410-4201/01 – Designing Electrical Machines (PRES)
| Gurantor department | Department of Electrical Power Engineering | Credits | 8 |
| Subject guarantor | doc. Ing. Petr Kačor, Ph.D. | Subject version guarantor | doc. Ing. Petr Kačor, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Choice-compulsory |
| Year | 2 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2010/2011 | Year of cancellation | 2023/2024 |
| Intended for the faculties | FEI | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
Successful students can calculation of electrical machines. Components of these calculations are also ventilating and mechanic calculations. Students can also bases of design.
Student can up successful finalization these subject principles calculation and groundings of construction electrical machines.
Teaching methods
Lectures
Tutorials
Project work
Other activities
Summary
The student can, after graduation of this subject, design electrical, magnetic circuits and mechanical systems of rotating electromagnetic machines. He can use the literature about construction electrical machines, standards ČSN EN, ČSN IEC and catalogues manufacturing programmes.
Compulsory literature:
Peter Vas. Electrical Machines and Drives, Klarendon Press, Oxford, 1992
Recommended literature:
Peter Vas. Electrical Machines and Drives, Klarendon Press, Oxford, 1992
Way of continuous check of knowledge in the course of semester
Conditions for credit:
Participation on exercises
Protocols of measurments and calculations
Credit test
E-learning
Other requirements
There are not additional requirements for the student.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
Introduction into construction and projection electrical machines
Projects of technical product, historical development electrical machines, producer electrical machines, components electrical machines
Influence applied on systems design and construction electrical machines, operating principles electrical machines, sort of current, speed of rotation, excitation, cooling duty type, working environment, form of machines
Rating machines, inertial mass, voltage, noise and vibration, thermostability of materials, mechanical ruggedness and influence of environment specification, standard specifications and regulations for electrical machines
Basic phase of machine design, selection basic dimensions, influence frequency, voltage, temperature, filling slots
Introduction into construction and projection electrical machine
Projects of technical product, historical development electrical machines, producer electrical machines, components electrical machines.
Heating and cooling of electrical machines, heating of homogenous body, proceedings of heat transfer, equivalent heat circuits.
Ventilating systems of electrical machines, calculation needed coolant levels
Calculation thermal resistances.
Design procedure of single sort machines
Mechanic calculations in electrical machines, calculation of simple parts, calculation bolts, gussets, shrunk rings, bandages and shafts
Calculation electrical machine supports, shaft voltage and bearing currents.
Electrical and mechanic commutator calculation
Electrical machine reliability, conception and definition, bath curve, determination machines reliability, degradation's factor, dependability
Diagnostics of electrical machines, method and procedures
Commutation calculation and commutating poles, latitude of commutation range, verification commutating quality, operation direct-current machine power supply wavy current
Influence of no sinusoidal power supply on activity AC machines
Projects:
It is submit separate work. Student works up this separate work in time out of tutorial. Work contains calculations, drawing documentation and written paper.
Computer labs:
Introduction into projection electrical machines, conditions of credits, DC windings
Design AC three-phase winding of electrical machines
Design coil of AC windings, circular cross-section wires
Design coil of AC windings, sectional wires
Calculation no-load characteristic
Calculation no-load characteristic and excitation windings design
Excitation windings calculation and design
Design coils of excitation windings - alternating-current alternator with salient poles
Calculation losses of electrical machines
Ventilation and cooling
Schaft design, determination shaft deflection, critical speed
Bearing design
Support
Dovetail commutator, segment lamele loading calculation
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction