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Main menu for Browse IS/STAG
Course info
KEV / VPS
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Course description
Department/Unit / Abbreviation
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KEV
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VPS
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Academic Year
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2023/2024
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Academic Year
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2023/2024
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Title
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Selected Topics in Electrical Machines
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Form of course completion
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Exam
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Form of course completion
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Exam
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Accredited / Credits
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Yes,
4
Cred.
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Type of completion
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Combined
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Type of completion
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Combined
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Time requirements
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Lecture
2
[Hours/Week]
Tutorial
2
[Hours/Week]
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Course credit prior to examination
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Yes
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Course credit prior to examination
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Yes
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Automatic acceptance of credit before examination
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Yes in the case of a previous evaluation 4 nebo nic.
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Included in study average
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YES
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Language of instruction
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Czech, English
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Occ/max
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|
|
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Automatic acceptance of credit before examination
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Yes in the case of a previous evaluation 4 nebo nic.
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Summer semester
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0 / -
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0 / -
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0 / -
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Included in study average
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YES
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Winter semester
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3 / -
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0 / -
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0 / -
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Repeated registration
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NO
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Repeated registration
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NO
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Timetable
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Yes
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Semester taught
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Winter semester
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Semester taught
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Winter semester
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Minimum (B + C) students
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10
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Optional course |
Yes
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Optional course
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Yes
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Language of instruction
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Czech, English
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Internship duration
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0
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No. of hours of on-premise lessons |
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Evaluation scale |
1|2|3|4 |
Periodicity |
každý rok
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Evaluation scale for credit before examination |
S|N |
Periodicita upřesnění |
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Fundamental theoretical course |
No
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Fundamental course |
Yes
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Fundamental theoretical course |
No
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Evaluation scale |
1|2|3|4 |
Evaluation scale for credit before examination |
S|N |
Substituted course
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None
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Preclusive courses
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N/A
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Prerequisite courses
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N/A
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Informally recommended courses
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N/A
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Courses depending on this Course
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KEV/SNTES
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Histogram of students' grades over the years:
Graphic PNG
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XLS
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Course objectives:
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To inform students about details in selected topics in electrical machines design. To provide students with theoretical knowledge and practical skills in the field of origin, analysis and reduction of noise and vibrations in electrical machines, further in the fields of structural parts dimensioning and shaft stresses in electrical machines.
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Requirements on student
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Credit: Active attendance at the laboratory practicum, written elaboration of given tasks.
Exam: Exam is carried out in combined form, student have to prove the knowledge from lectures and practical skills.
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Content
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1) Course introduction; terminology; entry assumptions/demands on student.
2) Noise and vibrations in electrical machines: quantities, basic relations and equations; natural modes and frequencies; noise and vibration sources, standards.
3) Magnetic forces in electrical machines I: Maxwell Stress Tensor and Lorentz force; magnetostriction; radial, tangential and axial forces; force wavenumber, rotating and pulsating forces.
4) Magnetic forces in electrical machines II: stator and rotor magnetomotive force harmonics; permeance harmonics; air gap flux density spectrum.
5) Magnetic forces in electrical machines III: magnetic force spectrum under standard operation of the machine - effect of winding, slotting, saturation and PWM; magnetic force spectrum of the machine under non-standard operational states.
6) Reduction of noise and vibrations in electric machines: electromagnetic design; drive control; structural design.
7) Calculation and modeling methods of noise and vibrations excited by magnetic forces.
8) Faults in electrical machines and fault detection methods.
9) Experimental analysis of noise and vibrations: noise and vibration measurements; types of analysis; operational deflection shapes.
10) Experimental modal analysis and operational modal analysis.
11) Dimensioning of electric machines structural parts: machine frame; pole fixing; permanent magnet bandage; shaft.
12) Shaft stresses in steady state and transient states: shaft stresses; deflection, torsional and bending oscillations; critical speed and shaft natural frequencies; effect of unbalanced magnetic pull.
13) Lecture conducted by the selected expert from industry.
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Activities
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Fields of study
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V Courseware jsou studentům předmětu dostupné studijní opory, přednáškové prezentace a podklady k cvičením.
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Guarantors and lecturers
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Literature
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Basic:
Gieras, Jacek Franciszek; Lai, Joseph Cho; Wang, Chong. Noise of polyphase electric motors. Boca Raton : CRC/Taylor & Francis, 2006. ISBN 978-1-4200-2773-0.
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Recommended:
Tavner, Peter. Condition monitoring of rotating electrical machines. 1st pub. London : Institution of Engineering and Technology, 2008. ISBN 978-0-86341-739-9.
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Recommended:
Juha Pyrhonen, Tapani Jokinen, Valeria Hrabovcova. Design of Rotating Electrical Machines, 2nd Edition. Wiley, 2013. ISBN 978-1-118-58157-5.
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Recommended:
Beran, Vlastimil. Chvění a hluk. 1. vyd. Plzeň : Západočeská univerzita, 2010. ISBN 978-80-7043-916-6.
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Recommended:
Wiedemann, E.; Kellenberger, W. Konstrukce elektrických strojů. 1. vyd. Praha : SNTL, 1973.
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Recommended:
Brandt, Anders. Noise and vibration analysis : signal analysis and experimental procedures. Chichester : John Wiley & Sons, 2011. ISBN 978-0-470-74644-8.
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Recommended:
Kopylov, Igor Petrovič; Voženílek, Petr. Stavba elektrických strojů. 1. vyd. Praha : Státní nakladatelství technické literatury, 1988.
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Recommended:
Bartoš, Václav. Teorie elektrických strojů. 1. vyd. Plzeň : Západočeská univerzita, 2006. ISBN 80-7043-509-7.
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On-line library catalogues
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Time requirements
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All forms of study
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Activities
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Time requirements for activity [h]
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Contact hours
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52
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Preparation for laboratory testing; outcome analysis (1-8)
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6
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Presentation preparation (report) (1-10)
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6
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Preparation for an examination (30-60)
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45
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Total
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109
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Prerequisites
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Knowledge - students are expected to possess the following knowledge before the course commences to finish it successfully: |
to describe operational principle and construction of different kinds of electrical machines |
to differentiate among different types of winding in electrical machines |
to desribe principle of electric drive control using frequency converter |
to explain basic relations among electromagnetic field quantities |
Skills - students are expected to possess the following skills before the course commences to finish it successfully: |
to apply fundamentals of electrical machine measurements |
to design induction and synchronous machine with both electrical excitation and permanent magnets |
to utilize selected software for scientific and technical computing |
to utilize selected software for finite element analysis of magnetic field |
Competences - students are expected to possess the following competences before the course commences to finish it successfully: |
N/A |
N/A |
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Learning outcomes
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Knowledge - knowledge resulting from the course: |
to explain the origin of magnetic forces in electrical machines, to describe the force spectrum, effect and impact of machine structural design on the forces |
to describe sources of noise and vibrations in electrical machines, methods for their measurement, analysis and reduction |
to describe possible faults in electrical machines and fault detection methods |
to explain the rules and relations for dimensioning of electrical machines structural parts |
to describe shaft stresses and vibrations in electrical machines and related problems |
Skills - skills resulting from the course: |
to analyze magnetic forces in electrical machines |
to apply vibrodiagnostic fundamentals on electrical machines |
to design correct dimensioning of selected electrical machine structural parts |
to calculate shaft stress in electric machine due to different types of loading |
Competences - competences resulting from the course: |
N/A |
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Assessment methods
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Knowledge - knowledge achieved by taking this course are verified by the following means: |
Combined exam |
Skills - skills achieved by taking this course are verified by the following means: |
Skills demonstration during practicum |
Individual presentation at a seminar |
Competences - competence achieved by taking this course are verified by the following means: |
Individual presentation at a seminar |
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Teaching methods
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Knowledge - the following training methods are used to achieve the required knowledge: |
Lecture |
Interactive lecture |
Multimedia supported teaching |
Skills - the following training methods are used to achieve the required skills: |
Laboratory work |
Practicum |
Skills demonstration |
Competences - the following training methods are used to achieve the required competences: |
Individual study |
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