Electrical Machines and Applications
A tantárgyleírás hatályossága
| Subject name (Hungarian, English) |
Villamos gépek és alkalmazások
Electrical Machines and Applications
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| Subject code | BMEVIVEAC01 | ||||||||||||
| Subject type | — | ||||||||||||
| Training Level | — | ||||||||||||
| Course types and hours (weekly/semester) |
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| Assessment type | vizsga | ||||||||||||
| Credits | 4 | ||||||||||||
| Subject coordinator |
Név:
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| Responsible department |
Villamos Energetika Tanszék
|
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| Faculty | Villamosmérnöki és Informatikai Kar | ||||||||||||
| Subject website | — | ||||||||||||
| Primary curriculum type | — | ||||||||||||
| Direct prerequisites – Strong prerequisite | none | ||||||||||||
| Direct prerequisites – Weak prerequisite | none | ||||||||||||
| Direct prerequisites – Parallel prerequisite | none | ||||||||||||
| Direct prerequisites – Milestone prerequisite | none | ||||||||||||
| Direct prerequisites – Exclusion | none |
Objectives
Transformers
Single-phase and 3-phase transformers. Steady-state and transient
operation. Unbalanced load of the 3-phase transformers. Special transformers.
Windings of the rotation machines, torque development
Concentrated and distributed winding (slots). The induced voltage, the
developed air-gap filed, the stray field. Force and torque development and
calculation.
Induction machines
Equivalent circuit and torque development. Deep-slot and double-slot
rotors. Effect of the spatial harmonics. Starting and speed modification
methods. Asymmetric operation, stator and rotor asymmetry. Single-phase and
auxiliary-phase machines.
Synchronous machines
Cylindrical rotor case: Equivalent circuit and torque development. Motor
and generator operation. Stability. Effect of the salient-pole. Reluctance
machines. Permanent-magnet machines. Synchronous and induction linear machines.
DC machines
Armature windings. The role of the auxiliary and compensating windings.
Separate, parallel and mixed excitation, characteristics. Starting and speed
modification.
Modern calculation methods
Finite element method (FEM). Poisson equation. Lagrange interpolation
polynom. Dirichlet and Neumann conditions. Simple 2D promlem. Presentation of
the QuickField, Flux2D and Motorpro, MotorCad software.
Applications of electrical machines
Household electrical machines. Electrical
machines in consumer electronics. Electrical machines in vehicles. Magnetically
levitated trains. Superconducting generators and motors. Servo motors.
Kinetics of electrical drives
Reduction of torques and masses to common
shaft. Motion equation of the electrical drives. Stability criterion of drives.
Definition of time constants.
Design of electrical drive
Protection levels. Operation condition of
electrical motors. Thermal conditions. Selection of electrical motors.
Applications of electrical drives
Speed modification and braking methods of
DC urban electrical vehicles. Voltage source inverter-fed induction machine
driven trolley-bus. Semiconductor-based DC drive driven trains. Inverter-fed
trains. Wind generators.
The practices:
·
Calculation of
electromagnetic forces
·
Single-phase
transformers
·
Parallel operation of
transformers
·
Connections of
transformers
·
3-phase transformers
·
AC windings
·
Calculation of the
induced voltage
·
Steady-state operation
of induction machines
·
Starting of induction machines
·
Steady-state operation
of synchronous machines
Learning outcomes
Ez a tantárgy a KKK rendeletben meghatározott, következő kompetenciák fejlesztését szolgálja:
Knowledge
No learning outcomes recorded.
Skills
No learning outcomes recorded.
Attitudes
No learning outcomes recorded.
Autonomy and responsibility
No learning outcomes recorded.
Oktatási módszertan
Tanulástámogató anyagok
Online források
Recommended preliminary knowledge for completing the subject
General rules
Assessment methods
In-term assessments
No detailed assessments provided.
Weight of in-term assessments
No weights provided.
Exam-period assessments
No detailed assessments provided.
Weight of exam elements
No weights provided.
Grade calculation
No grade thresholds provided.
Attendance requirements
No attendance requirements provided.
Rules for retake and resubmission
Not provided.
Short description
Not provided.
Detailed description
Not provided.
Recommended courses
Not provided.
Workload to complete the subject
No workload breakdown provided.
Validity of subject requirements
Curriculum placement
No curriculum placements recorded for this subject version.