[ MEBWAPRPELM ] PR Electrical Machines Lab

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Workload Education level Study areas Responsible person Hours per week Coordinating university
3 ECTS B3 - Bachelor's programme 3. year Mechatronics Wolfgang Gruber 2 hpw Johannes Kepler University Linz
Detailed information
Pre-requisites (*)Positive Absolvierung von VO Elektrische Maschinen ODER UE Elektrische Maschinen
Original study plan Bachelor's programme Mechatronics 2015W
Objectives Basic knowledge of electric machines (DC machines, synchronous machines, asynchronous machines)
Subject Students are introduced to the characteristic properties of the different electrical machines.

Four-hour lab exercises address four different topics:

Brushed DC Machine:
This part focuses on the characteristic properties of the DC machine. Examples include operation under no load, machine losses, and the motoric and generatoric load curves. An important part is the effects of armature reaction.
\\ Induction Machine:
In this lesson, an induction machine with contact rings on the rotor is used to create the standardised measurements. The measuring procedure is very common to the one described in the section above(no-load characteristic, short circuit test and measure points under different loads). Hence, the characteristic relations (torque-speed-characteristic, Osanna's circuit and parameters of the equivalent circuit) can be identified.

Synchronous Machine:
A salient pole synchronous machine is operated with an inverter at constant voltage frequency. The focus lies on the measurement and computation of all machine parameters. By this means, the vector diagram can be constructed for different points of operations in all four quadrants.

Finite Element Analyses:
This course provides the student with insight into the computation of magnetic fields with modern Finite-Element programs. By example of a permanent magnet excited DC machine, e.g., the torque, the field distributions, demagnetisations of permanent magnet areas and the cogging torque are computed and discussed.
Criteria for evaluation Written examinations, protocols, preparation and pin-class articipation
Language German
Changing subject? No
Further information none
On-site course
Maximum number of participants 10
Assignment procedure Assignment according to sequence