410-4121/01 – Electrical Machines III (ELS3)
| 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 | 1 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2014/2015 | Year of cancellation | |
| Intended for the faculties | FEI | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
The course objetives is to obtain knowledge necessary for intermediate level workers employed in operation, maintenance of electrical machines and in design of simple electrical drives.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Other activities
Summary
Ambient parameters and stress during operation of electrical machines, operating modes, failure states and their analysis, speed control of motors. Diagnostic and reliability of electrical machines.
Compulsory literature:
Hindmarsh, J.: Electrical machines and their applications Pergamon Press,Oxford,1970
Recommended literature:
Hindmarsh, J.: Electrical machines and their applications Pergamon Press,Oxford,1970
Pyrhönen,J., Jokinen,T. Hrabovcová,V.: Design of rotating electrical machines, John Wiley & sons, Ltd. 2008
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
There are no other requirements on the student.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
Parameters and definition of various operation ambient.
Degradation processes in electric machines and influence upon functional properties.
Operation and failure states of transformers.(Short circuit and connection to network).
Properties of asynchronous motor fed by no sinusoidal voltage.
Properties of asynchronous motor fed from frequency converter.
Starting up and braking of asynchronous motors. Kinds, methods and properties.
Starting-up of synchronous motors.
Synchronous machines short circuit.
DC machines operation. Slide contact function.
Properties of DC machines by feeding of wavy current.
Technical diagnostic. Sorts and manners of diagnostic.
Reliability and diagnostic of transformers, measurement and oil diagnostic.
Reliability of rotating electric machines.
Diagnostic of electric machines. Measurable quantities for electric machines single parts.
Exercises:
Ambient analysis and its action.
Voltage drop calculation by transformers operation.
Voltage drop calculation by starting-up of motors.
Motor power output calculation by various sorts of load.
Motor design for crane drives.
Laboratories:
Introducing to laboratory. Safety working. Conditions of study.
Measuring of Transformer switching, three-phase transformer asymmetry.
Circle diagram of asynchronous motor.
Measurement of asynchronous motor.
Measurement of characteristics of synchronous machines, time constants.
Short circuit measurement of synchronous generators.
Diagnostic of electrical machines.
Credit.
Projects:
Project consists of elaboration of protocols from laboratory exercises, with values, diagrams and evaluation of results and terminal work by students of combined study.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction