and principles, as well as the design of electrical machines and transformers
Learning outcome: applying knowledge and understanding
- Possess the skills of handling modern technology, be able to use methods of solving problems of electric machines and transformers in the field of professional activity
Learning outcome: formation of judgments
- Observe electrical safety in production, participate in the development and implementation of energy and resource conservation measures in production using electric machines and transformers
Learning outcome: communicative abilities
- Have the ability to organize workplaces, their technical equipment, placement of technological equipment in accordance with production technology, safety standards and industrial sanitation, fire safety and labor protection
Learning outcome: learning skills or learning abilities
- Possess the skills to acquire new knowledge necessary for everyday professional activity, taking into account the development of electric machines and transformers, and continue education in the master's degree
Teaching methods
The methods (technologies) of teaching used in the course of teaching the discipline are indicated. Among the effective pedagogical techniques and technologies that contribute to the involvement of students in the search and management of knowledge, the acquisition of experience in solving various tasks independently, it should be highlighted: - technologies of problem- and project-oriented learning; - technologies of educational and research activities; - communication technologies (discussion, press conference, brainstorming, educational debates and other active forms and methods); -case study method (situation analysis); - gaming technologies in which students participate in business, role-playing, simulation games; - information and communication (including distance education) technologies.
Assessment of the student's knowledge
Teacher oversees various tasks related to ongoing assessment and determines students' current performance twice during each academic period. Ratings 1 and 2 are formulated based on the outcomes of this ongoing assessment. The student's learning achievements are assessed using a 100-point scale, and the final grades P1 and P2 are calculated as the average of their ongoing performance evaluations. The teacher evaluates the student's work throughout the academic period in alignment with the assignment submission schedule for the discipline. The assessment system may incorporate a mix of written and oral, group and individual formats.
| Period | Type of task | Total |
|---|---|---|
| 1 rating | Laboratory work 1 | 0-100 |
| Independent work of students. Calculation of transformers | ||
| Oral interview. Transformers | ||
| Laboratory work 2 | ||
| IWS. Calculation of asynchronous motors | ||
| Oral interview. АM | ||
| Report-abstract | ||
| Lecture notes | ||
| Testing | ||
| 2 rating | Laboratory work 3 | 0-100 |
| IWS. Calculation of synchronous machines | ||
| Laboratory work 4 | ||
| Oral interview. Synchronous machines | ||
| Laboratory work 5 | ||
| IWS. Calculation of DC machines | ||
| Laboratory work 6 | ||
| Oral interview. DC Machines | ||
| Report-abstract | ||
| Lecture notes | ||
| Testing | ||
| Total control | Exam | 0-100 |
The evaluating policy of learning outcomes by work type
| Type of task | 90-100 | 70-89 | 50-69 | 0-49 |
|---|---|---|---|---|
| Excellent | Good | Satisfactory | Unsatisfactory |
Evaluation form
The student's final grade in the course is calculated on a 100 point grading scale, it includes:
- 40% of the examination result;
- 60% of current control result.
The final grade is calculated by the formula:
| FG = 0,6 | MT1+MT2 | +0,4E |
| 2 |
Where Midterm 1, Midterm 2are digital equivalents of the grades of Midterm 1 and 2;
E is a digital equivalent of the exam grade.
Final alphabetical grade and its equivalent in points:
The letter grading system for students' academic achievements, corresponding to the numerical equivalent on a four-point scale:
| Alphabetical grade | Numerical value | Points (%) | Traditional grade |
|---|---|---|---|
| A | 4.0 | 95-100 | Excellent |
| A- | 3.67 | 90-94 | |
| B+ | 3.33 | 85-89 | Good |
| B | 3.0 | 80-84 | |
| B- | 2.67 | 75-79 | |
| C+ | 2.33 | 70-74 | |
| C | 2.0 | 65-69 | Satisfactory |
| C- | 1.67 | 60-64 | |
| D+ | 1.33 | 55-59 | |
| D | 1.0 | 50-54 | |
| FX | 0.5 | 25-49 | Unsatisfactory |
| F | 0 | 0-24 |
Topics of lectures
- Introduction, the subject of the course "Electric machines"
- Transformer operation under load
- Features of physical processes in three-phase transformers
- Parallel operation of transformers
- The role of alternating current machines in generating and consuming electrical energy
- General information about asynchronous motors
- The torque of an asynchronous motor and its dependence on sliding and voltage parameters
- Deep-groove engines
- Single-phase asynchronous motor, device, circuits, electromagnetic torque, starting methods
- Synchronous machines
- Angular and U–shaped characteristics
- Synchronous compensator
- General information about DC machines
- Electromotive force and electromagnetic torque of a DC machine
- Switching in DC machines is rectilinear, curvilinear switching
Key reading
- 1. Voldek A.I., Popov V.V., Electric machines.- St. Petersburg.: 2017. 2. Bruskin D.E., Zorokhovich A.E., Khvostov V.S. - Electric machines. M.:2012. Ch I., II. 3. Katsman M.M. Electric machines.-M.:2014. 4. Kopylov I.P. Electric machines.-L.:2011 5. Design of electric machines. / Edited by I.P.Kopylov M.:2012. 6. Zimin V.I., Kaplai M.Ya., Paley A.M. Windings of electric machines.-M.:2011.
Further reading
- 1. Rules for the installation of electrical installations of the Republic of Kazakhstan, A.: Rauan, 2012 2. Electrical part of stations and substations Reference materials for course and diploma design ed.: Neklepaeva B.N., Kryuchkova I.P. M.: Energoizdat, 2005. 3. Rozhkova L.D., Kozulin V.S. Electrical equipment of stations and substations. M.: Energoizdat, 2008. 4. Konovalov L.L., Rozhkova L.D. Power supply of industrial enterprises. - M.: Energiya, 2007. 5. Handbook of power supply design. Under the general editorship: Tishchenko N.Yu., Movsesova N.S., Barybina. – M.: Energoatomizdat, 2011.
