Belépés címtáras azonosítással
magyar nyelvű adatlap
angol nyelvű adatlap
A tantárgy neve magyarul / Name of the subject in Hungarian: Elektromechanika
Last updated: 2016. június 7.
Dr. János Hamar, PhD
Department of Automation and Applied Informatics, Faculty of Electrical
Engineering and Informatics
Honorary Associate Professor
Mathematics: Linear Algebra, Differential Equations
Basics of Electrical Engineering
A fenti forma a Neptun sajátja, ezen technikai okokból nem változtattunk.
A kötelező előtanulmányi rendek grafikus formában itt láthatók.
1-2 week: Transformer. Construction.
Operation. Equivalent circuit. Phasor diagram. Operation modes: no-load; short
circuit, parallel operation. Applications.
2-3 week: Electromechanical Converters. Overview. Basic operation
principle. Relation between power and size.
4-5 week: Rotating magnetic field
(RMF). Mechanically rotated MF. Electrically rotated MF. Induction machine. Construction.
Operation. Slip. Torque-speed characteristic. Motoring, generating, operation.
Equivalent circuit. Power, torque relations. Efficiency. Kloss-formula.
6 week: Synchronous machine.
Construction. Operation. Equivalent circuit. Phasor diagram. Torque-load angle
relation. Motoring, generating operation. Operation in Power Plant.
7-8 week: Direct Current machine.
Operation principle. Mechanical rectification-commutator. Construction. Induced voltage. Torque production. Motoring-generating
operation. Excitation modes. Efficiency. Special machines: Servo-motors,
step-motors, linear motors, brushless DC motors, tachogenerators, selsyns.
9-10 week: Transient phenomena.
Dynamic process in one and two energy-storage circuits with DC and AC inputs.
Initial conditions. Behavior of autonom circuit and response for forced inputs.
Roots in complex-plane. Pspice-program. Applications.
11-12 week: Power electronics.
Components. Electric switches. Rectification. AC-AC converters. DC-DC
converters. Inverters: voltage and current inverters. Uni-and bidirectional
power flow. One-two-four quadrant operation. Applications.
13 week: AC and DC electric drives.
Speed change by: rotor resistance, pole number, supply frequency. Starting
methods change of rotating direction. Braking methods.
14 week: Electric network. Power
plant, grid, substation, consumers. Active, reactive power change. Electric
are. Switches. Electric safety measures.
The materials of practice
and laboratory measurements are fitted to those of lectures.
a.) Lecturing interval:
Requirements to complete the semester and to earn credit, mark:
1. Completing the homework assignments and submitting them by dead-line
2. Completing the 6 laboratory measurements. Only two of them can be postponed to the retake week.
The laboratory measurements begin with written tests. If the test is unsuccessful, the laboratory measurement cannot be continued.
b.) Examination interval:
In the first part of the written examination 6 questions of lecture note: "Basic Questions - Electromechanics" have to
be answered. Each correct answer is worth 2 points. The questions and answers are available on our homepage: http://get.bme.hu. In the second part of the examination theoretical and practical questions shall be answered and tasks shall be solved. The written examination lasts
The final marks are offered as follows:
0-39 failed (1)
40-54 satisfactory (2)
55-69 average (3)
71-84 good (4)
85-100 excellent (5)
Students earning 40 points or more have the possibility to improve their
H. Academy of Sciences