Belépés címtáras azonosítással
magyar nyelvű adatlap
angol nyelvű adatlap
Laboratory of Specialisation
A tantárgy neve magyarul / Name of the subject in Hungarian: Villamos gépek és hajtások laboratórium
Last updated: 2015. február 23.
Obtaining of base knowledge in the field of
electrotechnics and electrical energetics in accordance with general technical
program and in technical program for specialization.
A fenti forma a Neptun sajátja, ezen technikai okokból nem változtattunk.
A kötelező előtanulmányi rendek grafikus formában itt láthatók.
According to actual directives, included in
Specialization and Department Regulation. Credits of course of Electrical Machines
and Applications are advised to be obtained.
Elaborating of theoretical and practical knowledge,
co-ordination of physical and computational models, promotion of practical
Studying line interactions and arcing phenomenon
in switchgears in laboratory conditions, comparison of measured results with
the theoretical ones.
Practical study of several types of electrical
motors and drives, based on different principles of operation. Laboratory
practices supplement and support theoretical courses of the specialty.
In the field of electrical energy systems
Line reaction of electric equipment
calculation, and technical evaluation of
energy quality parameters by standard methods
of protection device adjustment. Modelling and testing of the network in cases
of short-circuits of different types.
In the field of switchgears and equipments
Ideal switch-off of DC and AC faults.
and measurement of voltage appearing between the contacts of a switch
of the electric arc and arc interruption
of the voltage-current and voltage-length characteristics and comparison to
calculation results obtained from arc models. Interruption of AC and DC arc.
Investigation of the operation of fuses and miniature circuit breakers.
the characteristics of a fuse model and a miniature circuit breaker.
In the field of the electrical machines:
Investigation of induction machines
of the no-load and short-circuit
parameters and diagrams of the induction motor. Real load motor measurements.
Investigation of the synchronous
of the no-load and short-circuit
parameters and diagrams of the synchronous machine. Line synchronization of the
rotating synchronous generator. Measurement of the V-curves and current
Investigation of DC motor
of output characteristic of a DC generator. Measurement of the mechanical
(speed- moment) characteristic of a DC motor with auxiliary excitation.
Measurement of efficiency of the whole motor-generator group.
Investigation of three-phase transformers
the one-phase equivalent circuit of three-phase transformers. Measurement of
the no-load and short-circuit parameters of three-phase transformers.
Identifying the connection group of the transformer. Investigation of the near-saturation
and transient behavior.
In the field of electric drives
Investigation of chopper-fed DC servo drive
of the controlled DC servo drive. Measurement of the load performance of the
drive. The influence of current
limitation on the drive behavior.
Investigation of four-quadrant DC drive
of line-commutated, phase-controlled converter
DC drive. Converters without circulating current. Process of commutation.
Investigation of the four-quadrant modes on the input AC and output DC sides
Investigation of frequency converter
fed induction motor drive
Park vector analysis by means of oscilloscope. Open-loop (U/f) control method. PWM
technics and their analysis. Comparison of the open-loop and closed-loop
Laboratory measurement are 3 hours long 12
times in the semester, with one opportunity for supplement measurement
accordance with th Laboratory Regulations it is obligatory:
Study the measurement guides
.Every laboratory practice result in an individual
mark. The minimal requirement of successful semester is the rather weak mean of
all the marks.
Maximum two opportunities are provided in
one semester for supplement failed measurements (typically the last week before
the end of semester)
Consultation time is available on-demand after
Laboratory measurement programs are based
on measurement guides in electronic form, supplied on the department’s
work for lab measurements