Electrical Equipment and Electric Drive
Description: Classification, theoretical foundations, design and principle of operation of electric motors for various operating modes, their choice. Emergency operating modes of electrical equipment, device, operating principles and selection of control and protection equipment. Calculation and design of electric drive systems for various different mechanisms and equipment.
Amount of credits: 5
Пререквизиты:
- Electrical Engineering
Course Workload:
| Types of classes | hours |
|---|---|
| Lectures | 30 |
| Practical works | |
| 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: Component by selection
Cycle: Base disciplines
Goal
- training of a qualified specialist who knows the theoretical and practical basics in the field of electric drive.
Objective
- the study of the general physical laws of the electric drive, the features of the interaction of the elements of the electromechanical system, the nature of dynamic processes and the features of static modes of open and closed systems.
Learning outcome: knowledge and understanding
- know the general laws of physical processes in an automated drive
Learning outcome: applying knowledge and understanding
- Know modern methods of analysis and synthesis of electromechanical and power electronic devices;
Learning outcome: formation of judgments
- Know the types and modes of operation of electric drives
Learning outcome: communicative abilities
- Know the design, principle of operation; properties, scope of application of the main elements of the electric drive;
Learning outcome: learning skills or learning abilities
- Be able to perform standard calculations and determine the parameters and characteristics of individual elements of the electric drive
Teaching methods
In the conditions of credit technology of training, classes should be conducted mainly in active and creative forms. 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 problems independently, it should be highlighted: technology 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); game 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 |
| CPC. Calculation of mechanical characteristics | ||
| Laboratory work 2 | ||
| CPC. Calculation of electromechanical characteristics | ||
| Laboratory work 3 | ||
| Lecture notes | ||
| Testing | ||
| 2 rating | CPC. Construction of block diagrams | 0-100 |
| Laboratory work 4 | ||
| CPC. Engine power selection | ||
| Laboratory work 5 | ||
| CPC. Regulation of the coordinates of the electric drive | ||
| Testing | ||
| Lecture notes | ||
| 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
- History of electric drive development
- Mechanical characteristics of working machines and electric motors
- Fundamentals of electric drive dynamics
- Mechanical and electromechanical characteristics of a DC motor of parallel (independent) excitation
- Mechanical characteristics of a DC Motor of Independent Excitation in braking modes
- Mechanical and electromechanical characteristics of a DC motor of sequential excitation (DCM SE)
- Coordinate regulation and methods of braking a DC motor of sequential excitation
- Mechanical characteristics of asynchronous motors
- Mechanical characteristics of an asynchronous motor in braking modes
- Regulation of the angular velocity of the electric drive with asynchronous motors
- Calculation of the power of electric drives for various operating modes
- Electric drive of lifting and transport machines and units with a crank mechanism
- Electric drive of installations for centrifugal pumps, fans
- Electrical equipment of repair production, lifting and transport mechanisms, metalworking and woodworking machines
Key reading
- 1. Belov M.P., Novikov V.A., Rassudov L.N. - Automated electric drive of typical production mechanisms and technological complexes - M .: Publishing Center "Academy", 2014. - 576 p. 2. Ilyinsky N.F., Moskalenko V.V. – Electric drive: energy and resource saving: Textbook for students of higher educational institutions. - M.: Publishing center "Academy", 2014. - 208 p. 3. Ilyinsky N.F. Fundamentals of the electric drive: Proc. allowance for universities. - M.: MEI Publishing House, 2013. - 224 p. 4. Moskalenko V.V. Electric drive - M .: Mastery; Higher School, 2011. -368 p. 5. Onishchenko G.B. Electric drive. - M.: RAAS, 2013. - 320 p. 6. Chilikin M.G., Sandler A.S. The general course of the electric drive. - M.: Energoizdat, 2011. - 576 p.
Further reading
- 1. Katsman M.M. Guide to laboratory work on electrical machines and electric drives.- M: Higher school. 2011. 2. Belov M.P., Novikov V.A., Rassudov L.N. - Automated electric drive of typical production mechanisms and technological complexes - M .: Publishing Center "Academy", 2014. - 576 p. 3 Kapuntsov Yu.D. Electric drive for industrial and household installations. Tutorial. MPEI Publishing House, 2011. - 223s
