National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
FEM model and simulation of induction motor with pole-changing winding
Záškodný, Jiří ; Ondrůšek, Čestmír (referee) ; Vítek, Ondřej (advisor)
This master thesis deals with calculations and simulations of multi-speed induction motors. In the first part, basic principle of these machines is described. Next, there are given three examples of pole-changing stator windings and their properties are analyzed (winding factors, magnetomotive force). Main part includes simulations and measuring of the specific motor, which is produced by company Siemens Mohelnice. This is the motor with 2/1 pole-changing in Y/YY connection. First, influence of skewed rotor slots on current and torque is analyzed. Next, parametres of motor from simulations are given and these results are compared to measured values.
Design of synchronous motor for cable way
Záškodný, Jiří ; Huzlík, Rostislav (referee) ; Ondrůšek, Čestmír (advisor)
Subject of this thesis is design of permanent magnet synchronous motor for direct drive of a cableway. The thesis consists of four parts, first part is the literature research, in next part there is a basic theory of synchronous machines with electromagnetic excitation and permanent magnet synchronous machines. Third part is the analytic design of the motor with performance 630 kW and speed 22 min-1. The last part is the comparison of analytic design and simulations in RMxprt and Maxwell 2D.

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