410-2207/02 – Electrical Machines I (ELS1)
Gurantor department | Department of Electrical Power Engineering | Credits | 6 |
Subject guarantor | Ing. Petr Bernat, Ph.D. | Subject version guarantor | Ing. Petr Bernat, Ph.D. |
Study level | undergraduate or graduate | Requirement | Choice-compulsory |
Year | 2 | Semester | summer |
| | Study language | English |
Year of introduction | 2015/2016 | Year of cancellation | 2021/2022 |
Intended for the faculties | FEI | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
The course objectives is to master theory of transformers and asynchronous machines, their properties and utilization. Then to master basic measurements of operation characteristics of machines.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Other activities
Summary
In the course students become familiar with dividing ot electric machines, with electrical materials and basic laws for electric machines. Basic principles of transformers and asynchronous machines and their operation characteristics are discussed. Students become familiar also with basic rules of winding. During laboratory excercises the operation states of electric machines are measured.
Compulsory literature:
Hindmarsh,J.: Electrical Machines and their Applications, Oxford,1970
Recommended literature:
Hindmarsh,J.: Electrical Machines and their Applications, Oxford,1970
Way of continuous check of knowledge in the course of semester
Conditions for credit:
Full Participation on laboratory excercises (participation in laboratory exercises is contingent graduation skill about safeness work in laboratory, that is of conducted by at first semesters week (min 80% participation overall).
All protocols of laboratory works.
Successful credit examination paper.
Oral examination.
E-learning
LMS
Other requirements
No more requirements.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
1) Types of electric machines. Materials used by electric machines design.
2) Windings in electric machines
3) Enclosure, shape and cooling. Laws, equations and methods used in electric machines.
4) Principle and description of transformers. Operation states. Equivalent circuit. Phasor diagrams.
5) Three-phase transformers. Winding connection. Operation in parallel. Special types of transformers.
6) Magnetic field of electric machines. Types and function of winding.
7) Use of asynchronous machines. Design types and foundation dates. Function and operation state.
8) Energy bilance of asynchronous machines. Equivalent circuit. Torque.
9) Circle diagram of asynchronous machine.
10) Starting and speed control of asynchronous motors.
11) Asynchronous generator and brake.
12) Single phase induction motors.
13) Influence of harmonics on a asynchronous machines running.
Exercises:
Calculation excercise 1 of transformers.
Calculation excercise 2 of transformers.
Calculation excercise 1 of asynchronous machines.
Calculation excercise 2 of asynchronous machines - circle diagram design
Calculation excercise 3 of asynchronous machines.
Laboratories:
Familirization with laboratory practice, safety training, mark condition
Transformer measurement(no-load, short-circuit).
Measurement by three-phase transformer winding connection.
No-load test and locked-rotor test of asynchronous motor and load test of asynchronous motor.
Test
Credit.
Projects:
Project consists of elaboration of protocols from laboratory exercises, with values, diagrams and evaluation of results.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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