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 rend az adott szak honlapján és képzési programjában található.
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 skills.
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
Measurement, calculation, and technical evaluation of energy quality parameters by standard methods
Overcurrent protection
Calculation 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.
Calculation and measurement of voltage appearing between the contacts of a switch
Investigation of the electric arc and arc interruption
Measurement 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.
Measuring the characteristics of a fuse model and a miniature circuit breaker.
In the field of the electrical machines:
Investigation of induction machines
Measurments of the no-load and short-circuit parameters and diagrams of the induction motor. Real load motor measurements.
Investigation of the synchronous machines
Measurements 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 diagram
Investigation of DC motor
Measurement 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
Specifying of 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
Investigation 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
Measurement 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
Three-phase 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 control strategies.
Laboratory measurement are 3 hours long 12 times in the semester, with one opportunity for supplement measurement
In 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 preliminary agreement
Laboratory measurement programs are based on measurement guides in electronic form, supplied on the department’s homepage.
Contact hours
42
Preparation work for lab measurements
40
Measurement documentation work
38
Total
120